Full-Stack Engineer

• Start ASAP - 3-6 month assisgnment 
• 3–6 years of professional experience in full-stack web development required 

• Looking for a Full-Stack Engineer who thrives in a lean, collaborative environment and isn't afraid to wear multiple hats.
• This role requires strong ownership, adaptability, and the ability to operate across frontend, backend, and platform layers.
• You will work closely with leadership to build, scale, and secure modern applications while helping improve engineering efficiency through automation and emerging technologies.
• You will be building and maintaining production features across the full stack — from database migrations and API logic to TypeScript/React UI — while also engaging in DevOps tasks, security reviews, and cross-functional conversations with stakeholders.
• This is not a role where you hand off a ticket when it hits the edge of your lane.
• You ask the right questions, flag issues early, take ownership of your deliverables end-to-end, and communicate clearly with both technical teammates and non-technical stakeholders.
• If you are excited by the idea of AI and automation tools genuinely improving how you work — not just as a buzzword — you'll fit right in.

• Design, implement, and ship production features across the front-end (React / TypeScript) and back-end (Node.js, Supabase, PostgreSQL)
• Write and maintain database migrations, RLS policies, and edge functions with attention to correctness and security
• Build clean, accessible UI components that deliver a polished user experience
• Participate in code reviews and maintain code quality standards across the team

• Support deployment of pipelines, environment configurations, and production release workflows
• Debug production issues across the stack — auth flows, network failures, database constraints, API errors — and drive them to resolution
• Contribute to infrastructure decisions including subdomain architecture, authentication strategies, and third-party service integrations
• Monitor application health and proactively surface risk areas before they become incidents

• Contribute to security reviews including row-level security policy design, role-based access control, and pen-test findings remediation
• Write tests, validate acceptance criteria, and participate in UAT cycles before production releases
• Support QA automation efforts
• Document technical decisions, known issues, and implementation notes clearly and concisely

• Communicate clearly with a small dev team — surface blockers early, provide honest status updates, and flag scope changes before they become problems
• Ask the right questions before building — clarify requirements, challenge assumptions, and confirm acceptance criteria upfront
• Participate in sprint planning, ticket grooming, and stakeholder demos as needed
• Operate effectively with minimal oversight while staying aligned with team priorities and deadlines

• 3–6 years of professional experience in full-stack web development
• Strong proficiency in TypeScript and React; comfortable with modern hooks, state management, and component architecture
• Solid understanding of relational databases (PostgreSQL preferred) — schema design, migrations, and query optimization
• Experience with REST APIs, authentication flows (OAuth, JWT, session management), and third-party service integrations
• Comfortable in a Unix/Linux environment; familiar with Git-based workflows and CI/CD pipelines
• Strong debugging and problem-solving skills
• Clear, professional written and verbal communication skills — you can explain a technical tradeoff to a non-technical stakeholder without losing the room
• Demonstrated ability to take ownership of a feature or fix from ticket to production without handholding

• Experience with Supabase, Firebase, or similar BaaS platforms
• Familiarity with DevOps tooling — Vercel, Docker, GitHub Actions, or similar deployment infrastructure (monitoring, logging, infrastructure basics)
• Exposure to security concepts: row-level security (RLS), least-privilege access or Role-based Access Control (RBAC), audit logging, or pen testing
• Experience working in a startup or small-team environment where roles overlap and context-switching is the norm
• Active user of AI coding tools (GitHub Copilot, Claude, ChatGPT, Cursor, etc.) and genuine interest in integrating AI into development workflows, automation, and process improvement
• Familiarity with agile tooling — Jira, Linear, or similar sprint management platforms

Additional Information

• All candidates are encouraged to apply, but many positions require a strict drug and background check by our customers.
• F2OnSite supports and adheres to all state laws regarding background checks.