Lead Fullstack Engineer (Python & JS)

We're currently looking for a Lead Fullstack Engineer (Python & JS) to join the core product team of Ezra Climate - a fast-growing US-based startup that’s building tools to simplify and accelerate climate financing. Backed by top-tier investors, Ezra operates at the intersection of technology, finance, and climate action, with a mission to help individuals and businesses invest in projects that benefit the planet.

As a Lead Fullstack Engineer, you will play a key role in shaping the technical foundation of the platform, owning full product features from backend to frontend, and collaborating closely with the founding team.

⚠️ Please Note

We are hiring engineers located in Belarus only or those relocated to the LATAM region.

The team operates on a US time zone, so you’ll need to work approximately from 18:00 to 02:00 Minsk time (GMT+3), if located in Belarus.

Please make sure this schedule fits your availability before applying.

What You’ll Do:

Backend & API Development:

• Build scalable, high-performance backend services using Python and FastAPI.
• Work with Pydantic and SQLAlchemy (or similar ORMs) for data modeling and database interaction.
• Maintain clean, versioned RESTful APIs; strong experience with PostgreSQL and Supabase.

Distributed Systems & Workflows:

• Design robust, fault-tolerant workflows using Temporal or similar tools.
• Implement async task processing, caching strategies (Redis), and secure auth layers (e.g., JWT).

AI-Native Frontend Development:

• Build real-time, interactive UIs with React/Next.js and TypeScript.
• Use WebSockets or Server-Sent Events (SSE) for live data and conversational interfaces.
• Leverage Tailwind CSS, shadcn/ui, and tools like Zustand, React Query, or SWR.

Testing, Infrastructure & Observability:

• Ensure code quality via unit/integration tests (pytest, Jest, React Testing Library).
• Containerize and deploy apps using Docker, Vercel, AWS, or GCP.
• Monitor performance and issues with tools like Sentry and OpenTelemetry.

Security & Compliance:

• Build with a security-first mindset, applying OWASP best practices.
• Experience operating within SOC 2 or similar compliance frameworks is a plus.

Technical Leadership:

• Own features end-to-end - from technical design through deployment.
• Collaborate closely with Product, Design, and AI/ML teams to shape technical solutions.

What We’re Looking For:

• 7+ years of fullstack engineering experience, ideally in startup or fast-paced environments.
• Proven expertise in Python, FastAPI, React/Next.js TypeScript, and scalable architectures.
• Deep knowledge of distributed systems, API design, and real-time web interfaces.
• Experience with PostgreSQL, Redis, Docker, Temporal, and cloud platforms.
• A strong focus on quality, observability, and security in production systems.
• Excellent communication skills and ability to document technical decisions clearly.
• Prior experience working in cross-functional, globally distributed teams is a plus.
• Ability to freely communicate in English - Upper-intermediate level at least.

What We Offer:

• Competitive compensation
• English-speaking environment
• Opportunities for rapid career development in a hyper-growth startup
• Sponsored career development
• English lessons
• Sport compensation
• Medical + Dental insurance
• Cool office in the city center
• Additional 3 paid sick days
• Flexible work start time
• Coffee, fruits, snacks, etc.
• Gifts on birthdays, holidays and special occasions
• Lots of unforgettable team-building events

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Вакансия планируется на перспективу.