Backend Engineer - Marketing Technology

About Proton

Founded in 2014 by CERN scientists, Proton stands for privacy as a fundamental human right. Starting with the world's largest encrypted email service, Proton Mail, the company has expanded to include Proton VPN, Drive, Pass, and Calendar—tools used globally to enhance user privacy, resist censorship, and protect personal data. Proton operates profitably and independently without venture capital control, employing over 500 individuals from top-tier academic and industry backgrounds across more than 50 countries. The team maintains a fast-paced, low-hierarchy work environment that values meaningful impact over appearances.

Job Purpose

The Backend Engineer for Marketing Technology will develop core components of Proton’s marketing tech stack. This role involves driving the design, development, and delivery of backend systems, participating in a newly established cross-functional team, and collaborating closely with stakeholders across business units, development, marketing, and sales. The engineer will help identify opportunities where technology can improve conversion rates, process efficiency, and user experience, playing a key part in the company's growth journey.

Responsibilities

• Conduct research, plan, assess, and implement marketing technology solutions primarily using Python and PHP.
• Support and train engineers across various business units to integrate company-provided SDKs.
• Maintain the marketing technology stack including regular updates, enhancements, and ensuring security and privacy compliance.
• Collaborate with teams to pinpoint technological opportunities to boost conversions, efficiency, and user experience.
• Serve as a technical contact and subject matter expert regarding marketing technology systems and queries.

Requirements

• Proven experience architecting and delivering high-quality software systems.
• Strong background developing scalable backend solutions using Python or PHP.
• Comprehensive knowledge of SQL databases and queries.
• Solid understanding of HTTP and RESTful web services, including both API development and consumption.
• Experience integrating diverse internal systems with commercial off-the-shelf products.
• A growth mindset with curiosity and passion for continuous learning.
• Excellent interpersonal and communication skills, capable of building relationships with multiple stakeholders and influencing across organizational levels.
• Ability to juggle multiple priorities and projects while delivering software that meets quality, schedule, and budget targets.
• Previous experience or familiarity with marketing technology platforms or tools is highly desirable.

Benefits

• Engage in meaningful work that directly impacts millions who trust Proton for privacy protection, operating independently of advertisers, conflicting investors, or government influence.
• Collaborate with a diverse and highly talented team from prestigious institutions and organizations worldwide.
• Access to appropriate hardware and software resources to facilitate top performance.
• Robust learning and development opportunities ensuring rapid career growth and real ownership from the outset.
• Comprehensive employee benefits including health coverage, retirement plans, paid leave, and wellness programs.
• Stock options granting employees ownership stakes and shared success in the company’s growth.
• In-person collaboration in offices located in Geneva, Zürich, Barcelona, London, and other cities to foster teamwork.
• Daily office-provided meals and snacks to support focus and productivity.
• Coverage for commuting costs including public transport, biking, or parking allowances.
• Flexible working arrangements allowing ownership of schedules prioritizing results over fixed hours.

Diversity and Inclusion

Proton is dedicated to fostering an inclusive workplace that respects and values diversity across all dimensions including race, ethnicity, gender, age, sexual orientation, disability, and socioeconomic background. The company promotes equal opportunities and a culture of open dialogue, continuous learning, and mutual respect. Reasonable adjustments are available throughout the hiring process upon request.

Candidate Privacy

Applicant data is securely stored during recruitment in compliance with privacy policies and retained for future hiring opportunities when relevant. Candidates may contact Proton’s privacy team to access, correct, or request deletion of their information. Proton does not accept unsolicited resumes from third parties and does not remunerate for candidate placements sourced outside direct applications.

Compensation Information

• Paris-based candidates: gross annual salary ranges from 43,000 to 69,000 EUR.
• Prague-based candidates: gross annual salary ranges from 863,000 to 1,500,000 CZK.
• Compensation for other locations will be determined during interviews based on qualifications and experience.