Backend Engineer – Partner Flow

Overview

As a Back End Engineer on the Partner Flow team, you shape how thousands of small businesses access iwoca financing through embedded flows and the Lending API. You will own features end-to-end, collaborating with partners and internal stakeholders to create robust, scalable systems. Your work will focus on improving partner onboarding, conversion through experiments, and delivering impactful solutions for partner-referred customers. This role offers autonomy, cross-functional collaboration, and the chance to advance AI-assisted development in a fast-growing fintech environment.

Pay / Benefits

• Flexible working hours
• Medical insurance (Vitality)
• Private GP service for you and dependents
• 25 days holiday + birthday day off
• Sabbatical after four years
• Employee equity incentive

Responsibilities

• Own features and projects from scoping and design through to production
• Collaborate with other engineers to meet team goals and work independently on assigned problems
• Design, build, and maintain scalable, robust systems for partner integrations
• Deliver new functionality to onboard partners and improve partner/customer funnel
• Run experiments (RCTs) and optimise conversion with embedded data science insights
• Document code, processes, and architectures to improve maintainability
• Collaborate with partners and stakeholders to design effective solutions and use data to guide decisions
• Contribute to AI-assisted development with a focus on correctness, performance and security

Key requirements

• Experience designing and building scalable back-end systems, ideally in Python
• Experience with relational databases, ideally PostgreSQL
• Experience building and maintaining APIs that are easy to use, reliable, and well-documented
• Experience managing projects end to end from problem understanding to solution delivery
• Pragmatism in balancing delivery speed with long-term system health
• Clear, concise written and verbal communication with outcomes focus
• A genuine team player who supports teammates and the team’s success
• AI fluency and experience using AI coding tools to accelerate delivery

• collaboration
• outcome-focused
• clear communication
• Python
• PostgreSQL
• APIs

…