Lead Full Stack Engineer
First seen by Alion on Aug 29, 2026.
About the Role :
As a Lead Full Stack Engineer, you will own meaningful parts of the Rocketlane product from design through production.
Responsibilities :
- Design and build features end-to-end across our React frontend and Java backend.
- Work closely with Product and Design to turn customer problems into simple, thoughtful product experiences.
- Build polished, performant user experiences for complex SaaS workflows.
- Design clean APIs, data models, and backend services that can scale as our customers and usage grow.
- Solve challenging product problems involving real-time collaboration, rich interactive experiences, workflow automation, large datasets, and highly configurable enterprise use cases.
- Make thoughtful architectural decisions across frontend, backend, database, caching, and asynchronous processing.
- Own the performance and reliability of what you build from browser performance through API latency and database queries.
- Debug complex issues across the entire stack rather than stopping at service boundaries.
- Write maintainable, well-tested code and raise the quality bar through thoughtful code reviews.
- Identify technical debt and proactively improve architecture, developer experience, observability, and engineering productivity.
- Mentor engineers and help the team make better technical decisions.
- Take ownership of features in production and work with the team to diagnose and resolve issues quickly.
- Participate actively in engineering design discussions and influence how Rocketlane's technology evolves.
Requirements:
- We're looking for an engineer who has strong depth in at least one part of the stack, solid engineering fundamentals across the others, and the ability to independently take a customer problem from problem design, architecture, backend, frontend, and production.
Frontend Stack :
- React, modern JavaScript/TypeScript, SPA architecture, component design, HTML/CSS, state management, browser fundamentals, frontend performance profiling.
Backend Stack :
- Java, Spring, HTTP/REST API design, PostgreSQL, Redis, asynchronous processing, message brokers, distributed systems fundamentals.
You'll thrive here if :
- You enjoy owning problems rather than just completing tickets.
- You care about both how a product works and how it feels to use.
- You can move quickly without compromising engineering fundamentals.
- You are comfortable working through ambiguity and breaking large problems into smaller ones.
- You enjoy collaborating directly with product and design.
- You are willing to dive into unfamiliar parts of the stack when the problem requires it.
- You care about performance, reliability, and maintainability.
- You enjoy mentoring other engineers while remaining deeply hands-on.
- You like learning, experimenting, and continuously improving the way software is built.
Nice to have :
- Experience building B2B SaaS products, startup/high-growth company experience, AWS, Docker, CI/CD, real-time collaborative applications, WebSockets, high-volume APIs, Playwright/Cypress, enterprise-grade integrations, and AI-assisted product development.
Skills
Java, React.js, SaaS, Full Stack, Spring, PostgreSQL, Redis, Workflows