---
title: 'Software Engineer III, Frontend - Account Experience at Primer.io'
canonical: 'https://feeny.ai/job/software-engineer-iii-frontend-account-experience-primer-io-poland-py8shhkfrh5v'
type: 'job'
last_seen: '2026-10-14'
---

# Software Engineer III, Frontend - Account Experience at Primer.io

- **Company:** Primer.io
- **Location:** Poland
- **Employment:** full-time
- **Work type:** remote
- **Posted:** 2026-09-28
- **Last confirmed live:** 2026-10-14
- **Apply:** https://jobs.ashbyhq.com/primer.io/5c84172d-0a35-4ada-846a-1be04d57f10e

## Job description

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 >](https://primer.io/the-primer-showcase) [Read up on our $100m Series C](https://www.primer.io/blog/series-c) [Learn more about our culture >](https://primer.io/careers) Which team will you be joining?

The merchant experience is only as good as the platform behind it. In the Account Experience team we build and own the full platform that merchants use to interact with Primer, from initial setup through to day-to-day operations, and increasingly through Primer AI Companion as a first-class interface. The team covers Primer Companion, Merchant Account Setup, Monitors, Workflows, Auditing, and the cross-cutting platform concerns that keep the merchant experience cohesive and consistent.

🔍 What will you be doing?

- Own frontend projects end-to-end — from scoping through to production — across Account Experience's payment surfaces, checkout components, and merchant-facing tooling.
- Lead architectural decisions on the frontend systems you work on, contributing to design sessions and producing RFCs and ADRs with minimal reliance on more senior engineers.
- Build UI that is composable, performant, and adaptable.
- Monitor the impact of your work in production, use metrics and dashboards to catch issues proactively, and take full ownership when things need to be fixed.
- Hold a high quality bar for your own code and raise concerns when you see things in the codebase that don't meet it.
- Contribute to incident response when it matters — taking the lead, driving to resolution, and keeping stakeholders informed throughout.
- Share knowledge actively and help raise the quality and confidence of the engineers around you.

👀 What we'd love to see

- Solid frontend engineering experience, with a track record of independently delivering production-grade work across the full lifecycle.
- Extensive experience with Typescript and ideally web components.
- Comfortable taking on a project, scoping it, planning the architecture, and seeing it through without needing to be directed at each stage.
- Strong understanding of how to build accessible, performant, maintainable UI at scale — ideally in a context where quality directly affects end users or downstream integrations.
- Able to contribute meaningfully to architecture discussions and articulate trade-offs clearly.
- Writes clean, well-tested code that peers would consider high quality — and holds yourself to that standard consistently.
- Understands the user and business context behind the work, not just the technical brief.
- Communicates clearly and directly, especially in async-first environments.

✅ 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 🌴 Flexible 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.

## About Primer.io

## Company Overview
- **One-liner**: Primer provides an AI-powered unified payments infrastructure that lets merchants accept, manage, and optimize every transaction from checkout to payout.
- **Entity Type**: Private – Series C (raised $100M in 2026)
- **Headquarters**: London, United Kingdom
- **Founded**: 2020
- **Founders**: Gabriel Le Roux and Paul Anthony

## Core Business
- **Primary industry**: Payments infrastructure / Fintech
- **Target customers**: B2B – merchants of all sizes (SMB to enterprise), payment and finance teams
- **Mission**: Build the world’s first unified payments infrastructure, making payments a source of growth rather than just a cost of doing business

## Products & Services
- **Primer Platform (Accept, Manage, Optimize)**: A single integration connecting multiple payment providers. Covers acceptance, routing, reconciliation, FX, and fallbacks. Includes no-code Workflows.
- **AI Companion**: An AI agent that learns a merchant’s business, monitors transactions, and optimizes performance end-to-end.
- **Global Accounts**: Helps finance and payments teams manage how money moves across their business.
- **Reconciliation**: Automated transaction tracking from checkout to settlement to uncover revenue opportunities and reduce hidden costs.
- **Fallbacks & Network Tokenization**: Features that boost payment success rates and revenue capture.
- **Primer for Partners**: Enables any service to build into Primer and own their integration.

