Architect - Database (IMS) Infosys LtdArchitect - Database (IMS)Richardson, TX2248793No5439237910.00.007/28/2026Architect - Database (IMS)In the assigned Job Role of Architecture Consultant 2, your Area Of Responsibility will be as below: Participate in customer discussions to gather and analyze system requirements for performance, security and scalability. Technology Architect - USDomain|Telecom|OSS/BSS Technology|Database|Data Modeling Technology|Data Management - DB|MySQL Technology|Mainframe Technologies|IMS DB.
Java C++ Architect Infosys LtdJava C++ ArchitectRichardson, TXTechnology Architect - USDomain|Telecom|OSS/BSS Technology|Infrastructure-Server Administration|Unix Server administration (HP-UX,IBM-AIX, Sun Solaris, Redhat Linux) Technology|Database|Oracle Database Technology|Database|Informix. 2248794No5439237910.00.007/31/2026Java C++ ArchitectIn the assigned Job Role of Architecture Consultant 2, your Area Of Responsibility will be as below: Participate in customer discussions to gather and analyze system requirements for performance, security and scalability.
Senior Security Engineer, Digital Asset Custody MindlanceSenior Security Engineer, Digital Asset CustodySouthlake, TXof openings: 3. Job Description: We are hiring a Senior Security Engineer, Digital Asset Custody to serve as the technical authority for Crypto Custody engineering, with deep ownership of key management, custody security architecture, and risk posture across Schwab’s digital asset platforms. The Lead Engineer sets technical direction, defines custody architecture, and owns critical design decisions across HSMs, MPC, key storage, policy enforcement, disaster recovery, and incident response.
NewDevops Engineer Tata Consultancy Services LtdDevops EngineerIrving, TX$125,000–$140,000 / yearYou will bring a strong platform engineering mindset, infrastructure-as-code discipline, and a proven track record of reducing toil, improving system resilience, and embedding security into every stage of the software lifecycle in a regulated financial services environment. Enable Developer Productivity Build internal developer platforms (IDP), self-service tooling, golden path templates, and reusable infrastructure components that reduce friction and accelerate engineering teams.
Azure Cloud Engineer Fisher InvestmentsAzure Cloud EngineerPlano, TexasFull timeThe Azure Cloud Engineer will maintain the operational Azure cloud environment, perform infrastructure deployments and ensure the production environment is operating securely and efficiently using automation tools. Manage implementations and ongoing operation of cloud services following approved designs, adherence to patterns, security requirements and certify all logging and monitoring are active for security and compliance.
Senior IAM Engineer eTeam Inc.Senior IAM EngineerPlano, TXConduct threat modeling for the CIAM platform and high-risk application integrations: identify attack surfaces (credential stuffing, token hijacking, redirect URI manipulation, IDP confusion), assess risk, and design compensating controls. " Serve as the IAM subject matter expert in external audits and pen tests: respond to auditor inquiries, coordinate evidence gathering across the team, and negotiate finding severity with assessors based on compensating controls.
Cloud Data Platform Engineer eTeam Inc.Cloud Data Platform EngineerRichardson, TXDeep expertise in Azure/AWS big data & analytics technologies, including Databricks, real time data ingestion, data warehouses, serverless ETL, No SQL databases, DevOps, Kubernetes, virtual machines, web/function apps, monitoring and security tools. Job Responsibilities: Databricks Subject Matter Expert (SME) plays a pivotal role in admin, security best practices, platform sustain support, new tools adoption, cost optimization, supporting new patterns/design solutions using the Databricks platform.
NewDevOps Engineer BOULEVARD INTERACTIVE LLCDevOps EngineerPlano, TXFull timeExperience with AEM Managed Services & AEM as a Cloud Service: Familiarity with Adobe Experience Manager (AEM), particularly in cloud environments, including AEM Managed Services and AEM as a Cloud Service. AEM Managed Services & AEM as a Cloud Service: Support the management and optimization of AEM Managed Services and AEM as a Cloud Service, ensuring optimal performance and scalability.
