About this role
In this role, you will:
- Design and develop an orchestration layer between core banking, custody and wallet providers, and token issuers
- Build and maintain containerised back-end services using .NET and Python, with infrastructure defined through Terraform
- Design secure API integrations using REST, webhooks, mutual TLS and OAuth 2.0
- Integrate banking and payment flows with custody platforms, digital wallets and blockchain-based services
- Design transaction flows for Ethereum and ERC-20 tokens, including gas management, transaction finality and operational exception handling
- Establish secure approaches to cryptographic key management using technologies and standards such as HSM, MPC, PKCS#11 and hierarchical key derivation
- Support payment integration based on SEPA Instant and ISO 20022, including pacs.008 messages
- Embed AML and KYC screening, Travel Rule controls and on-chain analytics into relevant transaction flows
- Build secure, observable and resilient services on Kubernetes and Google Cloud, including multi-zone disaster recovery
- Apply engineering practices in line with MiCAR, DORA and SEB’s security and operational requirements
To thrive in this role, we believe you have:
- Strong hands-on experience developing backend services using .NET.
- Experience building API integrations and containerised services, with practical knowledge of Python and Terraform.
- Experience with REST APIs, webhooks and secure authentication mechanisms such as mutual TLS and OAuth 2.0.
- Experience with payments, banking integrations or other business-critical transaction platforms where security, traceability and resilience are essential.
- The ability to translate business and technical requirements into robust solutions and collaborate effectively across technology, product, security and compliance teams.
It’s a plus if you have experience with:
- Blockchain and digital assets: Ethereum transactions, ERC-20 tokens, gas management, transaction finality or Solidity.
- Cryptographic security and key management: HSM, MPC, PKCS#11 or key derivation standards such as SLIP-0010 and BIP32.
- Payments and financial messaging: SEPA Instant and ISO 20022, particularly pacs.008.
- Custody platforms: Fireblocks, Ripple, Taurus, Zodia or similar.
- Compliance and regulation: AML/KYC screening, the Travel Rule, on-chain analytics tools such as Chainalysis, Elliptic or TRM Labs, and awareness of MiCAR and DORA.
- Cloud infrastructure and resilience: Kubernetes, Google Cloud and multi-zone disaster recovery.
We value clear communication, a pragmatic approach to problem-solving and the ability to work in a domain where technology, standards and regulatory expectations continue to evolve.
You have a genuine interest in digital assets and AI, take ownership of your professional development and use AI tools thoughtfully to improve your development workflow and productivity.
What we offer:
We offer many experiences and benefits to our employees, and there is nuance to every individual’s career experience, but the elements that define the core of our offering are:
- The opportunity to contribute to the development of SEB’s digital-assets platform and its first blockchain-based product
- Professional development in an emerging technology area with direct relevance to the future of financial services
- Insight into stable coins, digital wallets, blockchain integration and institutional financial markets
- A dynamic, professional and multicultural environment
- An empowering and inclusive workplace culture
- A hybrid workplace setup