• All our engineers are sharp technical experts with the ability to think like product owners- being able to advocate for code quality as a long term strategic investment while knowing when to adapt a more start-up mentality to deliver rapid business value. They drive architecture and implementation decisions, mentor other engineers, and stay up to date with the latest Javascript techniques and trends as part of the collective Whitespectre Javascript brain trust. 
• Whitespectre operates on a fully-modern tech stack- toolset includes Node.js/Next.js/Express, React, Typescript, REST/GraphQL, etc. Working smartly is important to us; automation, dynamic environments spin up with new feature branches and slack bot integrations control our production releases (CI/CD, AWS, Github workflows).
• We follow an agile 2-week sprint methodology with Product, UI/UX and Engineering within the team to align closely with business stakeholders and incrementally build and release new functionality.
• The majority of our projects involve building greenfield applications and our delivery teams typically own products end to end - your thinking and contribution make a big impact!
• You can read more about life in our Javascript engineering team in this post by our Senior Engineer, Eneko, and about the ideas implemented by our Node.js team in this blog post.

• Annual Performance & Salary Reviews, with proactive career management
• 20 Days PTO & 3 Charity Days annually
• Funded face-to-face meet ups in Barcelona, as well as, South America and Asia
• Assisted Relocation package 
• Flexible working hours for efficient teaming in a 100% remote environment (proudly remote-first for 10 years!)
• Free English classes & educational expenses support
• Generous Employee Referral Plan
• Team Fitness and Charity Initiatives

• Great company environment - check out Glassdoor
• Personalized onboardings
• Opportunity to contribute to company-level initiatives
• Work with a broad range of best-in-class technologies
• Cross-company knowledge groups - improve your expertise, share your learnings and work with different technologies and tools
• Regular brown bag learning sessions
• An emphasis on Work-life balance

• The challenge of collaborating with business stakeholders and Product Managers to advocate for technology solutions while bearing in mind the tradeoffs for business results
• The responsibility of designing new architectures and being confident to justify your technology decisions. (Plus debating and recognizing when a colleague has an even better idea!)
• The opportunity to go outside your core expertise and strengthen skills with other technologies and learn more
• To solve problems that can’t be addressed by just searching Stack Overflow
• An environment where excellent communication skills (both verbal and written) are valued and honed.
• A culture where people from different backgrounds interact, collaborate and reach a shared goal

• 6+ years of experience with Javascript/ Typescript 
• 4+ years of experience with Node.js
• 2+ years of experience working with Next.js and Nest.js
• 2+ years of experience with React or similar in the frontend 
• Advanced English level, excellent verbal and written communication skills
• Experience contributing to technical decision-making within a team
• Can work full-time with a significant crossover with the core hours: 11am - 7pm Central European Time
• Live outside of the US. Please, no recruitment agencies.

• Apply by completing the form below - and we’ll get back to you. Candidates enjoy meeting our Javascript Technical Leads and discussing interesting coding challenges as part of our selection process
• Our process includes the following:
  • A 30 minute video call with our Talent Acquisition team to understand your experience & expectations
  • A 60 minute technical interview to explore your technical capabilities
  • Final interview(s) with the company leadership to confirm fit & finalize your offer

About Hylé

Hylé is pioneering the future of blockchain infrastructure with ZK technology. Our approach promises a streamlined, efficient blockchain, maintaining its key features: censorship resistance, permissionless value, and reliable decentralization.

Backed with $5M from leading VCs, we’re building our team, currently led by founders Sylve (CEO) and Lancelot (CTO). Our goals are ambitious - B2B use cases within 4 months, series A within the year, and going live on mainnet within 24 months.

Programming Skills

The initial team will be 3-4 devs and the CTO, so product ownership will be essential.

This role target a principal engineer with extensive web3 blockchain experience at the protocol / infrastructure level. The ideal candidate has more than 10 years or programming experience, including a substantial amount in specifically web3 stacks such as:

• Backend programming: Rust / Go
• Shipped a blockchain mainnet
• Worked on bridges across different chains
• Worked with one of Cosmos SDK / Polkadot / Geth / …
• DevOps / Infra (either on bare metal or containerised)

Other skills

• Willing to work in a venture start-up with high risk - this is a go big or go home project
• Highly adaptable - we will try to remain rather nimble, and while the overall goal is well specified the path to get there is subject to change
• Good with feedback, communication, transparency
• Business & delivery oriented
• English mandatory, French appreciated

Key responsibilities

The core technical objective is twofold: shipping B2B use-cases in the coming months, then expanding that a permissionless mainnet blockchain with 24 months. You can expect:

• At first working on a Cosmos SDK app written in Go, augmenting it with verifiers for various ZK proving schemes (those mostly written in rust).
• Exporting the implications of our new architecture by writing our own apps
• Bridging the state of the chain to/from other networks such as Ethereum
• Working on support for various wallets
• Investigate the need to switch away from the Cosmos SDK, and if this path is taken, participate in writing a new blockchain stack. If not, modify the Cosmos SDK accordingly.