Platform Engineer Upbound Field Support Center Rent A Center Texas LPPlatform EngineerPlano, TexasThe Company’s customer-facing operating units include industry-leading brands such as Acima, Rent-A-Center, and Brigit that facilitate consumer transactions across a wide range of store-based and digital retail channels, including over 2,400 company branded retail units across the United States, Mexico and Puerto Rico. Upbound Group, Inc. (effective February 27, 2023: NASDAQ: UPBD) is an omni-channel platform company committed to elevating financial opportunity for all through innovative, inclusive, and technology-driven financial solutions that address the evolving needs and aspirations of consumers.
Elasticsearch Lead Engineer - SIEM Platform Vanguard GroupElasticsearch Lead Engineer - SIEM PlatformPlano, TXElasticsearch Lead Engineer - SIEM Platform: Architect and maintain high-availability Elasticsearch clusters supporting large-scale security event ingestion. Our crew are our greatest resource - by joining our team you will build collaborative long-term relationships and enjoy a suite of benefits that includes comprehensive health and wellness care, work-life balance, and an investment in your future at its core.
DNS Engineer - SRE Optimum Communications IncDNS Engineer - SREPlano, TX$83,538–$137,241 / yearProtocol Expertise: Mastery of DNS-specific protocols including DNSSEC, DoT, and DoH, with a firm grasp of underlying transport layers (UDP/TCP) and dual-stack (IPv4/IPv6) networking. You will combine deep IP networking and DNS expertise with modern security protocols to ensure our platforms remain resilient against evolving threats and perform at the highest level for millions of users.
Infrastructure Engineer TechDigitalInfrastructure EngineerDallas, TXStrong hands-on expertise across compute, storage, networking, hosting services, security, and cloud platforms, with the ability to contribute to infrastructure improvements, maintain operational stability, and support scalable and secure IT services. Provide support and technical coordination for Relational, NoSQL, and Big Data platforms, including: Oracle, SQL Server, PostgreSQL.
Network Engineer HF Sinclair CorpNetwork EngineerDallas, TXThis role serves as a subject matter expert for complex network technologies, provides technical leadership for large initiatives, and partners closely with infrastructure, security, cloud, and application teams to deliver resilient, scalable, and secure connectivity solutions that support evolving business needs. HF Sinclair owns and operates refineries located in Kansas, Oklahoma, New Mexico, Wyoming, Washington and Utah and markets its refined products principally in the Southwest U.S., the Rocky Mountains extending into the Pacific Northwest and in other neighboring Plains states.
Cyber Security Presales Solutions Architect Cognizant Technology Solutions CorpCyber Security Presales Solutions ArchitectDallas, TXBy clicking "Accept All", you agree to the storing of cookies on your device to give you the most optimal experience using our website. We may also use cookies to enhance performance, analyse site usage and to personalise your experience.
NewStaff Azure Cloud Engineer, Automation HCVTStaff Azure Cloud Engineer, AutomationFort Worth, TXAs the Staff Azure Cloud Engineer, you will be responsible for, but not limited to, the following: Design and build the Azure landing zone , aligned to Microsoft's Cloud Adoption Framework design areas (identity, network topology, resource organization, governance, management, security) and reviewed against the Well-Architected Framework's five pillars at each milestone. A well-rounded Azure Cloud generalist, comfortable across Terraform/IaC, Azure networking, and firewalls/network security, Deep, hands-on Terraform experience: module authorship, remote state, workspace/environment strategy, version pinning, and awareness of the tradeoffs in monorepo vs.
Application Security Engineer-68257 Hitachi LtdApplication Security Engineer-68257Dallas, TXApplication Security • DevSecOps • Secure SDLC • OWASP Top 10 • OWASP API Security Top 10 • AI Security • Secure Code Review • Threat Modeling • SAST • DAST • SCA • CI/CD Security • Container Security • Kubernetes Security • Cloud Security (Azure/AWS) • Vulnerability Management • Security Automation. Focus Areas: Application Security, DevSecOps, AI Security, Secure SDLC, CI/CD Security, Vulnerability Management, Container & Kubernetes Security, Cloud Security (Azure/AWS).
Lead Architect Zones, Inc.Lead ArchitectDallas, TXRemoteOperating in more than 120 countries, leveraging a robust portfolio, and utilizing the highest certification levels from key partners, including Microsoft, Apple, Cisco, Lenovo, Adobe, and more, Zones has mastered the science of building digital infrastructures that change the way business does business ensuring whatever they need, they can Consider IT Done. Positioned to be the IT partner you need, Zones, a Minority Business Enterprise (MBE) in business for over 35 years, specializes in Digital Workplace, Cloud & Data Center, Networking, Security, and Managed/Professional/Staffing services.
