Senior Fullstack Engineer (TS/React)

Senior Fullstack Engineer (TS/React) About the role As a Senior Fullstack Engineer, you’ll play a key role in building and evolving the web and mobile applications that power Equitable Earth’s products. Working closely with the Tech Lead, Product Manager, and wider Product & Engineering team, you’ll take ownership of features and technical initiatives, contribute to technical decisions, and help raise the bar for engineering quality across the team. Beyond your own delivery, you’ll help strengthen our engineering culture through mentoring, code quality practices, knowledge sharing, and thoughtful use of AI in the development workflow. This role is fully remote, with working hours that significantly overlap with French time zone. What you’ll do Product Development Design, develop, and maintain features across our web and mobile applications using TypeScript, React, AdonisJS, NestJS, and React Native Own features end-to-end, from understanding requirements and technical design through implementation, testing, deployment, and iteration Refactor and improve our codebase to strengthen quality, reliability, and performance Engineering & Collaboration Write clean, well-tested code and contribute to strong engineering practices through code reviews, pair programming, testing, and CI/CD Work within our fluid feature crew system, contributing as a team member and taking the lead on feature crews and initiatives when appropriate Mentor and support other engineers, sharing knowledge and helping raise the technical bar across the team Contribute to a collaborative engineering culture and continuously improve our ways of working AI & Innovation Use AI tools beyond coding assistants, including AI agents and MCP servers, to improve developer productivity, code quality, and problem-solving Identify opportunities to apply emerging AI technologies to our products and engineering workflows What success looks like Within 1 month, you’ll have built strong relationships across the Engineering team, become familiar with our ways of working and development standards, and developed a high-level understanding of our web and mobile applications, their architecture, and key features. You’ll already be contributing to well-scoped work with increasing autonomy. Within 3 months, you’ll be fully comfortable with our engineering workflows and technical stack, understand how our main applications fit together, and be able to independently scope, implement, test, and ship features. You’ll be actively contributing to code reviews, technical discussions, and team collaboration. Within 6 months, you’ll feel fully at home in the team, product, and codebase. You’ll be operating as a trusted senior engineer, taking ownership of significant features or initiatives, contributing to technical decisions, mentoring others, and helping improve the quality and effectiveness of how we build software. What we value for this role Technical experience 5+ years of proven experience as a Fullstack Engineer, with strong expertise in TypeScript, React, and backend development Excellent technical mastery across software engineering, including clean and maintainable code, testing, debugging, APIs, version control, architecture, and system design Strong experience with GitHub Actions and CI/CD workflows, with a focus on reliable, scalable, and high-quality delivery Proven track record of technical ownership, leading complex features or projects end-to-end, making sound technical decisions, and driving initiatives forward Experience mentoring other engineers and raising engineering standards through code reviews, technical guidance, and knowledge sharing Familiarity with AdonisJS and NestJS is a plus Experience using AI in development, ideally going beyond coding assistants into AI agents, MCP servers, tool calling, AI platforms, or agentic workflows Fluent English, French is a plus Soft skills and mindset Strong leadership and ownership, with the ability to drive initiatives forward autonomously and bring others along Collaborative and supportive, with proven experience mentoring and helping other engineers grow Proactive and influential, able to challenge ideas constructively, propose improvements, and drive positive change Strong problem-solving skills, with the ability to navigate ambiguity and make pragmatic technical decisions Clear and effective communicator, comfortable working with both technical and non-technical stakeholders Curious and adaptable, with a strong learning mindset and enthusiasm for emerging technologies Open to feedback, with the maturity to give and receive constructive feedback and continuously improveWhat we offer Starting date: October/November 2026 Type of contract: Permanent, full-time Location: This position is remote only. A significant overlap with French business hours is required. Compensation: The final compensation offered will be contingent upon role, level and location. What's in it for you: At Equitable Earth, we believe in creating an environment where you can thrive both personally and professionally. Here's what you can look forward to when joining our team: A fully remote setup - Work from anywhere that inspires you and fits your lifestyle. A collaborative, multicultural workspace - Join a diverse team that shares a passion for nature, meaningful work, and supporting one another. Flexible hours and autonomy - We trust you to manage your time and deliver high-quality results, empowering you to make an impact. Curiosity and growth-driven culture - Embrace opportunities for learning, innovation, and problem-solving through first-principle thinking. The tools to succeed - From a company laptop and a comprehensive health insurance plan to a remote work pass, we've got you covered. Applications Ready to help restore and protect the natural world? Join us! Please fill out the application form and submit a CV in English (PDF format) through our recruitment portal. This role will remain open until a successful candidate is appointed. Equal opportunities Equitable Earth is an Equal Opportunity Employer. We are committed to creating a diverse and inclusive workplace. We welcome applications from candidates of all backgrounds, experiences, abilities, and perspectives, and are dedicated to ensuring equal opportunities for all qualified applicants. Department Dev Locations Europe Remote status Fully Remote