6 Blockchain Engineer jobs in the United Kingdom

Ready to be pushed beyond what you think you're capable of?
At Coinbase, our mission is to increase economic freedom in the world. It's a massive, ambitious opportunity that demands the best of us, every day, as we build the emerging onchain platform - and with it, the future global financial system.
To achieve our mission, we're seeking a very specific candidate. We want someone who is passionate about our mission and who believes in the power of crypto and blockchain technology to update the financial system. We want someone who is eager to leave their mark on the world, who relishes the pressure and privilege of working with high caliber colleagues, and who actively seeks feedback to keep leveling up. We want someone who will run towards, not away from, solving the company's hardest problems.
Our is intense and isn't for everyone. But if you want to build the future alongside others who excel in their disciplines and expect the same from you, there's no better place to be.
While many roles at Coinbase are remote-first, we are not remote-only. In-person participation is required throughout the year. Team and company-wide offsites are held multiple times annually to foster collaboration, connection, and alignment. Attendance is expected and fully supported.
Onchain is the new online. We want to bring 1B+ people onchain in the most secure way possible. We want to provide them secure platforms and tools to build and interact with exciting applications.
Protocol Security ensures the security of all onchain development at Coinbase. We partner closely with product teams to make sure that our users can safely and confidently engage with the onchain world.
*What you'll be doing (ie. job duties):***
* Develop onchain security strategies and perform security assessments and threat modeling of various blockchain protocols.
* Lead from the front, be proactive and thorough, and identify top onchain security risks and develop strategies to deal with them.
* Provide expert technical guidance to the team in building new frameworks, analysis tools, and security products.
* Lead the way in establishing best practices and engage with product and eng teams to get them adopted.
* Coach and mentor Protocol Security team members to build new skills and be crypto-forward.
* Guide Protocol Security to the cutting-edge of security technologies for blockchain protocols and help set standards for the rest of the industry to follow.
*What we look for in you (ie. job requirements):*
* You have extensive knowledge of onchain ecosystems, including the inner workings of L1 and L2 networks, DeFi protocols, staking, etc.
* You excel in identifying machine-level, transaction-level, and business logic-level vulnerabilities in smart contracts and protocol infrastructure.
* You have 3+ years of smart contract auditing experience and have led the audit of several complex protocols.
* You have an energy and self-drive for continuous learning as crypto is a constantly and rapidly changing space.
* You are passionate about mentoring and growing blockchain security engineers, as well as willing to learn from your team.
* You excel in clear, direct, and kind communication with technical and non-technical stakeholders.
* You have experience building relationships with security, product, and engineering teams.
* You balance long term strategic thinking with short term tactical planning.
ID: G2696
*Pay Transparency Notice: *The target annual salary for this position can range as detailed below. Full time offers from Coinbase also include target bonus + target equity + benefits (including medical, dental, and vision).
Pay Range:
£138,600-£154,000 GBP
Please be advised that each candidate may submit a maximum of four applications within any 30-day period. We encourage you to carefully evaluate how your skills and interests align with Coinbase's roles before applying.
Commitment to Equal Opportunity
Coinbase is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, creed, gender, national origin, age, disability, veteran status, sex, gender expression or identity, sexual orientation or any other basis protected by applicable law. Coinbase will also consider for employment qualified applicants with criminal histories in a manner consistent with applicable federal, state and local law. For US applicants, you may view the in certain locations, as required by law.
Coinbase is also committed to providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation because of a disability for any part of the employment process, please contact us at accommodations Data Privacy Notice for Job Candidates and Applicants
Depending on your location, the General Data Protection Regulation (GDPR) and California Consumer Privacy Act (CCPA) may regulate the way we manage the data of job applicants. Our full notice outlining how data will be processed as part of the application procedure for applicable locations is available Disclosure
For select roles, Coinbase is piloting an AI tool based on machine learning technologies to conduct initial screening interviews to qualified applicants. The tool simulates realistic interview scenarios and engages in dynamic conversation. A human recruiter will review your interview responses, provided in the form of a voice recording and/or transcript, to assess them against the qualifications and characteristics outlined in the job description.
For select roles, Coinbase is also piloting an AI interview intelligence platform to transcribe and summarize interview notes, allowing our interviewers to fully focus on you as the candidate.
*The above pilots are for testing purposes and Coinbase will not use AI to make decisions impacting employment*. To request a reasonable accommodation due to disability, please contact mailto:

