An innovative fintech organisation in Estonia is seeking a Principal Open Banking Engineer to lead the engineering of secure, scalable financial-data and account-access capabilities across modern European banking ecosystems.

This is a senior technical role for an engineer who understands the complexity of connecting financial institutions, APIs, payment infrastructure, identity systems, and customer-facing applications. You will work closely with architecture, product, security, compliance, and engineering teams to build reliable financial connectivity at scale.

Key Responsibilities

• Design and develop secure open-banking services and financial-data integrations.
• Build resilient API integrations with banks and financial-service providers.
• Develop scalable services for account information, payment initiation, consent, and financial-data exchange.
• Establish robust authentication, authorisation, consent, and access-control mechanisms.
• Design solutions for API reliability, rate limiting, error handling, monitoring, and service continuity.
• Work with product teams to translate customer requirements into technically sound financial integrations.
• Investigate complex integration and production issues and drive permanent solutions.
• Establish engineering standards for testing, observability, security, and maintainability.
• Collaborate with compliance and security teams on technology requirements.
• Mentor senior engineers and contribute to architectural decisions across the platform.

Candidate Profile

• 8+ years of software-engineering experience, with significant experience in fintech, banking, payments, or financial APIs.
• Strong backend engineering skills in Java, Kotlin, Go, Python, or comparable technologies.
• Deep understanding of REST APIs, OAuth, authentication, distributed systems, and event-driven architectures.
• Experience working with financial APIs or open-banking environments.
• Strong knowledge of cloud infrastructure, databases, CI/CD, and observability.
• Excellent technical communication and architectural problem-solving skills.

Technical Environment

Cloud-native services, REST APIs, OAuth-based authentication, microservices, event streaming, relational databases, containerisation, automated testing, CI/CD, and real-time monitoring.

Why This Opportunity

You will help build critical financial connectivity infrastructure serving modern digital-finance products across European markets.

Ideal Candidate: A highly experienced engineer who combines deep software-engineering expertise with a strong understanding of financial APIs and the reliability requirements of regulated financial technology.

Are you interested in this position?

Apply by clicking on the “Apply Now” Button below!

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