Dev Ex Engineer III - Infrastructure

An Introduction to Primer

Primer is the unified infrastructure for global payments. We give finance and payments teams the visibility and control to reduce complexity, improve performance, and capture more revenue - all from a single platform.

Backed by Sofina, Peak XV Partners, ICONIQ, Tencent, Accel, and Balderton, we're building the payments layer the world's best companies rely on.

Watch our showcase >

Read up on our $100m Series C

Learn more about our culture >

Which team will you be joining?

You'll join Infrastructure, the team that owns the platform every other Primer engineer builds and ships on. CI/CD, deployment, internal tooling, ephemeral environments: if it's how code gets from a laptop to production safely, it's ours.

We operate the way the rest of Primer does. Remote-first, async, high autonomy, low bureaucracy. You build it, you own it, and that includes running it in production. You'll report to the Engineering Manager for Infrastructure & Data and work alongside a small group of senior infrastructure engineers.

What makes this interesting right now is the human-AI development loop. Coding agents are changing how software gets built, and we want someone to own how that actually works at Primer rather than bolting it on. That part of the role is yours to define.

What will you be doing?

• Own Primer's internal developer platform end to end: the CI/CD pipelines, deployment workflows (canary, blue/green), self-service tooling and ephemeral environments that every engineer here depends on to ship.
• Build the human-AI development loop. This is the most open part of the role: the tooling and automation that let engineers work effectively alongside coding agents, and the patterns that make agent-driven workflows fast and safe at Primer.
• Treat developer productivity as a measurable system. Instrument it, find where delivery actually slows down, and ship the changes that fix it instead of guessing.

Familiarity with MCP servers and agent integration patterns.

Payments, fintech or other regulated-industry experience.

You may not like it here

• We're remote-first and async-first. Nobody is looking over your shoulder, and nobody is going to hand you tightly scoped tasks. You own your work from problem to production.
• This role carries real operational weight. You're on call for what you build, and when something breaks at an awkward hour, that's yours too.
• The AI-enablement side of this is genuinely undefined. There's no playbook yet. If you want a clear, settled remit, this isn't it. If you want to write one, it is.
• Pace and ambiguity are constant. Priorities shift as we learn, and you'll often be making calls without complete information.
  
  

✅ A typical interview process

• An initial intro call with a Talent Partner
• An interview with the Hiring Manager
• Challenge Stage - Contextualised to the role
• A final, values-alignment interview
  
  

What's the culture like at Primer?

We're building a culture where people can do their best work and be proud of the impact they have. You'll be working with people who are mission-driven, smart, and reflective, and who are genuinely invested in building exceptional products and delivering success for our merchants.

We work remotely, and have done since day one. We believe that building a successful, profitable company goes beyond proximity. We invest in our relationships through great remote working practices and thoughtfully designed face-to-face time, including workations, our annual company retreat, and access to co-working spaces across most major cities.

The work is challenging. Scaleups are a challenge, and building category-defining products is a challenge. But there's a meaningful difference between a challenge and a struggle. At Primer, the right challenge comes with the right support: strong onboarding, a collaborative environment, and a team that is genuinely invested in your success. It's never something you face alone.

Our benefits

🌍 We are fully remote and globally distributed; and have been since day one

💰 Competitive share options

🌴 Uncapped holiday, with 25 days minimum to be taken

🗣️ Co-working space access across major cities

📅 Workations & Company Retreat

💻 The best equipment for your role

🏠 £500 towards your home office setup

🔎 Generous learning budget

🏥 Private Medical Insurance

📈 A broad set of additional perks and benefits (depending on location)

Don’t meet every single requirement?

At Primer, we're dedicated to building a diverse, inclusive, and authentic workplace. If you're excited about this role but your experience doesn't align perfectly with every qualification listed, we encourage you to apply. You may be the right candidate for this or other roles.

Primer is committed to the equal treatment of all current and prospective employees and adopts a zero-tolerance approach to discrimination, regardless of age, disability, sex, sexual orientation, pregnancy and maternity, race or ethnicity, religion or belief, gender identity, marriage and civil partnership, or any other background or belief.