Ready to be pushed beyond what you think you're capable of?
At Coinbase, our mission is to increase economic freedom in the world. It's a massive, ambitious opportunity that demands the best of us, every day, as we build the emerging onchain platform - and with it, the future global financial system.
To achieve our mission, we're seeking a very specific candidate. We want someone who is passionate about our mission and who believes in the power of crypto and blockchain technology to update the financial system. We want someone who is eager to leave their mark on the world, who relishes the pressure and privilege of working with high caliber colleagues, and who actively seeks feedback to keep leveling up. We want someone who will run towards, not away from, solving the company's hardest problems.
Our is intense and isn't for everyone. But if you want to build the future alongside others who excel in their disciplines and expect the same from you, there's no better place to be.
While many roles at Coinbase are remote-first, we are not remote-only. In-person participation is required throughout the year. Team and company-wide offsites are held multiple times annually to foster collaboration, connection, and alignment. Attendance is expected and fully supported.
Onchain is the new online. We want to bring 1B+ people onchain in the most secure way possible. We want to provide them secure platforms and tools to build and interact with exciting applications.
The Protocol Security team ensures the security of all onchain development at Coinbase. We partner closely with product teams to make sure that our users can safely and confidently engage with the onchain world.
*What you'll be doing (ie. job duties):*
* Perform threat modeling and security assessments of blockchain products and services.
* Propose, plan, and execute Red Team operations based on realistic threats.
* Write detailed reports covering the goals and outcomes of Red Team operations, including significant observations and recommendations.
* Collaborate with partner teams to improve detection and response capabilities.
* Provide expert technical guidance to the team in building new security frameworks and analysis tools.
* Stay informed on current security trends, advisories, publications, and academic research.
*What we look for in you (ie. job requirements):*
* Bachelor's or Master's degree in Computer Science, Cyber security, Software Engineering, or a related field.
* 3+ years of blockchain security experience is required.
* 3+ years of Red Team experience, with a track record of breaking complex systems using novel techniques.
* A track record of identifying critical vulnerabilities across the blockchain protocol stack, in both onchain and offchain components.
* Extensive knowledge of the blockchain ecosystem, including the inner workings of L1 and L2 networks, DeFi protocols, native staking, etc.
* Expertise in designing robust security countermeasures to prevent known and anticipated vulnerabilities.
* Energy and self-drive for continuous learning as crypto is a constantly and rapidly changing space.
* Excellence in clear, direct, and kind communication with technical and non-technical stakeholders.
* Experience in building relationships with product, engineering, and other security teams.
*Nice to haves:*
* Participation in computer security competitions (CTFs), Bug Bounty programs, open source security research, CVE analysis.
* Expertise in one or more of: Application Security, Network Security, Cloud Security.
* 1+ years of Software Engineering experience.
ID: G2702
*Pay Transparency Notice: *The target annual salary for this position can range as detailed below. Full time offers from Coinbase also include target bonus + target equity + benefits (including medical, dental, and vision).
Pay Range:
£122,400-£136,000 GBP
Please be advised that each candidate may submit a maximum of four applications within any 30-day period. We encourage you to carefully evaluate how your skills and interests align with Coinbase's roles before applying.
Commitment to Equal Opportunity
Coinbase is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, creed, gender, national origin, age, disability, veteran status, sex, gender expression or identity, sexual orientation or any other basis protected by applicable law. Coinbase will also consider for employment qualified applicants with criminal histories in a manner consistent with applicable federal, state and local law. For US applicants, you may view the in certain locations, as required by law.
Coinbase is also committed to providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation because of a disability for any part of the employment process, please contact us at accommodations Data Privacy Notice for Job Candidates and Applicants
Depending on your location, the General Data Protection Regulation (GDPR) and California Consumer Privacy Act (CCPA) may regulate the way we manage the data of job applicants. Our full notice outlining how data will be processed as part of the application procedure for applicable locations is available Disclosure
For select roles, Coinbase is piloting an AI tool based on machine learning technologies to conduct initial screening interviews to qualified applicants. The tool simulates realistic interview scenarios and engages in dynamic conversation. A human recruiter will review your interview responses, provided in the form of a voice recording and/or transcript, to assess them against the qualifications and characteristics outlined in the job description.
For select roles, Coinbase is also piloting an AI interview intelligence platform to transcribe and summarize interview notes, allowing our interviewers to fully focus on you as the candidate.
*The above pilots are for testing purposes and Coinbase will not use AI to make decisions impacting employment*. To request a reasonable accommodation due to disability, please contact mailto:

