Lead Frontend Developer (w/m/d)

about source GmbH

Lead Frontend Developer responsible for overseeing frontend development at about:source. Working with a team to create software tools for societal initiatives and NGOs while ensuring technical excellence.

Posted 5/13/2026full-timeRemote • 🇩🇪 GermanySeniorWebsite

Tech Stack

Tools & technologies

JavaScriptReactRuby on RailsTypeScriptVue.js

About the role

Key responsibilities & impact

You take ownership of further developing robust applications.
You find viable technical solutions and support other developers in making good decisions.
You assume technical responsibility for the frontend area within the team.
Together with frontend-focused developers you evolve and maintain strong standards.
You oversee releases and deployments with a clear overview: coordinate with stakeholders, support team members, and ensure solutions are delivered reliably.
You plan tests so that relevant risks become visible, specifically check for vulnerabilities, and document results so that clear next steps follow.
You analyze incidents in a structured way, quickly narrow down root causes even under pressure, and help minimize outages and follow-on impacts.

Requirements

What you’ll need

You have experience developing web applications with JavaScript or TypeScript and working in agile teams (Scrum, Kanban).
You have used Vue.js, React, or comparable frontend frameworks.
You contribute solutions that enable us to build and maintain long-lived, complex projects.
You have ideas about how to divide responsibilities between frontend and backend development.
You are confident taking technical responsibility for the further development of Campact's design system (Camper).
You are able to understand, document, and optimize complex structures.
You communicate clearly and respectfully in German (at least C1 level).
You care about security and data protection and observe the OWASP Top Ten web application security risks when developing.
Experience developing frontends in the Rails ecosystem is a plus.

Benefits

Comp & perks

The opportunity to apply your skills to important societal change.
Friendly and motivated colleagues who care about their work — and their free time.
An annual multi-day team retreat where we work on shared questions.
As a steward-owned company we follow a transparent and fair salary model, which also applies to you.
Mobile working and home office with a subsidy for equipping your workspace.
Possibilities for workation, special leave, and sabbatical according to company policy.
Flexible, family-friendly working hours and 30 days of vacation per year (based on a 5-day week).
Professional training and personal development are actively supported.
Flexible benefits budget for non-cash benefits, public transport and childcare subsidies, and the option to subsidize JobRad bike leasing.
Company pension scheme and health insurance.
Meaningful work, complex software architectures, and a culture where your opinion matters: if that sounds like your ideal setup, we look forward to meeting you!

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Hard Skills & Tools

JavaScriptTypeScriptVue.jsReactRailsagile developmentScrumKanbanweb application securityOWASP Top Ten

Soft Skills

ownershiptechnical responsibilitycommunicationcollaborationproblem-solvinganalytical skillsdocumentationrisk managementincident analysispressure handling