Software Engineer (Fintech)

Software Engineer (Fintech)

Primer provides unified infrastructure for global payments, helping finance and payments teams manage visibility, performance, fraud, and disputes through a single platform.

What you will do

• Own dispute automation features end-to-end, including deadline tracking, evidence collection, and response templates.
• Extend dispute lifecycle coverage to additional payment service providers.
• Build components of the rules and signals engine, including velocity rules, blocklists, and device fingerprinting.
• Improve integrations with fraud vendors and help merchants compare and switch between providers.
• Write RFCs and ADRs, make architecture decisions, and work independently with Product and Engineering Management.
• Contribute to backend systems and, where needed, the frontend Dispute Management dashboard.

Requirements

• Recent experience shipping production-ready backend or full-stack software independently from scoping through rollout.
• Ability to write RFCs and make architecture decisions with minimal senior oversight.
• Willingness to transition to Python without previous Python experience.
• Strong testing, observability, and security practices.
• The role involves working in an early-stage team environment with substantial ambiguity and ownership.

Nice to have

• Knowledge of card scheme rules, chargeback workflows, or fraud vendor integrations.
• Experience with webhook-based event systems, rules engines, or orchestration platforms.

Culture & Benefits

• Fully remote work with a globally distributed organization.
• Uncapped holiday with a minimum of 25 days to be taken.
• Workations, an annual company retreat, and coworking space access across major cities.
• Competitive share options and a generous learning budget.
• Equipment for the role and £500 toward a home office setup.
• Private medical insurance and additional location-dependent benefits.

Hiring process

• Introductory call with a Talent Partner.
• Interview with the Hiring Manager followed by a role-contextualized challenge.
• Final values-alignment interview.