Senior Front-End Engineer (Inbox Web)

ProtonMail; London; On-site; GBP 60,000 - 80,000; Full time

Job summary

Join ProtonMail as a Senior Front-End Engineer in London, where you'll contribute to developing key services like Mail and Calendar. Be part of a dynamic team dedicated to creating innovative user experiences while working in a psychologically safe environment that encourages creativity and collaboration.

Benefits

Flexible working hours

Parental leave support

Learning and development opportunities

Team building activities

Refreshments when working from the office

Qualifications

• 3+ years of experience with React or similar frameworks.
• Familiarity with code quality best practices and CI/CD.
• Proficient in TypeScript.

Responsibilities

• Develop high-quality user experiences within the Product portfolio.
• Transform product specifications into technical requirements.
• Enhance software development lifecycle and tools.

Skills

React

CI/CD

Automated testing

User experience

Team collaboration

Security awareness

UX

TypeScript

NodeJS

Micro-frontend architecture

Job description

Social network you want to login/join with:

Senior Front-End Engineer (Inbox Web), London

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Client:

ProtonMail

Location:

London, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Reference:

88bf1b833730

Job Views:

43

Posted:

22.06.2025

Expiry Date:

06.08.2025

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Job Description:

A better internet, where privacy is the default, is possible. Building this better internet might seem daunting or even unthinkable, but at Proton, this is what we do every day.

Proton was founded in 2014 by a group of scientists who met at the European Organization for Nuclear Research (CERN). Our first product,Proton Mail, is now the world’s largest encrypted email service. Subsequent Proton products, such asProton VPN,Proton Calendar, Proton Drive and Proton Passgive our users full control over how and with whom their data is shared.

Today, Proton makes privacy universally accessible. Journalists from outlets likeThe GuardianandThe New York Times, some of the world’s largest organizations, and people in more than 180 countries have signed up for over 100 million accounts. Our diverse and dynamic team is made up of more than 400 members representing over 40 different nationalities. While we are based in Geneva, Switzerland, we have offices in Zurich, Prague, London, Vilnius, Skopje, Taipei, Barcelona and many more employees working remotely around the world.

Join one of Europe’s fastest-growing companies to help us solve challenging problems and build new products that will reach hundreds of millions of people. We want to create more than just one of the world’s most impactful tech companies; we want to create a new internet that serves the interests of all people. We need you, your voice, your ideas, and your ambition to make it happen.

Purpose of the role

As a Front-end Engineer on the Inbox team, you will play a crucial role in developing Proton's most vital services, including Mail, Calendar, and Contacts. We expect you to be customer-centric, continuously learning, passionate about technology and usability. You are an adept at turning technical complexities into seamless user experiences. Effective teamwork, collaboration with Product, Design, APIs, and your team, and data-driven decision-making are essential aspects of this role.

In the Inbox organisation, we believe that a psychologically safe environment is critical to fostering innovation, collaboration, and growth.
We are rooted in science, and according to both academic research and empirical evidence, teams that feel safe to take risks and express their ideas are more likely to be innovative and perform better: you will play a key role in helping us creating such an environment across the entire organization.

What you will do

• Developing, deploying and supporting high-quality user experiences within our Product portfolio.
• Transforming product specifications into technical requirements and lead your team to their successful implementation.
• Enhancing Proton's software development lifecycle, tools, and code structure for an improved developer experience.
• Writing clear, concise and testable code to maintain and elevate the quality of our codebase.
• Managing the scoping, planning and execution of new features, technical initiatives and greenfield projects (depending on seniority).
• Fostering a culture of learning, creativity, and accountability for the best possible work.

Job requirements

While we prefer candidates who cover the entire skillset, don't hesitate to apply if you're not an exact match, as we're willing to help you grow in certain areas.

• 3+ years of experience with React or 2+ similar frameworks, developing performant and reusable components.
• Familiarity with best practices for ensuring code quality, including CI/CD.
• Experience with writing automated tests for your code.
• A product mindset with a focus on offering the best user experiences.
• Experience working in a distributed team.
• Able to work from the office (70%)
• Awareness of common security issues in client-side development, such as those in the OWASP top ten, and how to mitigate them.
• Familiarity with UX, accessibility, internationalization, and localization concerns and solutions.
• Experience with Grafana or other monitoring platforms.
• Experience with or exposure to the DOM API.
• Experience with breaking down product requirements into architecture design and implementation.
• Experience with NodeJS.
• Proficiency with TypeScript.
• Experience with micro-frontend architecture.

Why should you join Proton?

• Be part of a movement -Proton is not just a product or service but a community-driven movement united by a shared vision of online freedom. Our services are open source, audited, and supported by community contributions. We give back to our community by maintaining core encryption libraries and by supporting other organizations furthering the same goals as us.Proton is free, open source, neutral, independent, and community first, while remaining financially sustainable.
• Work with smart and dedicated people -Our team is diverse, collaborative, and tight-knit with people coming from all walks of life, including many of the world’s top academic institutions and organizations, such as MIT, Harvard, Stanford, Caltech, Cambridge, and ETH.
• Join a strong brand -Our encrypted email service - ProtonMail - has grown to be a staple of online security and privacy. Proton has been featured in multiple popular television and film productions, such as Mr. Robot, Knives Out, Sounds of Metal, and more.
• Grow with us -We’re one of Europe’s fastest-growing startups, doubling in size every year. Our growth gives you limitless career and educational opportunities as well as the opportunity to work side-by-side with many world-leading experts in their fields.
• Have your voice heard -We value your opinion and encourage you to speak up and share your ideas and thoughts. At Proton, no problem is someone else’s problem. We collectively strive to do the right thing and be the undisputed best in the world at everything we do.
• Benefits –these vary by location and type of contract but expect support on your vacation, parental leave, refreshment if working from the office, learning and development opportunities, equity for shared success, flexible working hours and remote work, company events and team building activities.

Proton does not accept unsolicited resumes from any sources other than directly from a candidate. Proton will not pay a fee for any placement resulting from the receipt of an unsolicited offer, even in a situation when the relevant candidate is employed by Proton.