Compensation & benefits

• Highly competitive salary + Equity
• Alan Green Mutuelle
• Computer of your choice
• Flexible remote policy (but no fully remote hire at this time)
• Socials - company retreats, weekly gathering

Other important info

We share an office in Paris (Le Peletier) with other tech companies, and would prefer avoiding fully remote hires at this time. Flexible remote is very possible.

Interview process is straightforward - a quick initial screening call, an in depth technical dive to answer any questions, a technical architecture interview, and a “fit” interview with my cofounder.

To apply

Interested in joining us in this exhilarating adventure? Send your resume to email.

• Our JavaScript developers are sharp technical experts with the ability to think like product owners- being able to advocate for code quality as a long term strategic investment while knowing when to adapt a more start-up mentality to deliver rapid business value. They drive architecture and implementation decisions, mentor other engineers, and stay up to date with the latest JavaScript techniques and trends as part of the collective Whitespectre JavaScript brain trust. 
• Whitespectre operates on a fully-modern tech stack- toolset includes React.js/Next.js/Nest.js with Typescript, REST/GraphQL etc. Working smartly is important to us; automation, dynamic environments spin up with new feature branches and slack bot integrations control our production releases (CI/CD, AWS, Github workflows).
• We follow an agile 2-week sprint methodology with Product, UI/UX and Engineering within the team to align closely with business stakeholders and incrementally build and release new functionality.
• The majority of our projects involve building greenfield applications and our delivery teams typically own products end to end - your thinking and contribution make a big impact!
• You can read more about life in our JavaScript engineering team in the posts by our Senior Engineer, Eneko. 

• Competitive salaries, with payment in USD
• Annual Performance & Salary Reviews, with proactive career management
• 20 Days PTO & 3 Charity Days annually
• Funded face-to-face meet ups in Barcelona, as well as, South America and Asia
• Assisted Relocation package 
• Flexible working hours for efficient teaming in a 100% remote environment (proudly remote-first for 10 years!)
• Free English classes & educational expenses support
• Generous Employee Referral Plan
• Team Fitness and Charity Initiatives

• Great company environment - check out Glassdoor
• Personalized onboardings
• Opportunity to contribute to company-level initiatives
• Work with a broad range of best-in-class technologies
• Cross-company knowledge groups - improve your expertise, share your learnings and work with different technologies and tools
• Regular brown bag learning sessions
• An emphasis on Work-life balance

• The challenge of collaborating with business stakeholders and Product Managers to advocate for technology solutions while bearing in mind the tradeoffs for business results
• The responsibility of designing new architectures and being confident to justify your technology decisions. (Plus debating and recognizing when a colleague has an even better idea!)
• The opportunity to go outside your core expertise and strengthen skills with other technologies and learn more
• To solve problems that can’t be addressed by just searching Stack Overflow
• An environment where excellent communication skills (both verbal and written) are valued and honed.
• A culture where people from different backgrounds interact, collaborate and reach a shared goal

• 6+ years of experience with TypeScript/JavaScript, 4+ years with React.js and Next.js/Nest.js/Node.js
• Advanced English level, excellent verbal and written communication skills
• Experience contributing to technical decision-making within a team
• Can work full-time with a significant crossover with the core hours: 11am - 7pm Central European Time
• Live outside of the US. Please, no recruitment agencies.

• Apply by completing the form below - and we’ll get back to you. Candidates enjoy meeting our JavaScript Technical Leads and discussing interesting coding challenges as part of our selection process
• Or email us with any questions on email 
• Our process includes the following:
• A 30/45 minute video call with our Talent Acquisition team to understand your experience & expectations
• A 60 minute technical interview to explore your technical capabilities
• Final interview(s) with the company leadership to confirm fit & finalize your offer