Blockchain Backend Engineer

ING Hubs Türkiye; Fatih; Hybrid; TRY 420,000 - 700,000; Full time

Benefits offered by this job

Welcome Leave 14 days

Health Insurance

Hybrid working model

Training budget & Udemy partnership

Global mobility opportunities

Job summary

ING Hubs Türkiye is seeking a Blockchain Java Backend Engineer to design scalable backend services and APIs for digital asset and distributed financial infrastructure. You will develop microservice-based applications, enable integration with internal banking systems, and contribute to resilient, secure platforms in a hybrid work model.

You should have 5+ years in software engineering, strong communication, and a background in agile environments.

Qualifications

• 5+ years of software engineering, solution design, or architecture roles.
• Experience with Agile organizations.
• Fluent English communication skills (C1 level or above).
• Bachelor's degree in Computer Engineering, Software Engineering, or a related discipline.

Responsibilities

• Design, build, and operate scalable backend services and APIs.
• Develop microservice-based applications on cloud-native platforms.
• Create robust integration solutions between internal banking systems and digital asset platforms.
• Build secure, resilient services handling financial transactions and processes.
• Participate in architecture discussions on scalability, performance, and security.

Skills

Java

Kotlin

Spring Boot

REST APIs

Microservices

Event-driven

Kafka

RabbitMQ

SQL

NoSQL

Docker

Kubernetes

CI/CD

Git workflows

Distributed systems

API design

Agile

Education

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

Tools

Docker

Kubernetes

Kafka

RabbitMQ

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 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 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 & Platform Development

• Design, build, and operate scalable backend services and APIs.
• Develop microservice-based applications running on cloud-native platforms.
• Create robust integration solutions between internal banking systems and emerging digital asset platforms.
• Build highly available, secure, and resilient services handling financial transactions and business-critical processes.
• Participate in architecture discussions covering scalability, performance, security, reliability, and maintainability.

Distributed Systems & Digital Assets

• Support the design and implementation of distributed financial platforms.
• Contribute to digital asset, tokenization, and blockchain-related initiatives.
• Work on transaction workflows, settlement processes, custody integrations, and digital asset servicing capabilities.
• Learn and apply distributed ledger technologies where appropriate.
• Collaborate with blockchain engineers and architects on selected use cases.

Engineering Excellence

• Build automated testing frameworks and CI/CD pipelines.
• Apply clean code principles and software craftsmanship practices.
• Improve observability, monitoring, logging, and operational resilience.
• Support production environments and participate in incident resolution activities.
• Contribute to reusable engineering patterns and platform capabilities.

Security & Compliance

• Implement security-by-design principles.
• Apply secure coding standards and software development best practices.
• Work closely with security, risk, and compliance teams.
• Ensure regulatory and internal control requirements are considered throughout solution delivery.

Collaboration

• Work in Agile squads with Product Owners, Architects, Business Analysts, SREs, and Security Specialists.
• Collaborate with global ING engineering teams.
• Share knowledge and contribute to engineering communities, demos, and innovation initiatives.

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 AugustTraining 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?