We’re looking for our third Lead Developer as we grow from 2 to 3 squads. It’s a pivotal moment where we can no longer fit all engineers in one meeting. It’s the perfect time to help shape our team structure and development processes. You’ll play a key role as we expand from a single product to multiple lines, and scale our platform from 2M to 10M weekly payers. Along the way, you’ll tackle challenges in scalability, security, performance, and efficiency, all while helping nonprofits thrive and fueling Zeffy’s growth. 💫

In this role, you’ll get to:

• Be a high impact Individual Contributor: you will lead by example through your efficiency and impact.

• Act as a Hiring Manager to attract and hire the very best developers.

• Lead your squad of developers by running rituals, holding one-on-ones, coaching junior team members, and ensuring the squad meets its goals efficiently.

• Ensure your squad consistently applies Zeffy’s best practices through high-quality coding, thoughtful reviews, coaching, and day-to-day leadership.

• Represent your squad during the General Retro Meeting (Product, Customer Success, Tech, Leadership) and the General Tech Meeting.

• Work with Product Managers and Product Designers to build the simplest solutions.

• Proactively suggest and drive improvements in our tech stack and company-wide processes.

Development Principles at Zeffy:

• We always optimize the ratio impact / effort, it’s what we call Zeffy perfectionism, perfection in impact.

• We build the simplest solution first to validate ideas quickly, keeping the codebase clean without solving problems that don’t exist yet.

• We are organized in 2 months cycle, to make sure we prioritize radically. We set ourselves targets on the 4 following dimensions: efficiency, security, stability and performance.

• Trust and ownership: every target is clear and owned by one person who is flexible to reach it; owned by one person doesn’t mean working alone on it.

• Continuous improvement: We regularly review and refine our processes, promoting a culture of learning and growth.

Our Stack

• Front-end: React (JavaScript), Next.js (TypeScript)

• Back-end: Nest.js (TypeScript)

• Database: PostgreSQL, Algolia

• CI/CD: GitHub Actions, Cypress

• Other tools: GraphQL, TypeORM, Git & GitHub, AWS

• Minimum of 6 years of demonstrated expertise as a full-stack developer, preferably in web-based products or SaaS.

• 2+ years of experience as a lead developer or manager in a full-stack development team.

• Experience of scaling teams and codebases.

• Fluent French, good level of spoken English.

💡 Research shows that candidates from underrepresented backgrounds often don’t apply for roles if they don’t check every box. If this applies to you and you are interested in the position, we’d love to hear from you!

Working at Zeffy will feel like home if 🌱

• You’re driven by ambition at scale: You’re passionate about making a difference and believe technology can empower nonprofits to tackle the world’s biggest challenges.

• You keep it simple: You value clarity and efficiency, knowing that the best solutions are often the simplest ones.

• You’ve got each other’s backs: You collaborate with kindness, communicate openly, and celebrate the successes of those around you.

• Call with Recruiter (30min)

• Meeting with CTO (1.5h)

• Case Study (2h)

• Meeting with both co-founders and Head of Success (1h)

• Reference check

• Job offer

Zeffy is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.