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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer (Mid/Senior) - **Company:** The Arena Corporation - **Location:** Washington, DC, United States (Remote available) - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Amazon S3, Business Analytics Applications, Automation of Tests, Code Review, Software Design Patterns, Identity and Access Management, Python (Programming Language), Key Management, PostgreSQL, MongoDB, MySQL, Node.Js, OAuth, OpenID, Systems Development Life Cycle, Redis, Security Assertion Markup Language (SAML), Secure Coding, Software Construction, Software Engineering, Systems Integration, Web Application Frameworks, ReactJS, Large Language Models, Backend, Gitlab, Git, Vue.js, Event Driven Architecture, Amazon Relational Database Service, Containerization, AI Platforms, AngularJS, Gitlab-ci, Kubernetes, Non-relational Database, Graphql, Data Management, Functional Programming, Api Design, Cloudwatch, Restful APIs, Software Version Control, Devsecops, Docker, Static Application Security Testing, Golang, Microservices, Dynamic Application Security Testing - **Published:** June 30, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9003731/software-engineer-midsenior ## About the Role * 4+ years of hands-on software development experience building production systems (8+ years for senior consideration) * Active TS/SCI clearance with active CI Polygraph required - candidate must already hold this; no ability to sit for one as part of onboarding * Proficiency in a modern front-end framework (React, Angular, or Vue) plus at least one back-end language/framework (Python, Node.js, Java, Go, or similar) * Experience with relational and/or non-relational databases (PostgreSQL, MySQL, MongoDB, Redis) * Working knowledge of API design (REST and/or GraphQL) and microservice patterns * Experience with cloud platforms and containerization (Docker, Kubernetes) * Solid grasp of software engineering best practices, design patterns, and version control (Git) * Demonstrated ability and willingness to rapidly learn novel AI platforms and tool integrations, including those enabling agentic AI capabilities * (Senior) Proven track record leading technical teams and mentoring developers * (Senior) Deep knowledge of secure coding practices and auth/authz (OAuth, SAML, OIDC) Bonus Points: * Strong AWS cloud skills (ECS/EKS, Lambda, S3, IAM, RDS, CloudWatch) * Experience with GitLab and GitLab CI/CD * DevSecOps exposure (secure SDLC, SAST/DAST, container/dependency scanning, secrets management) * Familiarity with MCP servers or tool-using LLM systems * Experience with DoD or Intelligence Community analytics and data platforms (e.g., Palantir-adjacent tooling) * Military experience strongly preferred * Intelligence Community experience strongly preferred ## Description We're looking for a Software Engineer (leveled mid to senior depending on experience) to build and maintain full stack software supporting AI/ML and analytic mission operations. You'll work across front-end interfaces, back-end services, and APIs that power mission workflows, collaborating closely with data engineers, AI/ML practitioners, and senior engineering staff. More senior candidates will additionally take on architectural ownership, technical mentorship, and team-level technical direction. What You'll Be Doing: * Design and implement full stack software components for AI/ML and analytic applications, from front-end UIs to back-end services and APIs * Develop RESTful APIs, microservices, and event-driven architectures * Build user interfaces and operator-facing dashboards used in mission workflows * Collaborate with data scientists, AI/ML engineers, and the broader engineering team on system integration and optimization * Implement automated testing and contribute to CI/CD pipelines and DevSecOps tooling * Participate in code reviews and maintain high coding quality, security, and performance standards * Troubleshoot and resolve issues across development and production environments * Support development and operation of MCP server integrations and agentic AI tooling * (Senior) Lead architectural decision-making, technology selection, and technical direction across complex systems * (Senior) Provide technical mentorship to mid- and junior-level engineers; establish coding standards and development practices ## Related Videos - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Reducing LLM Calls with Vector Search Patterns - Raphael De Lio (Redis)](https://www.wearedevelopers.com/videos/1714-reducing-llm-calls-with-vector-search-patterns-raphael-de-lio-redis) - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [Shipping Faster with Less: Render on Cloud Hosting, AI Workloads, and the Future of DevOps](https://www.wearedevelopers.com/videos/1894-shipping-faster-with-less-render-on-cloud-hosting-ai-workloads-and-the-future-of-devops) - [Delay the AI Overlords: How OAuth and OpenFGA Can Keep Your AI Agents from Going Rogue](https://www.wearedevelopers.com/videos/1637-delay-the-ai-overlords-how-oauth-and-openfga-can-keep-your-ai-agents-from-going-rogue) - [Accelerating Authentication Architecture: Taking Passwordless to the Next Level](https://www.wearedevelopers.com/videos/733-accelerating-authentication-architecture-taking-passwordless-to-the-next-level) ## Related Articles - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Best US AI Conferences for CTOs in 2026: Build vs. Buy, Vendor Evaluation, and Peer Intelligence](https://www.wearedevelopers.com/magazine/736-best-us-ai-conferences-for-ctos-in-2026-build-vs-buy-vendor-evaluation-and-peer-intelligence) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline)