Our partner is looking for a Tech Lead (Backend): Billing & Fees based in Spain. This is an opportunity to lead the technical evolution of a critical billing platform within a growing financial technology environment. You will shape the architecture and roadmap for services that manage fee configuration, transaction calculations, invoicing, adjustments, and reconciliation. The role focuses on replacing manual processes with automated, scalable infrastructure that supports increasingly complex commercial agreements and high transaction volumes. You will combine hands-on backend engineering with technical leadership, guiding architecture decisions and mentoring engineers. Working closely with Product, Finance, Commercial, and other engineering teams, you will translate complex financial requirements into reliable software solutions. The position offers a hybrid or remote working approach within an international, distributed environment. Accountabilities
- Own the technical direction, architecture, and engineering roadmap for the Billing & Fees subdomain, ensuring the platform supports evolving commercial models, transaction volumes, and operational requirements.
- Design, develop, and maintain scalable billing services covering fee policy configuration, fee calculation, invoice generation, billing adjustments, and reconciliation.
- Replace manual billing workflows with automated, reliable processes that improve operational efficiency and reduce errors.




- Build and maintain robust data pipelines and integrations across systems such as Snowflake, Salesforce, Ledger, and internal financial services, ensuring accurate data flows from transaction processing through invoicing and reporting.
- Establish engineering practices that protect financial accuracy and auditability, including idempotency, traceability, reconciliation, exception handling, and comprehensive audit trails.
- Collaborate with Product, Finance, Commercial, Back Office, Ledger, Digital Assets, and Fiat teams to translate business requirements into clear technical solutions and reliable integrations.
- Drive operational excellence by establishing standards for observability, monitoring, performance, incident response, and service recovery.
- Set expectations for testing, CI/CD, documentation, and technical debt management to ensure consistent delivery and long-term platform maintainability.
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Requirements:
- At least 7 years of backend software engineering experience, with strong hands-on expertise in Java or Kotlin and Spring Boot.
- Strong knowledge of microservices and event-driven architectures, including technologies such as Kafka and AWS SQS.
- Experience with relational databases such as MySQL or PostgreSQL and caching technologies such as Redis.
- Background working with financially sensitive systems, such as billing, invoicing, payments, ledgers, fee calculation, or reconciliation platforms, where accuracy, consistency, auditability, and reliability are essential.

📌 Tech Lead Java/Spring (España)
🏢 Jobgether
📍 España