Backend Software Engineer – AI Neobank App

BJAK

Backend Software Engineer building core systems for BJAK's AI Neobank app. Developing reliable APIs and workflows to scale across financial services and partners.

Posted 7/15/2026full-time🇬🇧 United KingdomMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in backend engineering, focusing on building scalable services and APIs for regulated financial products. Proficient in system design, security, and integrating third-party systems while collaborating effectively with cross-functional teams.

Highest-signal resume keywords

Backend Engineering ExperienceAPI DevelopmentSystem DesignFintech ExperienceIntegration with Third-Party Systems

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

APIsDatabasesProduction DebuggingScalable ServicesSystem ReliabilityData QualityOperational Edge CasesSecurity

Soft Skills

CollaborationPractical Trade-Offs

Tools & Technologies

Payment GatewaysData Providers

Industry Keywords

FintechPaymentsInsuranceLendingBankingRegulated Products

About the role

Key responsibilities & impact

Build backend services, APIs and workflows for the AI Neobank app.
Support products across insurance, payments, wallet, savings, investing, travel and financial services.
Design reliable systems for user accounts, transactions, partner integrations, reconciliation, notifications and operations.
Work with product and mobile teams to ship customer-facing journeys quickly.
Integrate with banks, payment gateways, insurers, data providers and other partners.
Improve system reliability, observability, security and performance.
Build systems that are practical, auditable and ready for regulated financial products.

Requirements

What you’ll need

3+ years of backend engineering experience.
Strong fundamentals in APIs, databases, system design and production debugging.
Experience building scalable services and integrating third-party systems.
Good understanding of security, reliability, data quality and operational edge cases.
Able to make practical trade-offs between speed, quality and risk.
Comfortable working with product, mobile, operations and business teams.
Experience in fintech, payments, insurance, lending, banking or regulated products is a strong advantage.

Benefits

Comp & perks

Flexible working arrangements
Professional development opportunities