UNKNOWN

FEED

In addition to developing software, candidates will be expected to develop strong and collaborative internal relationships for the purpose of aligning the company’s products and services with customers’ needs; assist in establishing the strategy and roadmap for the scalability and performance of the internal systems to keep pace with company growth; prioritize and effectively manage multiple assignments; monitor industry trends and technologies and implements best practices to improve in-house capabilities; and collaborate with IT peers to ensure appropriate delivery of software products. SQL, and Python, experience working with modern backend web technologies (real time APIs, HTTP, JSON, Web Sockets), experience using AI development tools (ClaudeCode, CoPilot for git), familiarity with Unix environment including writing shell scripts, executing and scheduling job, and familiarity with Relational Databases (MS SQLServer, PostgreSQL, Azure SQL, or Oracle) are required for this position.

Helping Communities Thrive

Full Stack Developer

While performing the duties of this job, the employee is occasionally required to stand; walk; sit; use hands to handle, or feel objects; reach with hands and arms; climb stairs; balance; stoop or kneel; talk and hear. At CoreSite, we're not just building state-of-the-art infrastructure-we're creating a community of forward-thinkers committed to solving complex challenges and delivering exceptional customer experiences.

YEAR

CoreSite Realty Corp

Salesforce Developer

HOUR

We're a veteran-owned IT staffing firm, ISO 9001 and ISO 27001 certified , working with federal agencies, state governments, and Fortune 500 enterprise clients across the US. You will collaborate with cross-functional teams to deliver high-quality software solutions that align with business needs.

<p>&nbsp;Is a leading Service Disabled Veteran Owned Small Business providing IT, Telecom and Medical Staffing.</p>

HonorVet Technologies

.Net Developer

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Working from requirements framed by our IT Business Systems team, you will deliver working, supportable solutions: custom applications, workflow and process automations, system integrations, and data pipelines across our ERP, engineering, and business platforms. Take on occasional smaller builds such as Model Context Protocol (MCP) servers that connect Areté's internal systems and tools to AI agents and assistants, including the authentication, access scoping, and logging those connections require.

Arete Associates

Staff Business Apps Developer

Bachelor's degree in Computer Science, Software Engineering, Information Technology, Information Systems, Web Development, Data Science, or a related technical field; or equivalent practical experience developing, maintaining, or supporting web applications, SharePoint solutions, Power Platform solutions, or related business systems. Note to staffing and direct hire agencies: In the event a recruiter or agency who is not on our preferred supplier list submits a resume/candidate to anyone in the company, AtkinsRéalis family of companies, we explicitly reserve the right to recruit and hire the candidate(s) at our discretion and without any financial obligation to the recruiter or agency.

AtkinsRealis Group Inc

Web Application Developer

This role requires strong technical expertise in Oracle Forms, Reports, PL/SQL, Workflows, and integration components, along with a good understanding of the functional aspects of Oracle ERP modules. Allegion is proud to be a recipient of the Gallup Exceptional Workplace Award for the second year in a row, recognizing our commitment to employee engagement, strengths-based development, and unlocking human potential.

Allegion Plc

Senior Oracle ERP Developer

They will have a proven track record of leading and delivering high-quality software solutions, mentoring junior developers, and driving continuous improvement in software development processes. Furthermore, you will independently design and implement software solutions, perform debugging and testing, and mentor junior developers by providing technical leadership and expertise.

Sierra Space

Sap/Btp Applications Developer III

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In addition, certain positions may also be subject to the requirements of FINRA, NMLS registration, Reg Z, Reg G, OFAC, the NFA, the FCPA, the Bank Secrecy Act, the SAFE Act, and/or federal guidelines applicable to an agreement, such as those related to ethics, safety, or operational procedures. Monitor operating efficiency and organizational needs of existing application systems and identify opportunities to fine-tune and optimize applications of developed projects and recommend technical solutions.

U.S. Bancorp

Application Developer

Strong understanding of Linux networking routing tables, metrics, netfilter, bridge interfaces, IPv4 and IPv6 dual-stack, neighbor discovery, DHCPv4/DHCPv6, SLAAC, and prefix delegation. You'll be developing and maintaining firmware on OpenWrt-based hardware running the OpenSync framework, with direct impact on millions of deployed customer premises equipment (CPE).