Summary

Are you a seasoned software engineer with a passion for TypeScript programming and blockchain technology? IO Global, the visionary creator of the Cardano blockchain platform, is seeking a talented Senior Software Engineer with expertise in typescript to join our dynamic smart contract team. You’ll be helping to build a TypeScript smart contract platform atop Cardano’s Plutus. If you're eager to contribute to the future of smart contracts in TypeScript and are excited about working on groundbreaking projects, we want you!

At IO Global, we're at the forefront of developing Cardano's smart contract functionality, using functional programming languages as our foundation. Our smart contract platform team is an interdisciplinary group that not only engages in original research and development but also translates its findings into real-world production systems. 

Duties

As a Senior Software Engineer in the team, your mission is to elevate Cardano’s smart contract platform to a world-class level, capable of satisfying the diverse requirements of our users while adhering to the system's technical constraints. Your responsibilities will include:

• Collaborating with a team of seasoned engineers and researchers to design and implement missing features in Cardano smart contract languages, compilers, and runtime systems
• Crafting comprehensive documentation to assist users in effectively utilizing the languages
• Leveraging your seniority to guide and mentor junior colleagues, fostering a culture of excellence and innovation within the team

Requirements

Key Competencies

• Proficient in TypeScript, back-end applications/systems design
• Strong English communication skills, both verbal and written
• Demonstrated ability to execute software development tasks independently
• Capable of driving the technical roadmap, taking initiatives to ensure project progress
• Leading by example to cultivate a culture of craftsmanship and innovation
• Proficient in writing documentation for code and technical user manuals

Education / Experience 

• Background in TypeScript
• Experience working with back-end applications/systems design
• A deep understanding of javascript runtimes
• A deep understanding of computer science fundamentals
• Bachelor's degree in Computer Science or equivalent practical experience
• Background in designing and implementing programming languages is a plus
• Proficiency in Haskell or another functional programming language is a plus
• Experience in software development, data structures, and algorithms
• Academic or industrial R&D experience, including writing papers or implementing innovations from research papers is a plus
• Experience working in a complex, matrixed organization with cross-functional projects
• Experience in a technical leadership role, leading projects and setting technical direction, would be a significant bonus
• Exposure to blockchain and UTXO-based ledgers is also a bonus

Major Plus : Compiler design & optimization, Blockchain platforms

Benefits

• Flexible schedule
• Remote work
• Laptop reimbursement
• New starter package to buy hardware essentials (headphones, monitor, etc)
• Learning & Development opportunities
• Competitive PTO 
• Medical Benefits

At IOG, we value diversity and always treat all employees and job applicants based on merit, qualifications, competence, and talent. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Who are we?

IOG, is a technology company focused on Blockchain research and development. We are renowned for our scientific approach to blockchain development, emphasizing peer-reviewed research and formal methods to ensure security, scalability, and sustainability. Our projects include decentralized finance (DeFi), governance, and identity management, aiming to advance the capabilities and adoption of blockchain technology globally.

We invest in the unknown, applying our curiosity and desire for positive change to everything we do. By fueling creativity, innovation, and progress within our teams, our products and services are designed for people to be fearless, to be changemakers.

About Partner Chains:

IOG’s Partner chains Tribe is an innovation project built using Substrate. It aims to simplify blockchain deployment, operation and interoperability by combining modular technology with proven security, liquidity, and reliability. Partner Chains empowers developers and validators to create optimized blockchains without network or technology stack lock-in, fostering a new era of interoperable and scalable solutions.

What the role involves:

As a Software Engineer at IOG, you are responsible for writing high-quality code for our products. You have the exciting challenge of working with cutting-edge research and technology with a focus on the market's needs. To support you on this challenge, our products have software architects, product managers, project managers, formal methods specialists, and QA test engineers, with whom you must communicate professionally, effectively, and efficiently.

