Compensation

Competitive

Remote within

Timezones

GMT (-5/+5 hours)

Contract type

Full time

Remote working

Technologies & frameworks

Software Architecture
Blockchain
Haskell
Architecture
TDD

Benefits & perks

Paid sick days
Pension
Performance bonus
Promote from within
Committed to a diverse team
Paid time off
100% remote working
Tokens
Learning & development
Health insurance - us employees
Healthcare stipend - uk & ireland employees
No call fridays
Company meetups

IO Global is searching for a Senior Software Engineer (Haskell Developer) to join its Node team.

Role overview

IO Global is searching for a Senior Software Engineer (Haskell Developer) to join its Node team. The Cardano node is a large Haskell codebase, making nontrivial use of some of the programming language’s more advanced features, and tested using property-based testing. We are looking for someone to join our Consensus team and help us improve and add features to the Cardano blockchain, such as consensus, on-chain governance and support for light clients and sidechains. As a member of the team, you will have the exciting challenge of working on cutting-edge research and technology, translating it into the design and implementation necessary for the Cardano proof-of-stake blockchain to be globally available and reliable.

Your mission

Following agile software development practices
Working with teams in multiple time zones
Carrying out software development tasks independently, with minimal supervision or mentoring
Design, architect, and build our Haskell backend with well-documented, tested code that can gracefully scale.
Reviewing specifications produced by architects and formal methods specialists
Contributing to the design of algorithms
Writing clean, straightforward, efficient code that satisfies acceptance criteria and specifications
Committing often and submitting pull requests frequently, and reviewing the pull requests of your teammates
Covering your code with unit, property, and integration tests when applicable
Fixing bugs in your own and legacy code
Being available for emergency fixing of severity 1 issues on deployed products
Integrating software components and third-party libraries
Verifying and deploying programs and systems
Troubleshooting, debugging, and upgrading existing software
Writing documentation for code and technical user manuals.
Willing to learn and extend the technical architecture of new protocols.

Requirements

Your expertise

A minimum of four years’ development experience (professional or otherwise) in Haskell
You have owned and maintained a non-trivial codebase with longstanding active development
Proficient knowledge of functional programming
Experience with Git
Good understanding of QuickCheck/Hedgehog and property testing, and of call-by-need, memoization, and lazy evaluation
Familiarity with frameworks/libraries such as conduit and pipes, cryptonite, lens, optparse-applicative, stm, Template-Haskell, CBOR, GHC Generics, etc
Strong knowledge of distributed systems and concurrent computation, and the basics of cryptography
Proficiency with advanced FP techniques such as advanced functional data structures, dependent types, extensible effects, generic programming, streaming, and type-level programming.

Nice to haves

Prior experience with blockchain projects is helpful but not required.
Prior experience in developing high-quality backend system architecture and knowledge of how such architecture principles should apply to blockchains

Benefits

Location

IOG is a fully distributed organization and therefore this is a remote position. Due to team distribution we are ideally searching for someone in a European timezone.

All Colleagues

Flexible schedule
Remote work - ability to work anywhere
Laptop reimbursement
New starter package to buy hardware essentials (headphones, monitor, etc)
Learning & Development opportunities
Competitive PTO and Sick Leave plan

US Employees

Medical, Dental, and Vision benefits coverage through Anthem with 100% premium cost covered by IO Global for the employee and dependents
Health Savings Account
Life Insurance

UK Employees

Monthly Health Stipend to use towards any wellness or medical coverage/service
Pension

IOHK

250+
Singapore

Founded in 2015, IO Global is one of the world’s pre-eminent blockchain research and engineering companies, best known for the Cardano blockchain platform. We are a fully decentralized, remote-working organization committed to the highest principles of academic rigour and evidence-based software development. The company builds high-assurance blockchain products for public and private sector clients. Our goal is simple – to fuel our drive to be best in class by giving you the opportunity, resources and support to deliver your finest work to date. You’ll work with some exceptionally talented and friendly individuals who are always open to new ideas and ways of working. IO Global is an advocate of decentralized remote working, with more than 700 people working in more than 60 countries. Everyone has a different skill set, a different culture, and is at a different stage in their life. We aim to make collaboration between diverse people fun, exciting, and always rewarding. Many companies say they ‘think outside the box’ – for IO Global it’s more, ‘we think outside the geography’.