Job Role: Senior DLT / Smart Contract Engineering Lead (Capital Markets & Banking)

Role Summary:

Lead the design and delivery of enterprise-grade blockchain solutions within regulated financial environments. This role focuses on smart contract engineering, tokenized securities, digital cash integration, and secure, compliant DLT platforms for capital markets, payments, and settlement systems.

Hybrid working:

The places that you work from day to day will vary according to your role, your needs, and those of the business; it will be a blend of Company offices, client sites, and your home; noting that you will be unable to work at home 100% of the time

Job Role:

Blockchain & Solution Delivery

Design and implement distributed ledger solutions for:

Capital markets
Payments
Custody and settlement systems

Deliver production-grade blockchain systems for:

Banks
Financial Market Infrastructures (FMIs)
Exchanges and regulated fintechs

Integrate on-chain logic with off-chain enterprise systems:

Core banking platforms
Central Securities Depositories (CSDs)
Payment rails
Regulatory reporting systems

Smart Contract Engineering

Develop, test, audit, and deploy secure Solidity-based smart contracts
Implement advanced contract logic for:

Asset issuance, transfer, and redemption
Lifecycle event management
Settlement workflows (DvP, escrow, atomic swaps)

Design and implement:

Token standards (fungible, NFT, hybrid securities)
Gas-optimized smart contract architectures
Upgradeable contract patterns

Tokenisation & Digital Cash

Build and manage tokenisation frameworks for:

Securities and financial instruments
Tokenized assets across lifecycle stages

Work with digital cash instruments:

Stablecoins
Tokenized bank deposits
On-chain cash leg representations for DvP

Ensure compliance with regulatory requirements for on-chain financial products

Blockchain Platforms & Standards

Work across both public and permissioned DLT platforms:

Ethereum
Hyperledger Besu
Corda

Apply enterprise blockchain standards for:

Privacy
Interoperability
Tokenized securities markets

Security, Custody & Cryptography

Ensure secure smart contract design by addressing:

Reentrancy attacks
Access control vulnerabilities
Precision/overflow issues

Design custody and wallet solutions using:

MPC (Multi-Party Computation)
HSM-backed signing
Policy-based wallet controls

Implement privacy-preserving mechanisms:

Permissioned access models
Selective disclosure
Zero-knowledge proof (ZKP) concepts

Cloud, DevOps & Engineering Excellence

Build and deploy cloud-native applications on:

AWS, Azure, or GCP

Operate containerized systems using:

Kubernetes
Microservices architectures

Implement DevSecOps practices:

CI/CD pipelines for smart contracts and backend services
Automated testing and security scanning
Infrastructure as Code (IaC)

Ensure production reliability through:

Monitoring (Prometheus, Grafana)
Observability frameworks
Secure secrets and key management

Job Skills

Experience

12+ years of software engineering experience
4–6+ years of hands-on smart contract development
Proven experience in regulated environments (banks, FMIs, exchanges, fintechs)
Strong exposure to capital markets and post-trade systems

Core Technical Skills

Solidity smart contract development (advanced level)
Ethereum, Hyperledger Besu, Corda
Token standards (ERC-20, ERC-721, ERC-1155, hybrid models)
Smart contract lifecycle management

Financial Domain Knowledge

Securities lifecycle management
Clearing and settlement processes
Corporate actions and custody
Delivery vs Payment (DvP) mechanisms

Security & Cryptography

Smart contract security best practices
MPC, HSM, and wallet architecture
Zero-knowledge proofs (ZKP)
Selective disclosure and privacy-preserving architectures

Cloud & DevOps

AWS / Azure / GCP
Kubernetes and containerization
CI/CD pipelines
Infrastructure as Code
Monitoring tools (Prometheus, Grafana)

System Integration

Core banking integration
Payment systems and rails
Regulatory reporting platforms
Hybrid on-chain/off-chain architectures.

We are a Disability Confident Employer:

Capgemini is proud to be a Disability Confident Employer (Level 2) under the UK Government’s Disability Confident scheme. As part of our commitment to inclusive recruitment, we will offer an interview to all candidates who:

Declare they have a disability, and
Meet the minimum essential criteria for the role.
Please opt in during the application process.

Make It Real (what does it mean for you):

You’d be joining an accredited Great Place to work for Wellbeing in 2024. Employee wellbeing is vitally important to us as an organisation. We see a healthy and happy workforce a critical component for us to achieve our organisational ambitions.
To help support wellbeing we have trained ‘Mental Health Champions’ across each of our business areas, and we have invested in wellbeing apps such as Thrive and Peppy.
You will be empowered to explore, innovate, and progress. You will benefit from Capgemini’s ‘learning for life’ mindset, meaning you will have countless training and development opportunities from thinktanks to hackathons, and access to 250,000 courses with numerous external certifications from AWS, Microsoft, Harvard ManageMentor, Cybersecurity qualifications and much more.
You will be joining one of the World’s Most Ethical Companies®, as recognised by Ethisphere® for 13 consecutive years. We live our values by making ethical business choices every day. Working ethically is at the centre of our culture at Capgemini, meaning you will be helping to create a future we can all be proud of.

Why you should consider Capgemini:

Growing clients’ businesses while building a more sustainable, more inclusive future is a tough ask. When you join Capgemini, you’ll join a thriving company and become part of a collective of free-thinkers, entrepreneurs and industry experts. We find new ways technology can help us reimagine what’s possible. It’s why, together, we seek out opportunities that will transform the world’s leading businesses, and it’s how you’ll gain the experiences and connections you need to shape your future. By learning from each other every day, sharing knowledge, and always pushing yourself to do better, you’ll build the skills you want. You’ll use your skills to help our clients leverage technology to innovate and grow their business. So, it might not always be easy, but making the world a better place rarely is.

About Capgemini:

Capgemini is an AI-powered global business and technology transformation partner, delivering tangible business value. We imagine the future of organisations and make it real with AI, technology and people. With our strong heritage of nearly 60 years, we are a responsible and diverse group of 420,000 team members in more than 50 countries. We deliver end-to-end services and solutions with our deep industry expertise and strong partner ecosystem, leveraging our capabilities across strategy, technology, design, engineering and business operations. The Group reported 2024 global revenues of €22.1 billion.
Make it real | www.capgemini.com