Senior Security Engineer NRG Energy IncSenior Security EngineerTXThe Security Engineer acts as a critical partner across Architecture, Engineering, Cloud, Cyber Security, and Data & AI to ensure that every platform, agent, automation, and application is designed with the right guardrails, governance, controls, and operational readiness to keep the business safe while accelerating transformation. The Security Engineer is a strategic, architecture-focused role responsible for defining, governing, and advancing security across our modern platforms, cloud ecosystems, AI and agent-driven capabilities, integrations, and digital experiences.
Cybersecurity Mid Market Sales Engineer Accenture PlcCybersecurity Mid Market Sales EngineerIrving, TXOur engineers, architects, and security specialists work at global scale-building and running modern cloud‑native platforms, zero‑trust architectures, and advanced detection and response systems that protect some of the world's most complex organizations. You will partner with mid-market companies to shape solutions leveraging Accenture's Midmarket offerings to address their most critical security risks, Your role is to bridge the gap between business needs and technical possibilities.
Lead Fire Protection Engineer – Facility Design OlssonLead Fire Protection Engineer – Facility DesignDallas, KansasJoin Olsson’s South Facilities Engineering and Design team as a Senior Fire Protection Engineer, where you’ll take the lead on complex, mission-critical projects, including hyperscale data centers and secure facilities. Pursuant to the California Consumer Privacy Act, as amended by the California Privacy Rights Act (collectively, the “CCPA”), this notice explains Olsson’s practices regarding the collection, use, and disclosure of personal information for job applicants residing in California.
Senior Fire Protection Engineer - Data Center OlssonSenior Fire Protection Engineer - Data CenterPlano, TXJoin Olsson's Data Center Design team as a remote Senior Fire Protection Engineer, where you'll take the lead on complex, mission-critical projects, including hyperscale data centers and secure facilities. Pursuant to the California Consumer Privacy Act, as amended by the California Privacy Rights Act (collectively, the "CCPA"), this notice explains Olsson's practices regarding the collection, use, and disclosure of personal information for job applicants residing in California.
Lead Electrical Engineer (Mission Critical/Data Center) WSP Global IncLead Electrical Engineer (Mission Critical/Data Center)Dallas, TXYour Impact Produce high quality technical and professional deliverables for projects and proposals Apply deep knowledge of engineering techniques across multiple technical functions Utilize advanced analytical and design techniques to solve technical problems Exemplify well-developed advanced experience in electrical discipline Lead the development of initial electrical system concepts Develop work plans to address technical issues within project time and budget Work within multi-discipline project teams to develop drawing and specification documents for issuance to architects, contractors and building owners Collaborate and coordinate with internal project discipline team members, equipment vendors and manufacturers Perform project management activities including writing proposals, establishing budgets, and managing client interactions Design complex and large electrical medium voltage and low voltage distribution systems and electrical building systems (i.e. general power, lighting, grounding, etc.) Survey and evaluation of existing conditions Perform construction administration Develop and maintain client relationships Proven track record of upholding workplace safety and ability to abide by WSP''s health, safety and drug/alcohol and harassment policies Who You Are The ideal candidate has familiarity with Building Information Modeling using Revit, has strong communication skills, and an interest in liaising with internal and external design, client and construction team members. Our mechanical, electrical, plumbing, fire protection, controls, telecommunications, and security building system designs keep many of the world's top Fortune 100 financial, technology, enterprise, hyperscale, and colocation companies up and running 24 hours a day, 365 days a year.
AI Solutions Architect, SLED focused for North America NTT DATA Services, LLCAI Solutions Architect, SLED focused for North AmericaPlano, TXRemote$119,578–$221,625 / yearThis is a high-impact role responsible for driving growth, developing differentiated offerings, and guiding strategic programs to build AI-native solutions across state and local government departments including health, human and social services, IT and law enforcement as well as education systems including K-12 and higher education. NTT DATA recruiters will never ask for payment or banking information and will only use @nttdata.com and @talent.nttdataservices.com email addresses.
