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Senior Software Engineers are responsible for improving how IOHK builds and maintains software, alongside actively contributing to product development.   Senior Software Engineer is responsible for the quality of engineering practices within a team. Senior Software Engineers work across teams to identify cross-team improvements for IOHK by (for example) sharing code, removing complexity or implementing new practices. As a senior member of the team you are expected to mentor and grow other software engineers and act as a go-to person within the team and the wider organisation across multiple codebases and languages.


  • Advocates for and models great quality with proactive actions, and tackles difficult and subtle system issues
  • Uses systematic debugging to diagnose all issues within a set of related domains and leads in fostering a culture of observability and monitoring across several teams
  • Regularly works across teams to build a culture for iterative, autonomous development and future scaling.
  • Is a technical and prioritisation leader across a set of related team's domains, consistently pushing boundaries and exploring gaps in understanding.
  • Is a go-to within the team and the wider organisation across multiple codebases and languages. 
  • Be proactive and require minimal supervision or mentoring to complete tasks
  • Review specifications produced by architects and formal methods specialists
  • Lead the design of components and their interactions
  • 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
  • Write documentation for the code
  • Write technical user manuals
  • Be knowledgeable of distributed and concurrent computation
  • Be knowledgeable of the basics of cryptography


Key Competencies 

  • Ability to understand project needs, objectives and timescales to feed into planning and setting deadlines for a specific stream. 
  • Clearly articulates new issues, suggests changes to management for implementation.
  • 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
  • Provide detailed guidance on the work to be done, assist with task assignments and deliver deep reviews and feedback on the work.
  • Pragmatically adhere to software engineering principles (modularity, incremental development, no premature optimization, no feature creep, no speculative generality, ...)

Education / Experience

Degree in Computer Science is desirable but not essential 

  • 7+ years of software engineering experience in the required language ( Haskell, Javascript, Scala, Rust) 
  • Experience working with Git and Git workflow
  • Practical experience with Agile software development methods
  • Knowledge of functional and object-oriented programming paradigms


  • 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.

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