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# Web3 Software Engineer

- **Company:** Startup Talents
- **Location:** London, UK
- **Salary:** £70,000.0 - £130,000.0
- **Contract:** Permanent contract
- **Skills:** Databases, Distributed Systems, Github, Blockchain, Web3.js, Web Technologies, Front End Software Development
- **Published:** August 26, 2026
- **Apply:** https://www.collegerecruiter.com/job/2815168492-web3-software-engineer

## About the Role

* Agility to touch all parts of the stack, from frontend to database and distributed systems.
 * Familiarity with applied cryptography, including hash functions, encryption schemes, proof schemes, etc, as well as the mathematical education to back it up.
 * Expertise in designing and deploying distributed systems.
 * Deep understanding of relevant protocols and the general landscape of blockchain infrastructure.
 * Expertise deploying smart contracts to mainnet.
 * Prior work on software dev infra and tooling.
 * You have a personal portfolio site and/or active Github with active projects and links to projects to show.
 * Ideally you have experience in web technologies, distributed systems, cryptography.
 * Ideally you have worked on a notable product / project.
 * Ideally you have contributed to FOSS.
 * Ideally you have worked on a startup as founding engineer.

## Description

London, United Kingdom | Posted on 12/04/2025

The employer is an early stage Crypto startup developing a toolchain for shared, just-in-time applications that gives independent developers freedom to build powerful shared apps. It is an interoperable, low cost, quick to build, easy to manage, copilot-friendly and platform independent platform.

Missions:

Your role will be to ship code, iterate with customers, and join us in prototyping next-gen products and protocols.

This role could grow into an leading research role, senior architect role or engineering executive role as Tonk grows.

Core responsibilities include:

 * Implementing cutting-edge cryptographic systems across diverse tech environments.
 * Designing and architecting protocols.
 * Secure and efficient smart contract development.
 * Frontend development.

Requirements

 * Agility to touch all parts of the stack, from frontend to database and distributed systems.
 * Familiarity with applied cryptography, including hash functions, encryption schemes, proof schemes, etc, as well as the mathematical education to back it up.
 * Expertise in designing and deploying distributed systems.
 * Deep understanding of relevant protocols and the general landscape of blockchain infrastructure.
 * Expertise deploying smart contracts to mainnet.
 * Prior work on software dev infra and tooling.
 * You have a personal portfolio site and/or active Github with active projects and links to projects to show.
 * Ideally you have experience in web technologies, distributed systems, cryptography.
 * Ideally you have worked on a notable product / project.
 * Ideally you have contributed to FOSS.
 * Ideally you have worked on a startup as founding engineer.

Contract: Permanent

Location: London (full time on site office)

Salary: 70 to 130k USD

Benefits: Competitive salary + equity + token rights + Paid travel + personal wellness budget + Generous equipment budget + 20 days PTO on top of 8 UK bank holidays + Private health & dental insurance

Recruitment process: HR Call + CTO Interview + Technical Interview


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