Blockchain Engineer

Project overview

Job Description:

Responsibilities

Backend Engineering

Design and develop enterprise-grade Back End 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 client 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.

Skill

Mandatory (Yes/No)

Proficiency Level (1-5)

Java OR Kotlin

Yes

4

SpringBoot

Kafka or RabbitMQ/alternate queuing

SQL OR NoSQL

3

Docker

Kubernetes

Blockchain protocols like Ethereum/Solana/Hyperledger Fabric

Requirements

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 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

Project details

• Start: flexible
• Location: London City of London, UK, GB