As a Blockchain Security Ops Engineer , you will help design, implement, and secure ING’s digital asset technology capabilities. You will work on security-critical components such as wallet infrastructure, key management, cryptographic controls, custody models, smart contract security, transaction authorization, secure signing, tokenization platforms, and blockchain integrations.

This is a hands-on engineering role for someone who understands both cyber security and digital asset technology. You will collaborate with digital asset engineers, blockchain engineers, architects, cyber security teams, risk, compliance, legal, product owners, and global technology squads.

Your mission is to make sure ING’s digital asset platforms are secure by design, resilient by default, auditable, compliant, and ready for production in a regulated banking environment.

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
• 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 background in cyber security, secure software engineering, platform security, or cryptographic systems.
• Understanding of blockchain and digital asset fundamentals, including: Wallets and addresses , Public/private key cryptography, Digital signatures, Transaction signing, Smart contracts, Tokens, Blockchain nodes, Custody models
• Experience with secure coding, threat modelling, vulnerability management, penetration testing, or security architecture.
• Familiarity with APIs, microservices, event-driven architecture, cloud platforms, containers, Kubernetes, CI/CD, and infrastructure-as-code.
• Understanding of IAM, privileged access management, secrets management, encryption, logging, monitoring, and audit trails.

Preferred Skills

• Experience in banking, financial services, payments, capital markets, securities, custody, or wholesale banking.
• Experience with digital assets, tokenization, stablecoins, CBDCs, tokenized deposits, or blockchain-based settlement.
• Hands-on experience with HSMs, MPC platforms, wallet infrastructure, or custody technology providers.
• Experience with smart contract security tools such as Slither, Mythril, Foundry, Echidna, or similar tools.
• Knowledge of Ethereum, EVM chains, Hyperledger Besu, Hyperledger Fabric, Corda, Quorum, or permissioned blockchain networks.
• Experience with cryptographic protocols, secure enclaves, threshold signatures, distributed key generation, or zero-knowledge proofs.
• Experience with security certifications, standards, and frameworks such as ISO 27001, SOC 2, NIST, CIS, OWASP, or cloud security benchmarks.
• Security certifications such as CISSP, CCSP, OSCP, GIAC, CEH, cloud security certifications, or blockchain security certifications are a plus.

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. Apply today.