## Market Standing
- **Valuation**: Not publicly disclosed
- **Key Metric**: Total funding raised – $173M (Seed $4.3M, Series A $18.7M, Series B $50M, Series C $100M) [primer.io/about-us]
- **Notable Investors**: Sofina (lead Series C), ICONIQ (lead Series B), Accel, Balderton, RTP Global, Seedcamp, Speedinvest, Tencent, Peak XV Partners
- **Growth Signals**:
  - 200% year-on-year growth in 2024 [primer.io/about-us]
  - Headcount of 128 employees (+25.5% YoY) [linkedin.com]
  - Operating in 30+ countries across 6 continents
  - Processes billions of dollars in payment volume monthly with 99.99% uptime
  - 95%+ of customer payment volume processed reliably

## Competitive Advantages
- **Unified platform**: Replaces the complexity of managing multiple providers with a single integration and control plane
- **AI-native**: AI Companion provides ongoing optimization, monitoring, and incident response
- **Enterprise-grade security**: PCI-1 & GDPR compliant, SOC2 Type-2 certified
- **Proven scale**: Trusted by global merchants with billions in volume and 99.99% uptime

## Strategic Focus
- Deepen presence in APAC (2024–2025 expansion)
- Continue building AI-native infrastructure for the next generation of payments and finance teams
- Grow the Primer for Partners ecosystem
- Scale the platform with new features like Global Accounts and Reconciliation

## Why Work Here
- **Remote-first since day one**: Team works from 30+ countries with flexible hours; teams align on overlap for collaboration.
- **Culture**: Low ego, high standards, strong ownership, and generous knowledge sharing. Proud of a 4.2 Glassdoor rating.
- **Benefits**: Premium private health insurance (AVIVA in UK; Allianz, Bupa globally); competitive location-based compensation plus equity; wellness and training budget.
- **Growth**: Significant autonomy and opportunities to shape your own path; average hiring process of 27 days.
- **Global retreats**: Company-wide retreats and team workations to bring people together in person.

## Sources
1. [primer.io](https://www.primer.io/)
2. [primer.io/careers](https://primer.io/careers)
3. [primer.io/about-us](https://primer.io/about-us)
4. [linkedin.com](https://uk.linkedin.com/company/primerapi)
5. [jobs.ashbyhq.com](https://jobs.ashbyhq.com/primer.io)

## Other roles at Primer.io

- [Account Executive - Mid-Market - France](https://feeny.ai/job/account-executive-mid-market-france-primer-io-france-b7f7gbs4j0fa) — France
- [Enterprise Account Executive - East](https://feeny.ai/job/enterprise-account-executive-east-primer-io-new-york-vtcgddptce28) — New York, NY
- [Senior Manager - Pre Sales](https://feeny.ai/job/senior-manager-pre-sales-primer-io-united-kingdom-tqxkb12gctrb) — United Kingdom
- [Head of Sales - EMEA](https://feeny.ai/job/head-of-sales-emea-primer-io-united-kingdom-fm0qynqfr21d) — United Kingdom
- [Senior DevEx Engineer - Infrastructure](https://feeny.ai/job/senior-devex-engineer-infrastructure-primer-io-united-kingdom-s4hpvfr60en4) — United Kingdom
- [Senior Engineer, Fullstack - Growth](https://feeny.ai/job/senior-engineer-fullstack-growth-primer-io-poland-vcscm5a1495c) — Poland
- [Senior Engineer, Backend - Orchestration](https://feeny.ai/job/senior-engineer-backend-orchestration-primer-io-poland-r9828xtxvszb) — Poland
- [Senior Machine Learning Engineer](https://feeny.ai/job/senior-machine-learning-engineer-primer-io-united-kingdom-vf2zpa3gbqqw) — United Kingdom
- [Senior ML Engineer](https://feeny.ai/job/senior-ml-engineer-primer-io-united-kingdom-1kc84kdmqr0w) — United Kingdom
- [Product Marketing Associate](https://feeny.ai/job/product-marketing-associate-primer-io-united-kingdom-ewy4ttgd1tg5) — United Kingdom