Ready to build software that tackles climate change head-on? We're Payaca, and we're on a mission to accelerate the world’s net zero emissions transition. We're looking for a Senior Frontend Software Engineer to join our small but mighty team in Bristol.
In the UK transport, electricity, and heating account for 60% of greenhouse gas emissions. To limit global temperature increases to 2°C, we and the rest of the planet must decarbonise these sectors by 2050. We know exactly how: switch to low carbon technologies like EVs, solar PV, and heat pumps. The problem we now face is how can we do so fast enough?
That's where Payaca comes in. We empower installers of all these low carbon technologies. Helping them work faster, scale their businesses and, in turn, scale the UK's green energy future.
What you'll do
You'll be working across the codebase, with a focus on your specialism (frontend or backend). We're a small company, so this role has a wide variety of responsibilities:
- Take user requirements and build solutions
- Tackle gnarly technical projects that require independent research
- Define in detail large projects for delegation within the engineering team
- Championing of process improvements to enhance our engineering excellence
- Mentoring your peers, helping them improve
We don't have dedicated Product Managers, so you'll have the freedom and responsibility to make key decisions yourself, in collaboration with the rest of the team. This is a chance to have a direct impact on our product and our mission.
Our stack is built on modern, familiar technologies:
- Frontend: React, React Native / Expo, TypeScript, Tailwind, Figma
- Backend: Node.js, TypeScript, PostgreSQL, GraphQL
- Infrastructure: Google Cloud Run, Firebase Hosting, Terraform, CircleCI
- DX: Monorepo, pnpm, Macbook
- AI: Claude Code, GitHub Copilot
What it's like working at Payaca
Our engineers’ work calendar are close to empty, with most days fully available for focus time after morning standup.
We are T-shaped engineers - we each have a speciality, but still get stuck into areas outside of them. We encourage full-stack development with expert review, avoiding ticket pass-the-parcel.
We are massive champions and adopters of agentic AI across the company. To name a few examples:
- Our engineers delegate much of their workload to coding agents, enabling us not just to ship more features but also to tackle ambitious refactors.
- Our customer support staff use agents with codebase access to triage even the most obscure customer questions without interrupting engineers.
- Our customer onboarding staff use agents connected to our application APIs to turn lengthy manual tasks into a chat conversation.
- When we get a platform error notification in Slack, we'll @ Claude to give it a first triage and fix attempt before distracting an engineer.
- Staff outside of engineering are able to contribute PRs (of decent quality!) reviewed by engineers but authored and amended entirely by agentic AI, thanks to well documented engineering tastes.
We are at the bleeding edge of AI tooling adoption because we are seeing huge productivity boosts in it. The way software businesses operate is changing as fast as the tooling and models evolve. Some might say it's scary, but for us it's exciting to witness what a small team can achieve today.
Your experience
- 4+ years experience with TypeScript
- 4+ years experience with React or Node.js / other backend programming languages
- 3+ months experience in leveraging AI agents
- Experience leading engineering projects in 3+ person teams
- Experience championing agentic AI tooling adoption in an organisation
We value diverse perspectives and encourage you to apply even if you don't tick every box.
What we offer
Work isn't a grind here; it's a mission. We've built a culture that supports you while you do your best work.
- Salary: £65k–£80k
- Location: We're based in the heart of Bristol, UK, and we believe in the power of in-person collaboration. We expect our engineers to work primarily in the office.
- Benefits: You'll get 33 days holiday (including bank holidays), free breakfast and snacks, a chest freezer full of ice cream for the summer, team lunches, and away trips. We also offer a cycle-to-work scheme and flexibility when you need it.
Our engineering philosophy
If these principles resonate with you, you'll feel right at home:
- Simple solutions beat clever ones every time.
- We ship small improvements frequently.
- Arguments win on merit, not seniority.
- If you're not breaking stuff, you're not moving fast enough—we focus on minimising impact over prevention.
- AI is not going to revolutionise how software is built, it already has.
Interview process
- Meet the team (30-minute interview): An informal chat to assess general compatibility and give you a chance to ask us questions.
- Technical take-home (~2 hours + 45-minute interview): You'll receive a dummy GitHub repository and a feature request to implement. We want to see how you work and how you approach a problem using your preferred tools. We'll then discuss your solution and its trade-offs.
- Technical presentation (1 hour interview): You'll prepare a ~20minute presentation on a technical topic of your choosing. Could be a work or hobby project, or an area you find particularly interesting. We'll finish with a Q&A. This is an opportunity for you to demonstrate you really know your stuff!
If any of this format is a challenge for you, please let us know and we will try to accomadate.
How to apply
Ready to help build the future of green tech? If you're excited about what we're building and think you could contribute, we want to hear from you.
