Software Engineer, Fullstack (UK)

firstup

Remote

You're starting your career at a moment when the right early choice matters. Firstup is a communication platform used by 40 Fortune 100 companies to connect millions of employees. As a Fullstack Software Engineer, you'll work on real infrastructure that scales—not a side project—while learning how enterprise systems actually work.

Your work will focus on building and maintaining public APIs, integrations with HR systems, and platform services that power employee engagement at scale. You'll write code that needs to be reliable, handle real traffic, and solve concrete problems. This isn't abstract learning—it's building something people depend on.

This role fits you if you have a solid foundation in software fundamentals, can write clean code in common languages, and understand how systems talk to each other. A portfolio or GitHub showing your work helps more than credentials. You should be genuinely interested in how APIs and integrations work, not just collecting job titles.

Apply directly through CareerJumpShip. Have your resume, a link to your work, and be ready to explain a project you've built. Firstup hires for potential and growth—they want people who can learn and ship code that matters.

About this role

Who We Are At Firstup, our mission is to improve the employee experience at every moment that matters, large and small. As the communication pipeline for the world's workforce, we now serve 40 of the Fortune 100 companies, reaching and connecting more than 17 million employees daily. Our employees are experts in the employee experience, workforce communications and technology. Joining Firstup means joining a movement to make work better for every worker. As the world’s first intelligent communication platform, Firstup meaningfully engages employees at every moment from hire to retire, and delivers engagement insights to help companies support, promote and retain their talent. Our movement has taken root and is evident in our world-class customer base. Now we need your help. Ready to make a difference in the world? Job Summary The Sr. Software Engineer will join the team responsible for Firstup's public APIs, Agentic tools, third-party integrations with enterprise systems such as HRIS platforms, and shared platform services. You will deliver innovative, scalable solutions while constantly improving our approach to architecture, scale, availability, and fault-tolerance. You are an active user of Generative AI tools and coding agents, applying them daily to accelerate delivery and improve code quality.

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