Blockchain Engineer

ctrl-alt.co; Belfast; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading tokenization infrastructure platform in Belfast is seeking a Blockchain Engineer to develop secure and reliable on-chain components. With experience in blockchain technologies, you'll collaborate with product teams and contribute to a multi-chain architecture. This role offers competitive salary, generous stock options, and a flexible working environment.

Benefits

Generous stock options

Private health insurance

24 days annual leave plus public holidays

Annual learning and personal development budget

IT equipment support

Qualifications

• 3+ years of software engineering experience, with at least 1+ years working with blockchain.
• Familiarity with queue-based architecture.
• Experience developing smart contract logic or similar on Layer 1 networks.

Responsibilities

• Design and implement secure smart contract logic for tokenization.
• Integrate blockchain technologies into backend systems.
• Collaborate to deliver blockchain-based solutions for financial institutions.

Skills

Software engineering

Blockchain technologies

Smart contract deployment

Cryptographic primitives

Tools

Cosmos SDK

Liquid Network

Job description

Ctrl Alt is a leading tokenization infrastructure platform, combining groundbreaking technology with expert financial engineering to deliver tailored, compliant solutions in the alternative assets space. Specializing in structuring, issuance and distribution, Ctrl Alt supports clients through every stage of the tokenization lifecycle.

Since launching in 2022, Ctrl Alt has tokenized over $385m in assets, spanning real estate, private credit, funds, litigation finance and more.

With offices in the UK, Ireland and the UAE, the Ctrl Alt team comprises top-tier financial, product and technology experts including alumni from Morgan Stanley, Credit Suisse, UBS and Revolut. Ctrl Alt is backed by leading VCs and financial institutions including Molten, MiddleGame Ventures and SEI.

AS SEEN IN

What's Involved

We’re looking for a Blockchain Engineer to join our team and help build the next generation of Ctrl Alt’s tokenization and governance infrastructure. You’ll work at the intersection of finance and distributed ledger technology, designing secure and reliable on-chain components that power a platform trusted by asset managers, fund administrators, and institutional investors.

You’ll collaborate closely with our product team and other engineers to integrate blockchain networks into our systems, develop and test on-chain logic for tokenized assets, and build tools that make interacting with those networks seamless. Bringing both initiative and deep technical expertise, you’ll play a key role in ensuring our blockchain integrations are robust, auditable, and ready to scale as adoption grows. You’ll be the key player in Ctrl Alt’s multi-chain architecture and help us to take our blockchain technology to the next level.

Key Responsibilities:

• Design and implement secure, auditable smart contract logic for tokenization, asset management, and governance
• Work with a queue-based architecture to create transactions, send them to the blockchain node, and manage the responses to keep track of the ledger
• Integrate blockchain and distributed ledger technologies into our 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 (transaction monitoring, wallet integrations, etc.)
• 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

Requirements

Must Haves

• 3+ years of software engineering experience, with at least 1+ years working with blockchain or distributed ledger technologies
• 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 (e.g. signatures, hashes, multisig) and transaction flows
• Knowledge of blockchain tools, APIs, and development environments (e.g. Cosmos SDK, Elements for Liquid, etc.)

Nice to Haves

• 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
• Generous stock options, with equity plans that let you share in the company’s growth
• Private health insurance - we offer a premium private health insurance scheme (UK/IRE only)
• We offer 24 days annual leave plus public holidays, with flexibility for additional time off
• IT and office equipment to support your work, including a MacBook, displays and accessories
• Salary sacrifice scheme and financial tools to help you with your personal finances, covering childcare, groceries, tech, pensions, bikes and subscriptions (UK only)
• A state of the art central office in Belfast or Dundalk
• An annual learning and personal development budget for training, exams, certifications, qualifications or anything else which helps you progress at work and your career
• The opportunity to work in a high-growth startup where your contribution matters and shapes an industry
• Exposure to collaborative working and direct knowledge sharing from experts across financial services, blockchain and fintech

How to Apply

Simply hit apply below, where you will be redirected to a form to fill out all relevant details. You will be asked to upload a CV and Cover Letter.

Interview Process:

• Stage 1: Initial interview
• Stage 2: Technical Interview
• Stage 3: Cultural interview with the CEO