Backend Web3 Jobs in France

Full time - Paris or London hybrid or Remote from Western EU

Kiln is now part of the prestigious French Government program #FT120 from La French Tech! 🎉 🇫🇷

As a Senior Backend Engineer at Kiln, you will join our Software Team, composed of 14 engineers (Backend, Frontend, QA) split into squads, to build the future of our SaaS/API-first products [https://docs.kiln.fi/v1/]. You will report to our Head of Software, and collaborate with the Product, Infrastructure and Smart-Contract teams to work on the various products that Kiln's offers.

Responsibilities:

• Contribute to architectural decisions and technical strategy.

• Develop and implement software features in our Golang services (data aggregators, APIs, Blockchain Transaction crafting, ...).

• Take part in automation, testing, and CI/CD processes.

• Participate in code review, bug fixing, code maintenance.

• Ensure that our services communicate with each other seamlessly, have minimal downtime, and recover quickly.

• Make sure we respect any software security norms (Kiln is a SOC 2 Type 1 and Type 2 company).

• Actively suggest continuous improvement of Kiln's platform and engineering practices.

• Communicate with other Kiln teams to help them understand the Software roadmap and technical challenges. 

Stack: 

• Software: Go, TypeScript, PostgreSQL, REST API…

• Smart-contract: Solidity, Foundry

• Infrastructure: GCP, AWS, Kubernetes

• 100+ Go services processing data for 15+ blockchains

• 200Gb of raw data processed every day

• 2Tb of staking data available through our Kiln Connect API

Requirements:

• +6 years of experience as Software Engineer (Backend), designing, building, and deploying user-facing, infrastructure-related, and/or API-based products.

• +3 years of Golang programming — professional experience in a production environment.

• Familiar with container/orchestrator technologies (Docker/Kubernetes), and Continuous Integration.

• Ability to ship opinionated architectural choices and code, and to share software best practices.

• Proven interest in Web3, blockchain, cryptocurrency and smart contracts - check our Tech Blog [https://www.kiln.fi/blog] and Open-Source Contribution [https://www.kiln.fi/open-source] 

• Fluent in English.

Nice-to-have:

• Solid understanding of protocols, staking, and DeFi.

• Previous experience working within a certified environment (SOC2, ISO 27001, PCI DSS, HIPAA...)

• Living close to Paris or London

About Kiln:

Kiln is the leading enterprise-grade rewards platform that enables institutional customers to stake assets and integrate staking & DeFi functionality into their offerings. Our API-first platform provides fully automated validators, staking & DeFi protocols access, and comprehensive data and commission management.

With $13+ billion in crypto assets staked through our platform, Kiln has established a strong presence on Ethereum, managing over 4.3% of the network through 45,000+ validators — all with zero slashing events.

Kiln serves more than 140 leading customers, including Binance, BitPanda, Bitgo, Fireblocks, VanEck, and TrustWallet.

Our team of 100 ecosystem enthusiasts brings experience from industry leaders like Google, Circle, Ledger, Chainalysis, and other prominent technology and cryptocurrency companies.

We've raised $30M in total funding from prominent investors including 1kx, Crypto.com, Illuminate Financial, Consensys, Wintermute, Kraken Ventures...

Join Kiln and help us make the web more secure, stable, decentralized, and fair!

How Kiln will support you:

• A fast-paced, no bureaucratic work environment

• Equity share options in the business: if Kiln succeeds, we all succeed!

• Competitive salary

• Flexible holiday

• Flexible remote working

• Internet connection paid up to €50/month

• Significant personal development and tech conf budget

Your interview process

1. Recruiter Interview (40 min)

2. Take-home test (< 3 hours)

3. Technical Interview (90 min)

4. Core Values Interview (45 min)

5. Founders Interview (30 min)

6. Offer!

Please note that we are not sponsoring visas for persons without work authorization in the UK or the EU. This role is specifically for employees (no B2B or contractors) based in the EU and the UK.