Lead Mechanical Engineer (Mission Critical/Data Centers) WSP Global IncLead Mechanical Engineer (Mission Critical/Data Centers)Dallas, TXOur mechanical, electrical, plumbing, fire protection, controls, telecommunications, and security building system designs keep many of the worlds top Fortune 100 financial, technology, enterprise, hyperscale, and colocation companies up and running 24 hours a day, 365 days a year. As a Lead Mechanical Engineer with us, you will design complex cooling and HVAC systems, including air distribution systems, chiller plants, and alternative energy solutions while leading projects and a team of mechanical engineers.
Assistant Vice President, Mechanical Engineer (Mission Critical/Data Centers) WSP Global IncAssistant Vice President, Mechanical Engineer (Mission Critical/Data Centers)Dallas, TXOur mechanical, electrical, plumbing, fire protection, controls, telecommunications, and security building system designs keep many of the worlds top Fortune 100 financial, technology, enterprise, hyperscale, and colocation companies up and running 24 hours a day, 365 days a year. As an Assistant Vice President, Mechanical Engineer with us, you will design complex cooling and HVAC systems including air distribution systems, chiller plants, and alternative energy solutions while leading projects and a team of mechanical engineers.
Lead Fire Protection Engineer - Facility Design Olsson AssociatesLead Fire Protection Engineer - Facility DesignFort Worth, TXJoin Olsson's South Facilities Engineering and Design team as a Senior Fire Protection Engineer, where you'll take the lead on complex, mission-critical projects, including hyperscale data centers and secure facilities. Pursuant to the California Consumer Privacy Act, as amended by the California Privacy Rights Act (collectively, the "CCPA"), this notice explains Olsson's practices regarding the collection, use, and disclosure of personal information for job applicants residing in California.
Principal Software Engineer The Depository Trust & Clearing CorpPrincipal Software EngineerDallas, TXIndustry owned and governed, the firm innovates purposefully, simplifying the complexities of clearing, settlement, asset servicing, transaction processing, trade reporting and data services across asset classes, bringing enhanced resilience and soundness to existing financial markets while advancing the digital asset ecosystem. This role will be responsible for driving strategic HR technology initiatives, defining solution architecture, establishing best practices, supporting modernization efforts, and ensuring the platform remains scalable, secure, compliant, and aligned with business objectives.
Senior Network Security Engineer 2Bridge PartnersSenior Network Security EngineerDallas, TexasRemote$150,000–$180,000 / yearThe Network Security Engineer will help identify, research and evaluate security solutions and emerging technologies that align with the company’s strategic direction. Hybrid schedule with potential for fully remote if the hired candidate doesn't live within a reasonable commute of the data center.
Zscaler Network Security Engineer SciataZscaler Network Security EngineerPlano, TX$50–$60 / hourConduct performance optimization by diagnosing latency issues using ZDX (Digital Experience) or Zscaler Cloud Performance Test tools and accurately identifying if latency is introduced by the Service Edge, ISP, or local network. Job Title: Zscaler Network Security Engineer MUST have Zscaler experience - Required - manage and operate Zero Trust security infrastructure, with a strong focus on Zscaler technologies (ZIA, ZPA, and ZDX).
Enterprise AI Solutions Engineer Alvarez & Marsal Holdings LLCEnterprise AI Solutions EngineerDallas, TX$200,000–$225,000 / yearIn this role, the successful candidate will design, build, and implement intelligent technology solutions that help organizations move faster, eliminate manual work, and drive measurably better business outcomes. Hands-on experience building AI-powered applications, including LLM integrations, RAG architectures, vector databases, embeddings, and modern AI frameworks and SDKs.
Staff Software Development Engineer, Web WEX IncStaff Software Development Engineer, WebDallas, TX$140,600–$173,100 / yearAs a Staff Software Engineer, you'll build the backend services and APIs that power these experiences, ensuring they are secure, scalable, highly available, and capable of supporting a growing user base while delivering a reliable and seamless experience for drivers on the road. The mobile application enables truck drivers to discover participating fuel locations, activate discounts, manage payment methods, view transaction history, and access real-time fuel pricing and savings.
Senior Backend Engineer - AI Platform WEX Inc.Senior Backend Engineer - AI PlatformDallas, TXRemote$121,500–$145,500 / yearWe provide fleet managers and operators with advanced spend orchestration capabilities, encompassing fuel discounts and sophisticated spend controls that permit precise configuration of merchant restrictions, transaction limits, and velocity thresholds to optimize operational efficiency. Within the NAM Mobility ecosystem, our products facilitate strategic credit issuance to fleet organizations and their workforce through WEX-branded or co-branded credit instruments, accepted across a vast network of fueling stations and merchant partners.
