Senior Full Stack Engineer

Labs is k-ID's innovation team. It builds the products and capabilities that become the next generation of the platform, working closely with the customers who will be the first to use them. As a Senior Full Stack Engineer in Labs, you own the build. You take validated ideas and turn them into products a customer runs in production, then you make them hold up as that customer scales. The work reaches real users quickly, and you will be close to the people using it. Labs builds with agents. Day to day that means writing detailed specifications, working with agents to build against them, reviewing the code that comes back, and continually iterating on and improving your own rig so that the next build is better than the last. Shaping how the team works this way is part of the role, not a side effect of it. This is a hands-on senior role for someone who executes independently, makes sound technical decisions, and thrives where systems and processes are still taking shape. You will make architecture calls, own the quality bar, and operate what you ship. Qualifications

Bachelor's degree in Computer Science or equivalent practical experience

6 or more years of professional software engineering experience, ideally in a startup or high growth environment

Demonstrated experience using coding agents for production work, including how you specify work for them and how you review what they produce

Strong experience with Go, TypeScript, React, and Next.js

Experience building modern full stack applications using technologies such as PostgreSQL, Redis, S3, and Kubernetes

Experience with server rendered web applications and modern frontend architecture

Experience taking a system from technical design through to production, and operating it once it is there

Experience partnering with designers to build polished and intuitive user experiences

Comfort working across product requirements, technical design, implementation, testing, and production support

Ability to operate effectively in a fast paced environment with ambiguity and changing priorities

Strong written and verbal communication skills in English

Ability to work with a few hours of overlap each day with the wider team, starting from 14:00 UTC

Familiarity with compliance related or regulated product environments is a plus, but not required

Responsibilities

Build and maintain the full stack applications behind k-ID's newest products, from first release through to production scale

Write the detailed specifications that agents build against, and review the resulting code to a high standard

Iterate on and improve your own development rig so that each build is better than the last

Contribute to technical design and implementation decisions across frontend, backend, APIs, and data flows

Harden new systems for load and accuracy before they scale

Work with product managers, designers, and legal stakeholders to turn complex requirements into clear and usable product experiences

Develop responsive, reliable, and maintainable applications using Next.js and related technologies

Improve and support production systems by identifying issues, debugging effectively, and shipping fixes with care

Write clean, well tested code and help maintain a high bar for code quality, performance, and developer experience

Participate in code reviews, technical discussions, and team problem solving

Contribute positively to the engineering culture through ownership, collaboration, and a willingness to improve how the team works