Senior Blockchain Engineer (Fintech)

Blockchain Engineer

Company

Ctrl Alt

Conditions

1 day agoSenior Belfast Hybrid Full Time Engineering Jobs by Ctrl Alt

Skills

Interoperability Hash Function Liquid Layer1 Design Specification Multisig Queue Assetmanagement Toronto Smartcontract Custodial Hashes Noncustodial Specs Belfast Tokenization Key Management Signatures Typescript Security Finance Backend Compliance Fintech Tools Cryptography Blockchain Documentation Wallet Cosmos Governance Operations Javascript Apis

About the Role

You will design and implement secure, auditable on chain smart contract logic for tokenization asset management and governance. You will work with a queue based architecture to create transactions send them to the blockchain node and manage the responses to keep the ledger in sync. You will integrate blockchain and distributed ledger technologies into backend systems. You will evaluate test and deploy blockchain logic on networks such as Cosmos Liquid and other Layer 1s. You will build tools for interacting with on chain infrastructure including transaction monitoring and wallet integrations. You will collaborate with product and engineering teams to deliver robust blockchain based solutions for financial institutions. You will stay up to date on developments in blockchain infrastructure standards and regulatory frameworks. You will promote best practices in blockchain security and operational resilience.

Requirements

• 3+ years of software engineering experience with at least 1+ years working with blockchain or distributed ledger technologies
• Experience using TypeScript/JavaScript to build integrations with blockchains
• Familiarising with a queue-based architecture
• Experience developing and deploying smart contract logic or similar on Layer 1 networks
• Familiarity with token standards and asset representation on-chain
• Understanding of cryptographic primitives (signatures, hashes, multisig) and transaction flows
• Experience integrating blockchain infrastructure into backend applications, ideally in a TypeScript/JavaScript based environment
• Knowledge of blockchain tools, APIs, and development environments (e.g. Cosmos SDK, Elements for Liquid, etc)
• Exposure to finance or fintech environments, particularly involving digital assets or tokenization
• Hands-on experience with Cosmos SDK, Liquid Network, or other modular blockchain frameworks
• Understanding of consensus mechanisms and interoperability protocols
• Familiarity with regulated tokenization platforms or compliance-first blockchain use cases
• Experience working with custodial and non-custodial wallet systems
• Strong communication skills for writing documentation and technical specs

Responsibilities

• Design and implement secure auditable smart contract logic for tokenization asset management and governance
• Use a queue based architecture to create transactions send them to the blockchain node and manage the responses to keep the ledger in sync
• Integrate blockchain and distributed ledger technologies into backend systems
• Evaluate test and deploy blockchain logic on networks such as Cosmos Liquid and other Layer 1s
• Build tools for interacting with on chain infrastructure including transaction monitoring and wallet integrations
• Collaborate with product and engineering teams to deliver robust blockchain based solutions for financial institutions
• Stay up to date on developments in blockchain infrastructure standards and regulatory frameworks
• Promote best practices in blockchain security and operational resilience

Benefits

• Competitive salaries with regular reviews that reflect your impact, performance, and progression.
• Generous stock options so you directly share in the company’s growth and long-term success.
• Premium private healthcare to support your physical wellbeing.
• 26 days of annual leave, plus your birthday off, and regional bank holidays - with flexible leave so you can take time off when you need it.
• An enhanced parental leave policy to support you and your family at every stage.
• A MacBook, screens, and any additional equipment you need to perform at a high level.
• Access to salary sacrifice schemes covering childcare, groceries, EV cars, tech, pensions, bikes, and subscriptions. (UK Only)
• Modern, centrally located offices in London, Belfast, Dundalk, and Dubai - designed for collaboration and focus.
• An annual learning and personal development budget for training, exams, certifications, and qualifications - whatever helps you move forward.

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