Staff Software Engineer, Backend & Apis WEX Inc.Staff Software Engineer, Backend & ApisDallas, TX$140,600–$173,100 / yearAs a Staff Software Engineer, you'll build the backend services and APIs that power these experiences, ensuring they are secure, scalable, highly available, and capable of supporting a growing user base while delivering a reliable and seamless experience for drivers on the road. The mobile application enables truck drivers to discover participating fuel locations, activate discounts, manage payment methods, view transaction history, and access real-time fuel pricing and savings.
Sr. Principal Engineer TCC Toyota Motor Credit Corporation CompanySr. Principal EngineerPlano, TexasProven track record of delivering scalable cloud native solutions addressing cross cutting concerns like logging, application testing and application security and instrumentation by utilizing programming languages like Java, Python, SQL, and a variety of AWS tools and services. A passion for staying on top of tech trends, experimenting with and learning new technologies, participating in internal & external technology communities, mentoring other members of the engineering community, and from time to time, be asked to code or evaluate code.
Lead Software Engineer, Full Stack Capital One Financial CorpLead Software Engineer, Full StackPlano, TX$179,400–$204,700 / yearWe currently manage a large Cloudera-based stack (HBase, Kafka, NiFi) hosted on AWS EC2 and over the next 24 months, we are migrating this entire infrastructure to a modern, AWS-native serverless/managed architecture stack. Candidates hired to work in other locations will be subject to the pay range associated with that location, and the actual annualized salary amount offered to any candidate at the time of hire will be reflected solely in the candidate's offer letter.
Principal AI Engineer - AI Transformation Fifth Third BankPrincipal AI Engineer - AI TransformationFrisco, TXGENERAL FUNCTION: The Principal AI Engineer architects and implements artificial intelligence and machine learning systems that address diverse business challenges throughout the Bank, with a strong focus on research and experimentation of generative AI models and agentic systems. The AI Engineer creates solutions that range from on-demand analytics to fully integrated software systems, working closely with cross-functional teams to align technical solutions with business requirements.
Distinguished Software Engineer - Identity Capital One Financial CorpDistinguished Software Engineer - IdentityPlano, TX$269,100–$307,200 / yearWe are looking for a visionary architect to build an intelligent, self-sufficient platform that evaluates real-time context-integrating endpoint risk, network signals, and behavioral heuristics-to grant the right access, to the right resources, at the exact moment it's needed. You will operate as a trusted advisor for our key technologies, platforms and capability domains, creating clear and concise communications, code samples, blog posts and other material to share knowledge both inside and outside the organization.
Systems Engineer II – Infrastructure 2 (Onsite) RaytheonSystems Engineer II – Infrastructure 2 (Onsite)Richardson, TXYou will gain invaluable experience collaborating with our systems engineering experts, security and crypto certification specialists, customer base, and SAOC engineering team, learning exactly what it takes to deliver a security hardenedproductwhile employing next-generation systems engineering tools andprocesses. YOU willparticipatein the systems development lifecycle ,developing typical systems artifacts that includetradestudies, system design, requirements definition, requirements allocation, requirement traceability,ICD creation,systems integration, verificationtestingand qualification.
Distinguished Engineer Elevance Health IncDistinguished EngineerGrand Prairie, TX$243,012–$364,518 / yearPreferred Skills, Experiences and Competencies: Strong expertise in healthcare technology ecosystems, cloud platforms (AWS, Azure, GCP), AI at Scale, full-stack software engineering, and the design of secure, scalable, cloud-native architectures. Minimum Requirements: Requires a Bachelor's degree in Computer Science, Information Technology, or related field and a minimum of 15 years of experience in software engineering, deep expertise in distributed systems and large-scale architecture, or any combination of education and experience, which would provide an equivalent background.
R&D SW Engineer Broadcom IncR&D SW EngineerPlano, TXBroadcom's Mainframe Software Division (MSD) is the industry leader in mainframe operations software, serving the data center monitoring needs of Fortune 500 financial institutions, government agencies, and global enterprises. As a valued member of our team, you'll be eligible for a discretionary annual bonus and the opportunity to receive not only a competitive new hire equity grant, but also annual equity awards, connecting your success directly to the company's growth.
