Blockchain Engineer

ING Hubs B.V. Turkiye; Fatih; Hybrid; TRY 350,000 - 550,000; Full time

Benefits offered by this job

Health insurance

Flexible hybrid model

Remote August opportunities

Training budget

Job summary

ING Hubs Türkiye is seeking a Blockchain Engineer to design and build scalable backend services for digital asset capabilities. You will work on wallet management, asset operations, custody workflows, and external network integrations, bridging banking systems with blockchain solutions.

The role emphasizes strong Java engineering, with experience in blockchain concepts, microservices, and modernDevOps practices.

Qualifications

• 5+ years of software engineering/architecture experience

Responsibilities

• Backend design and development of enterprise-grade Java services

Skills

Java

Kotlin

Spring Boot REST APIs

Microservices

Event-driven

Kafka/RabbitMQ

SQL/NoSQL

Docker

Kubernetes

CI/CD

Git workflows

Distributed systems

API design

Scalability patterns

Fluent English

Education

Bachelor's degree in Computer Engineering, Software Engineering, or related discipline

Tools

Docker

Kubernetes

Job description

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 Engineer to join ING's Digital Asset Services (DAS) organization and help build the next generation of digital asset capabilities.

This role combines strong backend engineering expertise with practical knowledge of blockchain technologies.

The successful candidate will design and develop scalable services supporting wallet management, digital asset operations, custody workflows, and integrations with external blockchain networks and custody platforms.

The ideal candidate is fundamentally a strong Java engineer who understands blockchain concepts and can bridge traditional banking systems with emerging digital asset ecosystems.

Work Model At ING Hubs Türkiye, flexibility is more than a benefit-is 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 roles
• Strong stakeholder management experience across business and technology domains
• Excellent communication and presentation skills
• Strong analytical and problem-solving capabilities
• Experience working in Agile organizations
• Bachelor's degree in Computer Engineering, Software Engineering, or a related discipline
• Fluent English communication skills (C1 level or above)

Technical Skills

• Strong experience in:
• Java (preferred)
• Kotlin
• Spring Boot REST APIs
• Microservices Architecture
• Experience with:
• Event-driven architectures
• Kafka RabbitMQ or similar messaging technologies
• SQL and NoSQL databases
• Containerization (Docker)
• Kubernetes
• CI/CD pipelines
• Git-based development workflows
• Good understanding of:
• Distributed systems
• System integration
• API design
• Scalability patterns

Roles and Responsibilities

• Backend Engineering Design and develop enterprise-grade backend services using Java.
• Build APIs and microservices supporting digital asset products.
• Develop scalable and resilient systems aligned with banking standards.
• Ensure high availability, security, performance, and maintainability.
• Blockchain Development Implement blockchain-related business logic and workflows.
• Develop components supporting: Smart contract interactions Minting and burning processes Asset transfer flows Wallet management capabilities Integrate external blockchain networks into ING's digital asset ecosystem.
• Platform Integration Build integrations with digital asset custody and wallet providers.
• Develop connectivity with blockchain infrastructure and third-party services.
• Collaborate on SaaS blockchain platform implementation initiatives.
• Security & Reliability Follow secure coding and software engineering best practices.
• Participate in architecture reviews and technical design discussions.
• Contribute to operational readiness and production support activities.
• Support compliance, audit, and security requirements.
• Collaboration Work within cross-functional agile teams.
• Partner with Architects, DevOps Engineers, Security Specialists, Product Owners, and Blockchain Operations professionals.
• Support technical mentoring and knowledge sharing across engineering teams.

Equal Opportunity 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.

What We Offer at ING Hubs Türkiye

At ING Hubs Türkiye, we believe that your work should be fulfilling in every way. We pay attention to even the smallest details to ensure that your experience is rewarding.

• Be Yourself, Be an ING'er
• Welcome Leave: Enjoy 14 days of welcome leave, even in your first year
• Self-driven career opportunities
• Challenging projects and continuous learning opportunities
• Flexible hybrid working model
• Remote working opportunities throughout August
• Training budget and Udemy partnership
• Global mobility and international career opportunities
• Comprehensive health insurance for you and your family
• Private Pension Plan
• Meal Card
• Transportation Allowance
• MultiSport Membership
• English Language Development Support
• Innovation culture powered by PACE methodology
• Regular communication activities and celebrations

About ING

With 65,000 employees and operations in approximately 40 countries, there is no shortage of opportunities for people with initiative who want to help people take a step ahead in life and in business. Do you want to work at the cutting edge of what's possible and at the same time ensure you work with integrity and hold the customer's interests at heart? Do you want to be surrounded by progressive, inspiring, diverse and supportive colleagues? Then there is no better place to invest your talents than at ING. Join us.

We’re a global bank with a strong European base, and our more than 60,000 colleagues serve around 38 million customers and corporate clients in over 40 countries. Joining ING means working with friendly and collaborative people towards making a positive impact on people and planet. We believe in empowering the people around us and our customers to stay a step ahead. Working here means having the autonomy to drive progress, helping to create superior customer value and contributing to our ambition of putting sustainability at the heart of everything we do. Here, we’re more than just a workplace – we’re a community of innovators, problem-solvers, and forward-thinkers, dedicated to making a real impact. Whether you’re just starting your career or seeking the next big challenge, we have opportunities that will inspire and push you to grow. Your future at ING starts with one application.