Hybrid .NET Solution Developer — Digital Assets & Blockchain

Skandinaviska Enskilda Banken AB; Solna kommun; Hybrid; SEK 900,000 - 1,200,000; Full time

Benefits offered by this job

Hybrid workplace setup

Professional development in emerging技n

Inclusive workplace culture

Multicultural environment

Job summary

Skandinaviska Enskilda Banken AB is seeking a Solution Developer to build the orchestration layer connecting core banking with custody and wallet providers and token issuers. You will design and maintain secure backend services using .NET and Python, with Terraform-driven infrastructure, across Kubernetes and cloud platforms.

You will integrate banking and payment flows, design Ethereum/ERC-20 transaction paths, and ensure security, compliance, and operational resilience in a rapidly evolving

Qualifications

• Proven experience building backend services using .NET.
• Experience with API integrations and containerised services using Python and Terraform.
• Knowledge of REST, webhooks, mutual TLS and OAuth 2.0.
• Background in payments, banking integrations or critical transaction platforms.

Responsibilities

• Design and develop orchestration layer between core banking, custody, wallet providers, and token issuers.
• Build and maintain containerised back-end services using .NET and Python; define infra with Terraform.
• Design secure API integrations with REST, webhooks, mutual TLS and OAuth 2.0.
• Integrate banking and payment flows with custody platforms and digital wallets.
• Design transaction flows for Ethereum and ERC-20 tokens, incl. gas management and finality.
• Establish secure cryptographic key management with HSM, MPC, PKCS#11 and derivation standards.
• Support payment integration based on SEPA Instant and ISO 20022 (pacs.008).
• Embed AML/KYC screening and Travel Rule controls into transaction flows.
• Build secure, observable, resilient services on Kubernetes and Google Cloud with DR.
• Apply engineering practices aligned with MiCAR, DORA and SEB security requirements.

Skills

.NET

Python

Terraform

REST APIs

Webhooks

Mutual TLS

OAuth 2.0

Security engineering

Kubernetes

Google Cloud

Tools

Kubernetes

Google Cloud

HSM

Job description

Skandinaviska Enskilda Banken AB is seeking a Solution Developer to build the orchestration layer connecting core banking with custody and wallet providers and token issuers. You will design and maintain secure backend services using .NET and Python, with Terraform-driven infrastructure, across Kubernetes and cloud platforms.

You will integrate banking and payment flows, design Ethereum/ERC-20 transaction paths, and ensure security, compliance, and operational resilience in a rapidly evolving