Full Stack Engineer

An Introduction to Primer

The 21st century has witnessed remarkable expansion within the payments ecosystem with the introduction of new payment services, growth in cross-border commerce, and the development of multi-payment processor payment strategies.

The bottom line is that payment is no longer just another step in the purchasing funnel but a strategic asset that can drive business growth and innovation.

Enter Primer - the world's first unified payment infrastructure, empowering businesses worldwide to unleash their payment potential. By choosing our platform, merchants can take control over their payment stack, create unique commerce experiences, accelerate their roadmap and increase payment success.

Primer's enterprise-grade infrastructure, frameworks, and tooling allow merchants to unify their disparate payment solutions and services to build optimised payment flows tailored to their unique business needs with no code or additional complexity. We strive to make something complex incredibly simple and intuitive.

Our success so far has been reflected in the trust placed in us by category leaders such as Printify, NewLook, Voi, and Dabble, who are using Primer to transform their payments into a growth lever. Moreover, the world's top investors, including Accel, Balderton, Iconiq, and Tencent, have also invested in Primer's vision to rebuild payments and commerce from the ground up.

Join us in shaping the future of payments and commerce. Let's pave the way for a world where businesses can fully realise their payment potential.

Our engineering teams work fully remotely across Europe but we are focusing our hiring strategy on these locations: UK 🇬🇧, Hungary 🇭🇺, Romania 🇷🇴, Serbia 🇷🇸, Turkey 🇹🇷, Bosnia 🇧🇦, and Greece 🇬🇷.

Unfortunately we are unable to offer VISA sponsorships or relocation packages at this time.

What will the role involve?

• Improve and optimize fallback mechanisms to ensure seamless payment processing.

• Enhance reliability by implementing smart routing and failover strategies.

• Redesign data pipelines to improve monitoring, tracking, and real-time insights.

• Ensure data accuracy and integrity across payment systems.

• Build and refine an A/B testing framework to test different payment flows.

• Develop if X, then Y decision-based logic to optimize transaction success rates.

• Enable rapid iteration and data-driven improvements in the payments experience.

What are we looking for?

• A Full-Stack Developer with a strong focus on Frontend development (JavaScript/TypeScript + React).

• Someone comfortable working across the stack, with some backend experience (Python preferred) but primarily frontend-heavy.

• Experience with testing frameworks and a good approach to writing testable, maintainable code.

• Be willing to set goals, success metrics, driving and setting up sprints and driving refinement sessions of the tickets and driving delivery side on a day to day basis.

• In-depth understanding of the entire development process (design, development and deployment)

• Highly motivated self-starter who values autonomy and getting things done

• Excellent verbal and written communication skills

• Experience working in a fast-paced environment.
  
  Our interview process

  • 30 minute call with a Talent Partner

  • 45 minute interview with an Engineering Manager

  • 90 minute pair programming interview

  • 60 minute systems design interview

  • 60 minute final stage culture interview

What’s the culture like at Primer?

We’re building a culture where people can come and do their best work and enjoy it. We want our people to be proud of the impact that they have at Primer, and of the work that they are doing. You will be working with a team of people who are mission-driven, smart, and reflective, and who are invested in building exceptional products and delivering success for our merchants (and we also know how to have fun along the way).

We work remotely. We believe that building a successful, profitable company goes beyond proximity. We invest in our relationships with each other through great remote working practices and thoughtfully designed face-to-face time together. Our heads-together time comes in the form of workstations, our annual company retreat, and co-working space access worldwide.

Finally, let’s go ahead and say it. The work that we do is challenging. Startups are a challenge, building category defining products is a challenge. You should be prepared for a challenge at Primer. But, there’s a big difference between a challenge and a struggle. The key difference is that the right challenge comes with the right support structures, an acceptance that not everything always goes to plan, a collaborative environment, and a great team around you. It’s never a challenge that you will face alone.

Our benefits:

• We are fully remote

• Competitive share options

• Uncapped holiday, with 25 days minimum to be taken

• Co-working space access

• Workations & company retreat

• The best equipment for your role

• £500 towards your home office setup

• Generous learning budget

• 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 past experience doesn’t align perfectly with every qualification in the job description, 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, regardless of background or beliefs—see our diversity commitment statement for more details

Equity, diversity, inclusion and belonging policy

Primer adopts a zero-tolerance approach to discrimination.

We are committed to providing equal opportunities to all current and prospective employees regardless of age, disability, sex, sexual orientation, pregnancy and maternity, race or ethnicity, religion or belief, gender identity, or marriage and civil partnership.