Blockchain Engineer

Contract:

Full-time

Location:

Belfast, UK

Dundalk, IRE

Salary:

DOE

Team:

Engineering

About Ctrl Alt

Ctrl Alt is designing and operating the on-chain infrastructure powering digital capital markets globally. We bring together a unique blend of expertise in financial markets and cutting-edge in-house technology to deliver tailored, compliant solutions in the alternative assets space. Since launching in 2022, we’ve tokenized over $650m in assets across real estate, private credit, funds, litigation finance and more.

We’re building a high-performance, people-first culture where ambitious individuals can thrive. We move fast, think big and hold ourselves to a high bar, while keeping things collaborative, open and genuinely fun. At Ctrl Alt ideas win on merit, teams work closely with leadership, and everyone has a voice in shaping what we build next.

We believe that hard work should come with real reward. You won’t just join a company - you’ll help build one. Last year alone, we grew from 17 to 50 people, and this year we’re going faster and further. That means real responsibility, meaningful impact, and the opportunity to grow alongside a company that’s redefining the future of finance through the tokenization of alternative assets.

If you’re excited by scale-up energy, ownership, and the chance to help shape both a business and a culture, Ctrl Alt is where you can do the most rewarding work of your career.

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.

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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.

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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
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 (e.g. 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.)

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

Benefits

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

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