Staff Engineer Vizient IncStaff EngineerIrving, TX$156,998–$200,000 / year18) Ensure security, reliability, and scalability of applications, and proactively identify vulnerabilities, assess risks, and implement security best practices such as encryption, authentication, and access control mechanisms. 17) Collaborate with cross-functional teams to provide strategic input on feature feasibility, impact assessment, and prioritization, ensuring that engineering efforts contribute directly to business success.
Electrical Engineer Gray IncElectrical EngineerCoppell, TXGray is a family-owned, fully integrated global service provider specializing in engineering, design, construction, digital, equipment manufacturing, and real estate services. Deeply rooted in EAC services, Gray serves both domestic and international customers across our core markets: Food & Beverage, Manufacturing, Automotive, Distribution, Mission Critical, and Commercial.
Principal Genai Data Engineer Zscaler, Inc.Principal Genai Data EngineerDallas, TXRemote$182,000–$260,000 / yearThe range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position across all US locations and could be higher or lower based on a multitude of factors, including job-related skills, experience, and relevant education or training. Zscaler is committed to providing reasonable support (called accommodations or adjustments) in our recruiting processes for candidates who are differently abled, have long term conditions, mental health conditions or sincerely held religious beliefs, or who are neurodivergent or require pregnancy-related support.
R&D SW Engineer Broadcom CorporationR&D SW EngineerPlano, TXBroadcom's Mainframe Software Division (MSD) is the industry leader in mainframe operations software, serving the data center monitoring needs of Fortune 500 financial institutions, government agencies, and global enterprises. As a valued member of our team, you'll be eligible for a discretionary annual bonus and the opportunity to receive not only a competitive new hire equity grant, but also annual equity awards, connecting your success directly to the company's growth.
Principal Cloud Engineer Azure BMO (Bank of Montreal)Principal Cloud Engineer AzureVirtual, TX$112,200–$209,000 / yearDeep and broad general IT engineering knowledge as well as hands-on experience in different areas such as networking, infrastructure, security, solutions architecture and design, OS (Linux/Windows), common protocols and services, identity and access management, automation, troubleshooting, etc. architect-level expertise in Policy as Code (PaC) strategy and implementation; expertise with design, implementation and running container infrastructure; expertise with design of operational processes for large scale Azure environments.
Principal Engineer - Cloud Observability Wells Fargo & CoPrincipal Engineer - Cloud ObservabilityIrving, TX$159,000–$305,000 / yearThey are accountable for execution of all applicable risk programs (Credit, Market, Financial Crimes, Operational, Regulatory Compliance), which includes effectively following and adhering to applicable Wells Fargo policies and procedures, appropriately fulfilling risk and compliance obligations, timely and effective escalation and remediation of issues, and making sound risk decisions. Translate advanced technology experience, an in-depth knowledge of the organizations tactical and strategic business objectives, the enterprise technological environment, the organization structure, and strategic technological opportunities and requirements into technical engineering solutions.
NewSoftware Engineer Groundworks LLCSoftware EngineerIrving, TX$100,000–$125,000 / yearIn this senior individual-contributor role, you will lead the design and delivery of scalable, cloud-based applications and integrations, applying strong software engineering practices and modern DevOps principles. The Software Engineer designs, builds, and optimizes software systems, APIs, and websites that power critical business operations across the organization.
Senior Platform Engineer Abode Techzone LLCSenior Platform EngineerIrving, TXDesign, deploy, administer, and optimize large-scale Apache Druid clusters supporting PB-scale datasets. Troubleshoot ingestion failures, stuck tasks, compaction issues, retention policies, and segment management problems.
Sr. Platform Engineer with Druid Abode Techzone LLCSr. Platform Engineer with DruidIrving, TXDesign, deploy, administer, and optimize large-scale Apache Druid clusters supporting PB-scale datasets. Troubleshoot ingestion failures, stuck tasks, compaction issues, retention policies, and segment management problems.
Sr. Engineer- Druid Abode Techzone LLCSr. Engineer- DruidIrving, TXRemoteDesign, deploy, administer, and optimize large-scale Apache Druid clusters supporting PB-scale datasets. Troubleshoot ingestion failures, stuck tasks, compaction issues, retention policies, and segment management problems.