Senior Programming Language Engineer, Cadence
Flow Foundation operates Flow, a consumer-focused layer-one blockchain for developers, users, global brands, and institutions. Flow provides infrastructure and tools for building consumer-scale applications, decentralized finance, games, and digital asset experiences.
Maintainer signals as of 8/29/2026
Funding history
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About Flow Foundation
Flow Foundation operates the Flow blockchain, a high-performance layer-one network supporting Cadence smart contracts and an EVM-equivalent environment. Flow offers mainnet and testnet infrastructure, native randomness, account abstraction, low-cost and gasless transactions, cross-VM interoperability, DeFi capabilities, developer SDKs, CLI tools, faucets, network access, and ecosystem support. Its platform serves developers building decentralized applications, DeFi protocols, games, digital asset applications, and consumer finance experiences, with adoption involving brands and institutions such as NBA, Disney, PayPal, NFL, and Ticketmaster.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will design and implement features for the Cadence smart contract programming language, taking language ideas from conception through implementation. You will work on compiler components such as parsing, semantic analysis, type checking, optimization, and code generation. You will integrate the language implementation with the on-chain execution environment and core protocol and build developer tooling and tests to ensure high coverage. You will apply knowledge of multiple programming paradigms and general purpose languages to solve language and runtime problems and prioritize the most impactful tasks.
Requirements
- Practical experience designing and implementing compilers including parsing, semantic analysis, type checking, optimization, and code generation
- Diverse exposure to different programming languages and programming paradigms
- Experience with one or more general purpose languages such as Go, Rust, C, C++, Swift, or Python
- Strong emphasis on test coverage and testing practices
- Comfortable prioritizing tasks and adapting plans as needed
- Bonus: experience with blockchain technologies
- Bonus: familiarity with functional languages (Haskell, OCaml, Clojure, Lisp)
- Bonus: experience with smart contract languages such as Solidity
- Bonus: experience contributing to open-source projects
Responsibilities
- Design and implement Cadence language features
- Implement compiler components including parsing, semantic analysis, type checking, optimization, and code generation
- Integrate the language implementation with the on-chain execution environment and core protocol
- Develop developer tooling to facilitate Cadence development
- Write and maintain comprehensive tests to ensure high test coverage