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BJAK

Backend Developer

BJAK

. Build backend services and APIs for onboarding, accounts, payments, cards, transfers, rewards, travel, FX, KYC, and risk flows.

Posted 7/10/2026full-timeRemote • 🇺🇸 United StatesMid-LevelSeniorWebsite

About the role

Key responsibilities & impact
  • Build backend services and APIs for onboarding, accounts, payments, cards, transfers, rewards, travel, FX, KYC, and risk flows.
  • Design reliable systems that can support real customer transactions, operational workflows, and future financial products.
  • Integrate with internal systems, financial partners, payment providers, AI services, and third-party platforms.
  • Own backend quality across reliability, security, latency, observability, data integrity, and incident handling.
  • Work with product, frontend, mobile, and AI teams to launch features quickly and safely.
  • Improve existing systems by simplifying flows, removing manual work, and automating repeatable processes.

Requirements

What you’ll need
  • Strong backend engineering experience in production systems.
  • Good understanding of APIs, databases, authentication, authorization, queues, jobs, events, and integrations.
  • Experience building services used by real customers or internal operations at meaningful scale.
  • Strong debugging, reliability, security, and data quality mindset.
  • Able to make practical trade-offs between speed, correctness, scalability, and maintainability.
  • Fintech, payments, banking, wallet, KYC, fraud or risk experience is a strong plus, but not required if fundamentals are strong.

Benefits

Comp & perks
  • Health insurance
  • Professional development
  • Flexible work arrangements

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools
Backend EngineeringAPI DevelopmentDatabase ManagementDebuggingData QualityAuthenticationAuthorizationEvent HandlingService IntegrationOperational Workflows
Soft Skills
Problem-SolvingCollaborationTrade-Off Decision Making