Full‑stack engineer with strong Python or Java for Voice Infrastructure at Jersey City, NJ

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Location: Jersey City, NJ.

Duration: 6 months

Role: Full stack engineer with strong Python or Java experience for Voice Infrastructure

Exp: 4- 6 years in required skills

Skills: Skills: Digital : Amazon Web Service(AWS) Cloud Computing, Digital : DevOps Continuous Integration and Continuous Delivery (CI/CD), MySQL, EIS : Network Engineer

Role Descriptions:

Position Summary

We are looking for a full stack engineer with strong Python or Java experience to help modernize our backbone voice infrastructure. The resource will design and build cloud native services and tooling on AWS, run workloads on Kubernetes, and implement Infrastructure as Code and Configuration as Code with Terraform and GitOps. This work will enable resilient, observable, and secure voice services at scale, partnering closely with voice and/or network engineering teams.

Scope of Work to Be Performed

Design, build, and maintain microservices and APIs in Python or Java to support provisioning, routing, monitoring, and control-plane functions for backbone voice services.

Develop web UIs and dashboards (e.g., React or Angular with TypeScript) for self service configuration, operations, and observability.

Containerize and operate services on Kubernetes (preferably EKS), including Helm charts and/or Kustomize, autoscaling, RBAC, and workload security.

Implement Infrastructure as Code using Terraform (modular patterns) for AWS networking, EKS, IAM, compute, storage, and observability stacks.

Adopt Configuration as Code and GitOps for Kubernetes (e.g., Helm, Kustomize, Argo CD/Flux) to enable versioned, auditable rollouts of services and network configurations.

Build event-driven and streaming integrations (e.g., Kafka and/or SQS) to capture call events, metrics, and operational signals for real time insights.

Partner with voice and network engineers to integrate with SIP and/or SBCs, PBX and/or call recording, and voice QoS (jitter, packet loss, MOS), implementing secure signaling and/or media (TLS and/or SRTP).

Establish CI and/or CD pipelines (e.g., GitHub Actions, Jenkins, GitLab CI), automated testing (e.g., unit, integration, contract, and/or load), and security scanning.

Implement end to end observability, including but not limited to:

o Metrics,

o Logs,

o Tracing (e.g., Prometheus, Grafana, and/or OpenTelemetry),

o SLOs and/or SLIs, and/or

o Actionable alerting.

Embed security best practices, including but not limited to:

o IAM least privilege,

o Secret management,

o mTLS,

o Network segmentation,

o Audit trails, and/or

o Compliance-by-design.

Contribute to SRE practices, including but not limited to:

o Incident response,

o Root-cause analysis,

o Capacity planning,

o Service hardening, and/or

o On call participation.

Required Skills

General Abilities

Excellent collaboration and communication skills working across software, network, and operations teams

At least five (5) years of software engineering experience building and operating production systems

Proven experience on AWS, including but not limited to:

o VPC,

o EKS,

o EC2,

o ALB and/or NLB,

o IAM,

o S3,

o RDS and/or DynamoDB, and/or

o CloudWatch

Solid experience on one or more of the following:

o Linux systems,

o Shell scripting,

o Git and/or GitHub, and

o CI and/or CD toolchains

General Technical Skills

Strong understanding of networking fundamentals, including but not limited to:

o TCP/IP,

o DNS,

o TLS,

o HTTP,

o Load balancing, and/or

o NAT

Solid front end skills with modern frameworks (React or Angular) and TypeScript

Solid front end skills in component testing

Experience with relational and/or NoSQL databases, including but not limited to:

o PostgreSQL,

o MySQL, and/or

o DynamoDB

Experience with relational and/or NoSQL database messaging (e.g., Kafka and/or SQS)

Terraform expertise for IaC, including but not limited to:

o Reusable modules,

o Workspaces,

o Policy as code, and/or

o Pipelines

Specific Technical Skills

Strong proficiency along with clean coding practices, testing discipline, and performance awareness in [either/one or both] of the following:

o Python:

FastAPI, Flask, and/or Django

pytest

o Java (Spring Boot, JUnit)

Hands on experience with Kubernetes in production, including but not limited to:

o Deployments,

o Networking,

o Security,

o Scaling, and/or

o Helm and/or Kustomize

Desired Skills

Experience in any of the following:

o Voice and/or real time communications domain, including but not limited to:

SIP,

RTP and/or SRTP,

SBCs,

SIP trunking, and/or

Call routing

o Tools like SIPp

o Platforms such as Kamailio and/or Asterisk or vendor ecosystems, including but not limited to:

Cisco,

Avaya, and/or

Genesys

o GitOps (Argo CD and/or Flux), service mesh (Istio and/or Linkerd), and policy engines (OPA and/or Gatekeeper)

o Terragrunt or Terraform Cloud and/or Enterprise, sentinel and/or policy as code, and private module registries

o Advanced observability (e.g., RED and/or USE, synthetic tests) and resilience patterns, including but not limited to:

Circuit breakers,

Retries, and/or

Backoff

o Security hardening for containers and/or Kubernetes, including but not limited to:

Image signing,

Least privileged containers, and/or

Network policies

o Performance engineering for either/both:

Low latency, high availability systems and

Real time media workloads

Certifications, including but not limited to:

o AWS (e.g., Developer, SysOps, and/or DevOps Engineer),

o CKA and/or CKAD, and/or

o HashiCorp Terraform Associate

Best Regards,
Muhmmad Qurasi
muhmmadq@sysmind.com