<p>Since 1996, RJT has provided successful SAP, Oracle, and IT consulting solutions and staffing services to clients around the world. The new Apolis brings you the same personalized service fortified with a greater array of IT solutions, global expertise, and cost-management strategies.</p>
<p>We are a global IT consultancy that seamlessly integrates experts and leading-edge solutions into your organization so you can focus on what really matters.</p>
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Apolis

Embedded C Developer

unique selling points - Strong - Hands-on experience developing OpenSync-based OpenWrt gateway firmware with LTE/5G cellular failover, combining deep Embedded C expertise, Linux networking, and cloud-managed CPE platforms. • Strong understanding of Linux networking — routing tables, metrics, netfilter, bridge interfaces, IPv4 and IPv6 dual-stack, neighbor discovery, DHCPv4/DHCPv6, SLAAC, and prefix delegation.

TechDigital Corporation

Embedded C Developer OpenSync/OpenWrt WiFi Router with Cellular Backup

The pay range for the states of California, Colorado, Hawaii, Illinois, Maine, Maryland, Massachusetts, Minnesota, New Jersey, New York, Vermont, Virginia, Washington, and the District of Columbia, and the city of Cleveland is: $98,100—$105,500 USD What We Believe As a company wholly dedicated to serving the US federal government, we bring together the best talent to help reinvent how federal agencies operate and deliver greater value for their mission and the American people. As required by local law, Accenture Federal Services provides reasonable ranges of compensation for hired roles based on labor costs in the states of California, Colorado, Hawaii, Illinois, Maine, Maryland, Massachusetts, Minnesota, New Jersey, New York, Vermont, Virginia, Washington, and the District of Columbia, and the city of Cleveland .

Accenture Federal Services

Java Developer

GreenHouseAPI

FULL_TIME

OTHER

Maximus compensation is based on various factors including but not limited to job location, a candidate's education, training, experience, expected quality and quantity of work, required travel (if any), external market and internal value analysis including seniority and merit systems, as well as internal pay alignment. If you require assistance at any stage of the employment process-including accessing job postings, completing assessments, or participating in interviews,-please contact People Operations at applicantaccom@maximus.com .

MAXIMUS provides business services to help governments operate health and human services programs, mostly at the state and national levels. The company's health services segment offers outsourced program management and administrative services,

Maximus

Lead Appian Developer

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As SNC''s corporate team, we provide the company and its business areas with strategic direction and business support spanning executive management, finance and accounting, operations, human resources, legal, IT, information security, facilities, marketing, and communications. Work collaboratively with cross-functional teams, including QA, operations, and security, to ensure the seamless integration and functionality of business applications within the aerospace and defense context.

<p>Sierra Nevada Corporation (SNC) is a world-class prime systems integrator and electronic systems provider known for its rapid, innovative, and agile technology solutions.  Fast-growing and widely diversified, SNC is a high-tech electronics, engineering, and manufacturing corporation that continues to expand its impressive portfolio of capabilities, programs, products and services.</p>  <p>SNC is a privately held company under the leadership of CEO, Fatih Ozmen, and President and CFO, Eren Ozmen. Over the last 30 years under the Ozmen’s leadership, SNC has remained focused on providing its customers the very best in diversified technologies to meet their needs and has a strong and proven track record of success. Headquartered in Sparks, Nevada, SNC is the Top Woman Owned Federal Contractor in the United States.</p><p>Since SNC was founded in 1963, its strong tradition has been to develop and provide high technology Electronics, Avionics, and Communications systems.  Investing heavily over the years in people, processes, modern facilities, and the state-of-the-art equipment, SNC continues to enhance our technical advantage to provide innovative and cost-effective solutions to our customer’s requirements.  With numerous successful and diverse acquisitions, SNC continues to acquire new capabilities as we expand our tradition of excellence into the areas of Renewable Energy, Telemedicine, Nanotechnology, Cyber, Net-Centric Operations, Microsatellites and Human Space Flight.</p>  <p>SNC employs an extremely talented workforce of over 2100 people most of whom are scientists, engineers, or technical personnel with college or advanced degrees, and all of whom are dedicated to satisfying our customers' needs. Our 7 different Business Areas operate from 31 locations in 16 states along with numerous customer support sites located throughout the world.  Please take a look around our website as it provides much more information about SNC to include a detailed de ion of each Business Area and their respective capabilities, programs, products, and services.</p> 

Sierra Nevada Corp

Business Applications Developer III

This role is ideal for someone who is comfortable working across the Java/Spring ecosystem, building REST APIs, integrating with AWS services, and contributing to modern CI/CD-driven development workflows. Ideal Candidate The ideal candidate is a strong Java developer who can move comfortably between backend development, lightweight front-end work, cloud-based deployments, and CI/CD workflows.

