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# Senior Software Engineer (Technical Lead)

- **Company:** 540
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), JavaScript (Programming Language), Agile Methodology, Amazon Web Services, Unit Testing, Software Quality, Code Review, Relational Databases, Software Debugging, Distributed Systems, Spring Framework, PostgreSQL, MongoDB, Node.Js, Cloud Services, Software Deployment, Software Engineering, Software Testing Automation Framework, Systems Integration, TypeScript, Web Applications, Cloud Platform System, Backend, SC Clearance, Containerization, AngularJS, Playwright, Data Analytics, Non-relational Database, Front End Software Development, NestJS, Restful APIs, Jasmine, Docker
- **Published:** July 9, 2026
- **Apply:** https://www.clearancejobs.com/jobs/8917030/senior-software-engineer-technical-lead

## About the Role

Citizenship & Clearance Requirement: per client requirements, candidates must be a U.S. Citizen with the ability to obtain a DoW Secret clearance
Education Requirement: Bachelor's Degree
540 Internal Thrive Level: Senior Software Engineer, 8+ years of professional software development experience
4+ years of experience with JavaScript / TypeScript
Experience building backend services with Node.js and/or NestJS
Experience developing modern front-end applications using Angular (2+)
Experience designing and integrating RESTful APIs and data-driven web applications
Experience working with relational databases (PostgreSQL)
Experience working with non-relational databases (MongoDB)
Proficiency working in an Agile environment (i.e. backlog refinement, story size estimation, etc)
Ability to handle the creation/distribution of release notes
Coordination of application deployments
Ability to identify and communicate technical requirements needed to implement a feature
Identify/collaborate with team over new technical work/gaps within applications
Strong problem-solving and troubleshooting skills
Excellent verbal and written communication skills
Ability to work independently in client-facing environments while collaborating effectively with a team

NICE TO HAVE SKILLS & EXPERIENCE

Experience with test automation frameworks with Playwright
Experience developing in Java and working with the Spring framework
Experience with containerization with Docker
Experience writing unit tests with Jest or Jasmine
Experience working in cloud environments (AWS preferred)
An understanding of cloud services and when to utilize them
An understanding of technical architecture design
Experience completing Security Technical Implementation Guides (STIGs)

## Description

540 is looking for a Senior Software Engineer to help improve the efficiency of acquisition and procurement within the Department of War. We are looking for a startup-minded individual to work within an Agile team focusing on full stack development with JavaScript / Typescript, Java, Spring, Node and Angular primarily.

On this project, you will be supporting the development and implementation of several web applications that assist procurement specialists within the Department of War to help them become more efficient. These applications use modern technologies to gather and display relevant information in a user-friendly way, which help the client increase data consistency for systems of record. With better standardization across these source systems, the client will have better insight into the procurement landscape that will help them develop and drive policy for the entire Department of War.

Alongside project responsibilities, this role will also serve as the project's Technical Anchor for 540. In this capacity, you will help drive the overall technical delivery and success of the project in partnership with the Project Anchor and internal team members. Responsibilities include establishing and maintaining technical standards aligned with organizational objectives, providing technical guidance and coaching to team members, and helping lead technical innovation and continuous improvement efforts across the project., Design, build, and deliver scalable, user-facing applications that support mission-critical workflows in a modern cloud environment
Own features end-to-end-from requirements and design through development, testing, and deployment
Collaborate directly with engineers, architects, and stakeholders to translate complex requirements into practical, working solutions
Develop and integrate RESTful APIs and data-driven services across distributed systems
Contribute to front-end development using Angular while supporting backend services in Node.js / NestJS
Debug and resolve issues across the stack, ensuring performance, reliability, and maintainability
Operate with a high degree of autonomy-able to move work forward independently while staying aligned with the broader team
Continuously improve code quality through testing, code reviews, enforcing coding standards and thoughtful design decisions
Bring a builder mindset-focused on delivering real, working software over theoretical perfection
Mentoring fellow developers and encouraging overall team growth
Assisting in the removal of blockers to keep a high velocity within the team


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