Senior Full Stack Engineer

Job Description

Job Description:

TMCI is seeking an experienced Full Stack Engineer to design, develop, test, deploy, and maintain enterprise applications supporting federal government customers. The Full Stack Engineer will be responsible for developing solutions across the complete application stack, including user interfaces, backend services, APIs, databases, cloud infrastructure, automated testing, and deployment pipelines.

This position will support new application development, enterprise application modernization, system integration, cloud migration, and sustainment of federal systems. The candidate must demonstrate the ability to identify opportunities to improve application architecture, development processes, automation, performance, and reliability.

Occasional after-hours support, deployments, or maintenance activities may be required based on program requirements.

Key Responsibilities:

Design, develop, document, and integrate APIs and web services

Develop scalable backend services and applications using technologies such as Node.js, Python, or similar platforms

Build the React/TypeScript interface based on defined application requirements

Design PostgreSQL schemas with strong access control, effective-dated policy and auditability

Develop and implement deterministic and configurable business rules

Own end to end application functionality through migration, API, user interface, tests and containerized deployment

Leverage AI engineering tools throughout workflow approved for use in the customer environment

Develop responsive, accessible, and user-friendly web applications using modern front-end frameworks

Design and optimize relational and/or NoSQL databases, including data models, schemas, queries, indexes, and stored procedures

Develop solutions that integrate with existing enterprise applications, databases, APIs, and external systems

Implement authentication, authorization, encryption, auditing, input validation, and other application security controls

Participate in code reviews and promote software engineering standards, coding conventions, reusable components, and maintainable architecture

Troubleshoot application defects, performance issues, integration problems, and production incidents across the full technology stack

Develop and deploy applications within cloud environments such as Cloud One, AWS, or Azure

Develop technical documentation, architecture diagrams, API documentation, deployment documentation, and system design artifacts

Participate in Agile ceremonies, including sprint planning, backlog refinement, daily stand-ups, sprint reviews, and retrospectives

Work closely with government customers and subject matter experts to understand requirements and translate business needs into technical solutions

Analyze existing applications and recommend improvements related to scalability, performance, maintainability, security, and user experience

Required Qualifications:

US Citizenship and the ability to obtain and maintain a government clearance required

Bachelor’s degree in Computer Science, Software Engineering, Information Technology, Computer Engineering, or a related technical discipline from an accredited institution

Work Location: Hybrid, Mclean, Virginia, or within the continental United States

Work Schedule: Predominantly Eastern Time (EST) business hours to support customers and geographically distributed teams

10+ years of analytical and software development experience, with demonstrated full-stack development experience

Demonstrated experience developing both front-end and back-end applications

Strong experience with production Node.js

Strong understanding of TypeScript

Hands-on professional experience building React applications with TypeScript

Experience designing and developing APIs and web services

Strong PostgreSQL fluency- query plans, indexes, transactions and migrations

Demonstrated experience using AI coding tools (e.g., GitHub Copilot, Claude Code, Cursor), including reviewing and testing generated code and following the environment's approved-tool and data-handling rules

Experience with Cloud One, AWS, Azure, or another enterprise cloud platform

Experience developing and maintaining automated software tests

Experience deploying containerized applications (e.g., Docker) through CI/CD pipelines

Strong problem-solving and analytical skills

Excellent written and verbal communication skills

Ability to work independently while collaborating effectively with cross-functional technical teams

Preferred Qualifications:

Experience with Kubernetes and DoD software factory environments (e.g., Platform One, Kessel Run)

Experience with OIDC/SAML, PKI/CAC authentication, and OpenTelemetry

Security Engineering experience

Experience supporting U.S. federal government customers, particularly DoD, DHA, or other federal healthcare or civilian agencies

Experience developing and maintaining CI/CD pipelines using GitLab, GitHub Actions, Azure DevOps, or similar tools

Experience with accessibility and Section 508 requirements

Experience supporting systems subject to NIST, RMF, FISMA, or other federal cybersecurity requirement.

Familiarity with IL4/IL5 environments and DoD DevSecOps practices

Experience with legacy application modernization and cloud migration

Experience with Agile development frameworks such as SAFe

AWS, Azure, or other relevant professional certifications

Experience building rules engines, policy or eligibility logic, or effective-dated data models (e.g., healthcare, insurance, benefits, or financial systems)

Active security clearance or favorably adjudicated federal background investigation

Salary Range: The salary range noted represents the company’s minimum and maximum range for this role at the time of posting. The salary made at offering for this position is based on a comprehensive evaluation of candidates' skills, years of experience, and directly related expertise to the specific requirements of the role. Compensation will be determined by considering various factors, including but not limited to the individual's qualifications, competencies, and alignment with the responsibilities outlined in the job description.

TMCI is an Equal Opportunity Employer, including disability and protected veteran status.\nCompany Description

TMCI - The McVey Company, Inc. brings over 25 years of corporate experience within and in support of the Department of Defense (DOD). With a proven track record, TMCI has been involved as both a prime and sub-contractor for various projects within the Defense Health Agency (DHA) and Military Health System (MHS). We actively collaborate with companies of all sizes to expand our capabilities and better serve our customers.

Full-time