Senior Agentic Full-Stack Developer
Our AI agents write the code. We need the senior developer who leads them.
SolidBrackets is looking for a Senior Agentic Full-Stack Developer: a hands-on developer who meets the customer, designs the solution from their own experience, has AI agents build it, reviews every change and ships it to production. Employee or freelancer, your choice.
- Contract
- Permanent employee or freelance
- Hours
- Full-time preferred, 4/5 negotiable
- Location
- Belgium, hybrid or remote
- Language
- Dutch or English
- Start
- As soon as possible
About SolidBrackets
SolidBrackets builds enterprise software on its own microservice platform. Its reusable services mean every new solution starts from proven building blocks instead of from scratch, which cuts development time. Clients run it as SaaS on our multitenant Kubernetes infrastructure, or on-premise.
Every solution is tailor-made, so clients can run their business the way they want instead of changing how they work to fit a standard package. We build all kinds of enterprise software with a focus on SaaS, including several complex ecommerce solutions with logistics integrations and dunning.
We also help clients implement AI in their own organisation, with our own tooling and consultancy.
What makes us different is who writes the code. A fleet of AI agents picks up planned Jira cards, implements them, runs the tests and opens the pull requests, around the clock. Junior, medior and senior agents each get work that fits their level.
The agents are fast. They are not wise. That is where you come in.
The role
You are a developer first: you design the solution, write the hard parts yourself, and lead the AI agents that do most of the typing. Every card starts and ends with you.
A pull request that isn't good enough goes back to the agent with your notes; only work you have reviewed and tested goes live.
What you'll do
- Turn customer needs into plans. Meet the customer, find the real need, and design the solution from your own senior experience. Write it up as a Jira card an agent can build without guessing: architecture, scope, the services involved, acceptance criteria and the go-live steps.
- Run the queue. Decide what goes to which agent and at what level, unblock agents that park a card with a question, and keep the board moving.
- Code where it counts. Write the tricky parts yourself, pair with an agent on the rest, and take over when an agent gets stuck.
- Review the code. Read every pull request the agents open. Hunt for regressions, security holes, duplicated code and quiet behaviour changes, and send work back when it isn't right.
- Test by hand. Click through the feature on staging the way a customer would. Agents are good at making tests pass; you check that the product actually works.
- Ship it. Merge, run migrations and config changes, deploy to production, and confirm the right version is live.
- Make the factory better. Every mistake an agent makes twice is a rule missing from its handbook. You write that rule.
Who you are
You are a senior full-stack developer who still loves to code, and who sees AI agents as a team that multiplies what you can build.
Must have
- 5+ years of full-stack web development, ideally TypeScript / Node.js
- Comfortable in customer meetings, turning a conversation into a technical design
- You read a pull request and spot the bug before the tests do
- You can write a spec a stranger could build from: clear scope, clear acceptance criteria
- Comfortable with Git, Docker, SQL and CI pipelines
Nice to have
- Daily experience with AI coding agents (Claude Code or similar)
- Kubernetes and multitenant microservice architectures
- Background in ecommerce or custom enterprise software
- Jira and Bitbucket
- Experience as a tech lead, product owner or QA engineer
What we offer
One of the first jobs of its kind: you will help define how a software company runs when its developers are agents.
| Employee | Freelancer | |
|---|---|---|
| Contract | Permanent, full-time or 4/5 | Long-term assignment, 3 to 5 days a week |
| Pay | Competitive salary + Belgian benefits package | Day rate, to be agreed |
| Workplace | Hybrid or remote, flexible hours | Remote, flexible hours |
| Tools | Laptop + paid AI tooling | Paid AI tooling for the assignment |
Both tracks get the same work: direct line to the founder, real ownership of what ships, and no meetings for the sake of meetings.
How to apply
Skip the cover letter. Send us:
- Your CV or LinkedIn profile
- Whether you want the employee or freelance track (and your day rate, if freelance)
- One short write-up: a feature you would add to a business application, written as the card you would hand to an AI agent
We reply to every application within a week. The process is one intro call, one practical session where you review a real agent pull request, and an offer.
Apply at hi@solidbrackets.com