Senior Technical Specialist

HCL Technologies Limited; Greater London; On-site; GBP 85,000 - 110,000; Full time

Job summary

HCLTech is seeking a Backend/Blockchain Engineer to design and deliver Java/Kotlin microservices and on‑chain workflows for regulated digital asset products. You will integrate with custody, wallet providers, node services, and traditional core banking systems while upholding high security and reliability standards.

The role requires hands‑on blockchain experience, 5+ years in software engineering, and a background in financial services or fintech.

Qualifications

• 5+ years in software engineering, solution design or architecture, including production ownership
• Hands-on experience with blockchain protocols
• Background in financial services, payments or fintech — or a demonstrable grasp of how regulated money movement works
• Strong stakeholder management across business and technology
• Bachelor's in Computer Science, Software Engineering or equivalent

Responsibilities

• Backend engineering — Design and ship enterprise‑grade Java/Kotlin microservices and APIs that meet bank‑grade availability, latency and security standards.
• Blockchain development — Implement on‑chain business logic and workflows: smart contract interactions, mint/burn, asset transfers, wallet lifecycle and key management flows.
• Integration — Connect the platform to custody providers, wallet infrastructure, node providers and SaaS blockchain platforms; integrate with core banking, payments and ledger systems.
• Security & resilience — Apply secure coding practices, participate in architecture and threat reviews, and support audit, compliance and production readiness.
• Collaboration — Work in a cross‑functional agile squad with architects, DevOps, security, product owners and blockchain operations; mentor engineers and share knowledge.

Skills

Backend engineering

Blockchain development

Integration

Security & resilience

Collaboration

Education

Bachelor's in Computer Science or Software Engineering

Tools

Kafka

RabbitMQ

SQL

NoSQL

Docker

Kubernetes

CI/CD

Git workflows

Job description

You'll build the backend and blockchain layer behind regulated digital asset products — tokenised deposits, custody, stablecoin rails and on‑chain settlement. This sits at the intersection of core banking engineering and public/permissioned blockchain infrastructure.

What you'll do

• Backend engineering — Design and ship enterprise‑grade Java/Kotlin microservices and APIs that meet bank‑grade availability, latency and security standards.
• Blockchain development — Implement on‑chain business logic and workflows: smart contract interactions, mint/burn, asset transfers, wallet lifecycle and key management flows.
• Integration — Connect the platform to custody providers, wallet infrastructure, node providers and SaaS blockchain platforms; integrate with core banking, payments and ledger systems.
• Security & resilience — Apply secure coding practices, participate in architecture and threat reviews, and support audit, compliance and production readiness.
• Collaboration — Work in a cross‑functional agile squad with architects, DevOps, security, product owners and blockchain operations; mentor engineers and share knowledge.

Key Responsibilities

• 5+ years in software engineering, solution design or architecture, including production ownership
• Hands‑on experience with blockchain protocols
• Background in financial services, payments or fintech — or a demonstrable grasp of how regulated money movement works
• Strong stakeholder management across business and technology
• ​Bachelor's in Computer Science, Software Engineering or equivalent

Technical

• Solid: event‑driven architecture, Kafka, RabbitMQ, SQL and NoSQL, Docker, Kubernetes, CI/CD, Git workflows
• Good understanding of distributed systems, API design, system integration and scalability patterns

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.

Skill Requirements

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.

Other Requirements

• 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.

At HCLTech, you'll supercharge your potential. You'll find your career. And you'll find your spark. All at a place that knows that helping its customers stay on top starts by putting its people first.

HCLTech is a global technology company, home to more than 223,000 people across 60 countries, delivering industry‑leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending June 2026totaled $14.8billion.