Blockchain Backend Engineer

Design the future architecture of one of Europe's most innovative banking networks while empowering engineers to do their best work.

Role Summary

We are looking for a Blockchain Java Backend Engineer to help build the next generation of digital asset, tokenization, and distributed financial infrastructure capabilities within ING.

You will design and develop scalable backend services, APIs, integration layers, event-driven applications, and cloud-native platforms that support emerging digital asset and distributed ledger initiatives.

While prior blockchain experience is welcome, it is not required. We are primarily looking for strong software engineers who are passionate about building resilient, secure, and high-performing distributed systems and are interested in expanding into the blockchain and digital assets domain.

Work Model

At ING Hubs Türkiye, flexibility is more than a benefit—it's part of how we work.

Our hybrid way of working is designed to balance collaboration, innovation, and personal flexibility. Team members typically come together at our Vadistanbul office for two days per week during three weeks of the month, while one week each month is fully remote.

We also provide additional flexibility throughout August with remote working opportunities, allowing colleagues to remain productive while staying connected with their teams.

As part of a globally distributed organization, you'll collaborate with colleagues across multiple ING locations and contribute to solutions used across the bank.

About the Team

You will join an international technology organization where ownership, knowledge sharing, collaboration, and engineering excellence are at the heart of everything we do.

Our teams design and deliver critical technology platforms that support ING's digital transformation journey. We believe scalable architectures, strong engineering practices, automation, and continuous learning are essential for delivering reliable solutions at scale.

About You

Minimum Qualifications

• 5+ years of experience in software engineering, solution design, or architecture
• Strong stakeholder management across business and technology domains
• Excellent communication, presentation, analytical, and problem-solving skills
• Experience working in Agile organizations
• Bachelor’s degree in Computer Engineering, Software Engineering, or a related discipline
• Fluent English (C1 or above)

Technical Skills

Strong experience with

• REST APIs and microservices

Experience with

• Event-driven architectures, Kafka, RabbitMQ (or similar messaging technologies)
• SQL and NoSQL databases
• CI/CD pipelines and Git-based development workflows

Good understanding of

• Distributed systems
• System integration
• Scalability patterns
• Design, build, and operate scalable backend services, APIs, and cloud-native microservices
• Develop integration solutions between banking systems and digital asset platforms
• Build secure, resilient, and highly available services supporting financial transactions
• Contribute to architecture decisions covering scalability, performance, security, reliability, and maintainability

Digital Assets & Distributed Systems

• Support distributed financial platforms and digital asset initiatives
• Contribute to tokenization, blockchain, settlement, custody, and servicing capabilities
• Learn and apply distributed ledger technologies where appropriate
• Collaborate with blockchain engineers and architects
• Build automated testing frameworks and CI/CD pipelines
• Apply clean code and software craftsmanship principles
• Improve observability, monitoring, logging, and operational resilience
• Support production environments, incident resolution, and reusable platform capabilities

Security & Compliance

• Apply security-by-design principles and secure coding standards
• Collaborate with security, risk, and compliance teams
• Ensure regulatory and internal control requirements are addressed throughout delivery
• Work in Agile squads with Product Owners, Architects, Business Analysts, SREs, and Security Specialists
• Collaborate with global ING engineering teams
• Contribute to engineering communities, demos, knowledge sharing, and innovation initiatives

Don't meet every single requirement? Don't let that hold you back. Studies show many talented professionals hesitate to apply unless they meet every qualification. If you're excited about this role and believe you can make an impact, we'd love to hear from you.

At ING Hubs Türkiye, we