• Follow agile software development practices
• Work with teams across multiple time zones
• Work independently on software development tasks
• Be proactive and require minimal supervision or mentoring to complete tasks
• Review specifications produced by architects and formal methods specialists
• Contribute to the design of algorithms
• Write clean, straightforward, efficient code that satisfies previously agreed acceptance criteria and specifications
• Commit often and submit small pull requests frequently
• Cover your code with unit, property and integration tests when applicable
• Review the pull requests of your team mates
• Fix bugs in your own code and in legacy code from others
• Be available for emergency fixing of severity 1 issues on deployed products
• Integrate software components and third-party libraries
• Verify and deploy programs and systems
• Troubleshoot, debug and upgrade existing software
• Write documentation for the code
• Write technical user manuals
• Be knowledgeable of distributed and concurrent computation
• Be knowledgeable of cryptography

Requirements

Who you are:

• A minimum of 5  years of development experience (Solidity, Rust or TypeScript)
• Experience working with Git
• Practical experience with Agile software development methods
• Knowledge of functional and object-oriented programming paradigms
• Degree in Computer Science is desirable but not essential 
• Be knowledgeable of cryptography and usage in blockchains
• Demonstrated proficiency in programming languages such as Solidity, Rust, and TypeScript
• Design, develop, and deploy smart contracts on multiple blockchains
• Create and optimize on-chain program architectures for efficiency, scalability, and security
• Ensure all smart contracts are rigorously tested and audited to meet high security standards
• Experience working with smart contracts and blockchain technology essential
• Experience with web services development and RESTful APIs
• Distributed systems and network development
• A track record of delivering software projects from start to finish
• Proficiency in software development best practices, including design, implementation, testing, and debugging
• Write idiomatic code that satisfies the acceptance criteria of a given task
• Write tests (unit tests, property tests) that provide sufficient and non-superfluous efficient code coverage.
• Document code and APIs concisely and unambiguously
• Break down tasks into sub-tasks that are completable in a short amount of time and report completion as required by managers
• Pragmatically adhere to software engineering principles (modularity, incremental development, no premature optimization, no feature creep, no speculative generality, .)

Are you an IOGer?

Do you find yourself questioning the status quo? Do you tinker with ideas and long to turn those ideas into solutions? Are you able to spark thoughtful debates, bringing out the inquisitiveness in others? Does the promise of continuously growing excite you? Then get ready to reimagine everything you thought wasn’t possible because that’s what it means to be an IOGer - we don’t set limits, we break them. 

Benefits

• Remote work
• Laptop reimbursement
• New starter package to buy hardware essentials (headphones, monitor, etc)
• Learning & Development opportunities
• Competitive PTO 

At IOG, we value diversity and always treat all employees and job applicants based on merit, qualifications, competence, and talent. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Director of Product Design at Bitcoin Smart Contracts Blockchain

This EVM Blockchain platform is at the forefront of transforming the financial industry with its cutting-edge technology and is seeking a passionate Director of Product Design to shape the design strategy and team for this world-changing business.

All the relevant skills, qualifications and experience that a successful applicant will need are listed in the following description.

The Company

• Leading player in the world of Ethereum Virtual Machine (EVM) Smart Contracts
• Extensive company funding allows for truly ground-breaking experimentation
• A diverse, international team working from anywhere in the world
• Extensive benefits, bonuses and share options

The Role

• Completely own the design practice build the strategy and build the team as you see fit
• Massive opportunity to design a blockchain ecosystem
• As well as building the practice and team you will also have the opportunity to be hands-on

Requirements:

• Design experience for a decentralised / Blockchain / Bitcoin / Etherium product
• Team management and growth experience
• Fluent English is a must / Spanish is a bonus

If you feel you have the relevant experience please reply to this advert or email your CV to

Not right? Have a look at some of our other

Grey Matter. Intelligent recruitment for the digital, technology, marketing and media sectors. Based in London, we partner with B2B & B2C technology companies, global brands, start-ups, publishers and agencies to find talent in London, across the UK and internationally.

Our Tech Solutions Team are specialists in the digital technology and SaaS industry and work with a range of companies from disruptive fintechs to established marketing SaaS platforms and rapidly growing ad technology tools to digital marketplaces.

The key roles they hire for are Solutions Consultants, Sales Engineers, Product Managers, Technical Account Managers and Pre-Sales Engineers. Our portfolio of roles includes a variety of technical, commercial, individual contributor and management roles.

#J-18808-Ljbffr