Senior/Principal Full Stack Developer
First seen by Alion on Oct 28, 2026.
What you will be working on
End-to-end delivery: Turn business and operational needs into well-designed, testable and supportable product features
across frontend, backend and data layers.
Frontend engineering: Build clear, responsive and accessible interfaces using React with TypeScript using component
design, state management, error handling and performance optimization.
Backend and API engineering: Design secure, observable and resilient services and APIs, including validation,
authorization, idempotency, failure handling and versioning.
Data and integration: Model data and implement integrations for relational and event-driven workloads.
Production ownership: Participate in design reviews, code reviews, testing, release readiness, incident diagnosis, root?cause analysis and permanent corrective actions.
Engineering leadership: Break down complex work, challenge weak assumptions, improve team practices and coach
engineers through practical examples and reviews.
Security and compliance: Apply secure-by-design practices for sensitive and operational data, including least privilege,
secrets handling, auditability, data residency and security review requirements.
Cross-team delivery: Work directly with product owners, planners, OT teams, infrastructure, cybersecurity, vendors and
business users to resolve constraints and deliver sustainable outcomes.
Agentic AI development: Leverage AI-assisted development tools (e.g. GitHub Copilot, agentic coding assistants and AI?powered developer platforms) to accelerate software delivery while maintaining engineering quality.
What we are looking for
5-7+ years of professional software engineering experience, including substantial ownership of production full-stack
systems. Strong candidates with equivalent depth of experience will also be considered.
Strong production experience with Golang, React and TypeScript, including component architecture, hooks, state
management, forms, testing and frontend performance.
Strong backend development experience in at least one modern language and framework, with evidence of designing and
operating APIs and services in production.
Solid system-design fundamentals: service boundaries, scalability, reliability, consistency, caching, concurrency, failure
modes and pragmatic trade-offs.
Experience with asynchronous processing, messaging or event streaming, including retry, ordering, duplicate handling and
operational monitoring.
Cloud-native delivery experience on Azure or an equivalent platform, including containers, CI/CD, configuration and secrets
management, observability and production troubleshooting.
Demonstrated testing discipline across unit, integration, contract and end-to-end levels, with sensible use of test automation
rather than reliance on manual verification.
Strong written and verbal communication. Able to explain technical decisions, risks and trade-offs clearly to engineering and
non-technical stakeholders.
Experience in using AI-assisted SDLC and software delivery practices.
Ability to review AI-generated outputs and ensure they meet security, performance, reliability and maintainability
requirements
Skills
communication processes, Candidate Screening, Business Design, API Management, TypeScript, Work Preparation, Data Integration, Pragmatic, data consistency, Authorization, Developing Frameworks, React Native, Data Access Layer, Error Handling, Failure Analysis, Management