Blockchain jobs in Dublin, County Dublin

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Job Type: Permanent
Job Location: Dublin (IFSC - onsite)

Do you have a proven track record in building centralised applications and smart contracts?
Keen to join a global IT company where you can make an impact?

Join TCS as a Web3 Blockchain Engineer!

Careers at TCS: It means more
TCS is a purpose-led transformation company, built on belief. We do not just help businesses to transform through technology. We support them in making a meaningful difference to the people and communities they serve - our clients include some of the biggest brands in the UK and worldwide. For you, it means more to make an impact that matters, through challenging projects which demand ambitious innovation and thought leadership.

• Collaborate with leading lights of industry
• Gain access to endless learning opportunities
• Shape the future of TCS

The Role
We are seeking a Blockchain/Web3 Engineer with strong infrastructure + coding capabilities to build, deploy, and operate blockchain and Web3 systems in production. This role blends smart contract engineering with node operations, focusing on reliability, security, automation, and scalable delivery of decentralised solutions.

Your responsibilities:

• Design, develop, and maintain smart contracts (Solidity/Vyper or relevant stack) aligned to product and security requirements.
• Build backend/Web3 components for contract interaction:
  • Transaction orchestration, signature flows, nonce management, gas strategies
  • Web3 SDK integrations
• Develop and manage contract deployment pipelines, including ABI/versioning, migrations, upgrade strategies (proxy patterns), and release coordination.
• Implement secure patterns for contracts:
• Deploy, configure, and operate blockchain nodes and supporting infrastructure:
  • Full nodes/archival nodes, RPC endpoints, validator nodes (as applicable)
• Manage node upgrades, chain configuration changes, and incident response for production networks.
• Implement operational tooling for:
  • Node health checks, RPC performance monitoring, log aggregation, and alerting
• Handle blockchain-specific reliability concerns:
  • Re-org handling, finality considerations, peer connectivity, RPC failover, rate limiting

Your Profile
Essential skills/knowledge/experience:

• Strong understanding of blockchain fundamentals:
  • transactions, blocks, gas/fees, wallets/keys, RPC, finality, consensus basics
• Hands-on experience with smart contracts:
  • Solidity (preferred) and development tooling (Hardhat/Foundry/Truffle/Remix)
• Experience working with EVM-based chains (Ethereum/Polygon/Arbitrum/Optimism/BSC)
  or enterprise chains (Hyperledger Fabric/Corda/Quorum) depending on project.
• Indepth experience in software engineering/infrastructure environment.
• Solid in blockchain/Web3 development or node/infrastructure operations.
• Bachelor’s degree in Computer Science/Engineering or equivalent practical experience.
• BFSI Industry experience/ exposure.

Rewards & Benefits
TCS is consistently voted a Top Employer in the UK and globally. Our competitive salary packages feature pension, health care, life assurance, laptop and access to extensive training resources and discounts within the larger Tata network.
We offer health & wellness initiatives and sports events; we are the proud sponsor of the London Marathon and partner with our local communities in Ireland.

Diversity, Inclusion and Wellbeing
Tata Consultancy Services UK&I is committed to meeting the accessibility needs of all individuals in accordance with the Ireland Employment Equality Acts 1998-2011 (as amended) and the Equal Status Acts 2000-2012 (as amended).
We welcome and embrace diversity in race, nationality, ethnicity, disability, neurodiversity, gender identity, age, physical ability, gender reassignment, sexual orientation. We are a disability inclusive employer and encourage disabled people to apply for this role.
As a Disability Confident Employer, we offer an interview to applicants with disabilities or long-term conditions who meet the minimum criteria for the role. Please email UKI.Recruitment@tcs.com if you would like to opt in.
If you are an applicant who needs any adjustments to the application process or interview, please contact us at UKI.Recruitment@tcs.com with the subject line: “Adjustment Request” or email fiona.harvey@tcs.com to request an adjustment. We welcome requests prior to you completing the application and at any stage of the recruitment process.

Beware of Fraudulent offers
This is to notify you that TCS does not ask for any sort of payment or security deposit from candidates at any stage of the recruitment process. The firm never sends out job offers from free internet email services like Gmail, Yahoo Mail, and so on. TCS has not authorised any third-party company to collect money on their behalf. As a vigilant job seeker, beware of fraudulent recruitment activity and protect your interests! You can write to UKI.Recruitment@tcs.com to report any fraudulent activity.

Due to the high volume of applications, we will be unable to contact each applicant individually on the status of their application. If you have not received a direct response within 30 days, then it should be deemed unsuccessful on this occasion.

Join us and do more of what matters. Apply online now.