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<div>With over 15 years of experience servicing Fortune 500 customers across the globe, Generis Tek is consistently regarded as a pioneer in the IT and Professional Staffing and Services Industry. Finding the right talent for the job is a tough task, but it’s one we do especially well.</div>
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<div>Generís Tek offers wide scope of services from strategizing to implementing that addresses these unique workforce challenges. Our professionals quickly adapt to clients work culture and become a core part of their team. We hire professionals as well as fresh grads from various disciplines to meet our client’s demands. Our focus is to create and manage a seamless stream of resources for a diverse, global, and effective talent pool. Working closely with our clients has enabled them to achieve their strategic objectives, leverage technological innovation and be cost effective.</div>
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<div>We are driven by <strong>three core principles</strong> in changing Staff Augmentation for the better: cost, quality, and responsiveness. </div>
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Generis Tek Inc.

Implement and debug WiFi features including band steering, client steering, channel selection (Client/non-Client), BSS Coloring, OFDMA, MU-MIMO, TWT, and MLO (WiFi 7). Prior experience working with networking devices such as wifi routers, cable modems, CMTS etc.

Jr. Embedded Developer

Sr. Embedded Developer

If you're passionate about integration, APIs, AI, and solving complex business challenges, you'll have opportunities to work with leading clients, collaborate with experienced practitioners, develop in-demand skills, and help shape the future of enterprise connectivity. You collaborate effectively with architects, senior developers, analysts, client stakeholders, and distributed delivery teams, and you take pride in producing quality work on schedule.

Accenture Plc

Mulesoft Developer

The consultant will work closely with Product Owners, Architects, Scrum teams, and Feature Leads while contributing throughout the SDLC, from requirements refinement through deployment and support. The role focuses on designing, developing, and testing scalable solutions using Java, Spring Boot, Kafka, and graph database technologies.

Senior-level Java Developer

The ideal candidate is responsible for developing and optimizing telecom network inventory solutions, integrating OSS/BSS systems, and supporting real-time data architectures using Kafka, REST APIs, and semantic web technologies. Graph Data Engineer / SPARQL Developer Responsibilities include: Design, develop, and optimize SPARQL queries and semantic data models using RDF, OWL, and Semantic Web technologies.

Akkodis Group AG.

Graph Data Engineer / SPARQL Developer

As part of this commitment, our agency will assist individuals who have a disability with any reasonable accommodation requests related to employment, including completing the application process, interviewing, completing any pre-employment testing, participating in the employee selection process, and/or to perform essential job functions where the requested accommodation does not impose an undue hardship. Under general supervision, the Full Stack Developer oversees and supports the Colorado GEAR UP database, scholarship databases, student portfolio, and websites and is also responsible for data collection, data storage and reporting.

Systems Software Developer Jobs in Denver, CO

Full Stack Developer Helping Communities Thrive

Salesforce Developer CoreSite Realty Corp

.Net Developer HonorVet Technologies

Staff Business Apps Developer Arete Associates

Web Application Developer AtkinsRealis Group Inc

Senior Oracle ERP Developer Allegion Plc

Sap/Btp Applications Developer III Sierra Space

Application Developer U.S. Bancorp

Embedded C Developer Apolis

Embedded C Developer OpenSync/OpenWrt WiFi Router with Cellular Backup TechDigital Corporation

Java Developer Accenture Federal Services

Lead Appian Developer Maximus

Business Applications Developer III Sierra Nevada Corp

Java Developer Generis Tek Inc.

Jr. Embedded Developer Apolis

Sr. Embedded Developer Apolis

Mulesoft Developer Accenture Plc

Senior-level Java Developer Apolis

Graph Data Engineer / SPARQL Developer Akkodis Group AG.

Full Stack Developer (GEARUP) State of Colorado

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