Fullstack Engineer

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.

The core requirements for the job include the following:

You should apply if you are a Frontend Engineer:

You are comfortable with:

• React and modern JavaScript/TypeScript
• SPA architecture and component design
• HTML and CSS
• State management and complex client-side application flows
• Browser fundamentals such as caching, storage, networking, and rendering
• Building reusable components and maintainable frontend architecture
• Frontend performance profiling and optimization
• Building responsive and high-quality product experiences
• Experience with real-time applications, WebSockets, large data-heavy interfaces, rich editors, or spreadsheet-like experiences is a plus.

Backend:

You have strong fundamentals in:

• Java and Spring or similar backend frameworks
• HTTP and REST API design
• PostgreSQL or other relational databases
• Data modelling and query performance
• Redis and caching
• Asynchronous processing and message brokers
• Designing scalable and resilient backend services
• Performance optimization
• Debugging and root-cause analysis
• Logging, monitoring, and production troubleshooting

Engineering fundamentals:

Beyond knowing frameworks, we expect you to understand why systems behave the way they do.

You should be comfortable discussing topics such as:

• API and system design
• Database transactions and concurrency
• Caching strategies
• Distributed systems fundamentals
• Failure handling and resiliency
• Performance and scalability
• Security and authorization
• Testing strategy
• Production observability
• Clean code and maintainable architecture

Nice to have:

• Experience building B2B SaaS products.
• Experience in a startup or high-growth product company.
• AWS experience.
• Docker/containerization experience.
• Experience with CI/CD pipelines.
• Experience building real-time collaborative applications.
• Experience with WebSockets.
• Experience working with high-volume APIs or large datasets.
• Experience with Playwright, Cypress, or similar automation frameworks.
• Experience designing enterprise-grade integrations.
• Exposure to AI-assisted product development or AI-powered product experiences.