Bjak

Backend Developer (Spain)

Bjak
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3 months ago
Barcelona, SpainSenior

Responsibilities

  • Build backend services and APIs for onboarding, accounts, payments, cards, transfers, rewards, travel, foreign exchange, KYC, and risk flows.
  • Design reliable systems supporting 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.
  • Collaborate with product, frontend, mobile, and AI teams to launch features quickly and safely.
  • Improve existing systems by simplifying workflows, removing manual work, and automating repeatable processes.

Requirements

  • Strong backend engineering experience with production systems.
  • 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 focus on debugging, reliability, security, and data quality.
  • Ability to balance speed, correctness, scalability, and maintainability.
  • Fintech, payments, banking, wallet, KYC, fraud, or risk experience is preferred but not required.
  • Strong English communication skills are required.
  • Candidates must already be based in Spain.

Benefits

  • Remote work arrangement for candidates based in Spain.
  • English is the main working language across global teams.
  • Fast interview process aiming to complete interviews and make an offer within one week for strong candidates.

Categories

Bjak

About Bjak

201-500 employees

Bjak builds an online insurance marketplace for consumers in Malaysia and Southeast Asia, enabling comparison and purchase of car, health, life, and travel policies. Its business model is aggregator-based, earning commissions and fees from insurers and partners while streamlining digital applications and renewals. Founded in 2019 and headquartered in Selangor, it is privately held and is expanding from insurance comparison into broader fintech services via a planned finance super app.

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