Blockchain Software Engineer

As a Blockchain Software Engineer at Ctrl Alt, you'll build the next generation of tokenization and governance infrastructure for digital capital markets. 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 product and engineering teams to integrate blockchain networks into systems, develop and test on-chain logic for tokenized assets, and build tools that make interacting with those networks seamless.

What you'll do

• 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 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

What you bring

• 3+ years of software engineering experience, with at least 1+ years working with blockchain or distributed ledger technologies
• Experience using TypeScript or JavaScript to build integrations with blockchains
• Familiarity with 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 such as signatures, hashes, and multisig, plus transaction flows
• Experience integrating blockchain infrastructure into backend applications, ideally in a TypeScript or JavaScript based environment
• Knowledge of blockchain tools, APIs, and development environments such as Cosmos SDK and Elements for Liquid

Nice to have

• 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

What we offer

• 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
• 26 days of annual leave, plus your birthday off and regional bank holidays, with flexible leave
• Enhanced parental leave policy
• 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
• Modern, centrally located offices in London, Belfast, Dundalk, and Dubai
• An annual learning and personal development budget for training, exams, certifications, and qualifications

About Ctrl Alt

Ctrl Alt designs and operates on-chain infrastructure powering digital capital markets globally. Since launching in 2022, they have tokenized over $1.5bn in assets across real estate, private credit, funds, litigation finance and more. The company has grown from 17 to 50 people and combines expertise in financial markets with cutting-edge in-house technology to deliver tailored, compliant solutions in the alternative assets space.