Senior Full-Stack Engineer

Senior Full-Stack EngineerWe are:On a mission to ensure businesses never fail due to a third-party incident.A stealth startup backed by tier 1 VCs, already working with paying customers, and aiming to triple our team size in the next two years.Driven by transparency - we give top talent the full context to own their work.We value spontaneous discussions over formal meetings and believe working together in the same room is the fastest (and most fun) way to solve complex challengeDisrupt a market that’s been stagnant for years - and shape it with a solution the industry has never seen before.We move fast, building on a modern, scalable stack designed for high-performance data processing and ML/LLM operations - Golang, Huggingface, LangSmith, gRPC, ConnectRPC, Bufstream (Kafka-like, streaming platform), Redis, Kubernetes, Terraform, and ArgoCD. We heavily invest in DevEx with tools like Cursor and Okteto (read our case-study here: https://www.okteto.com/customers/lema-ai/) to ensure engineers can focus on delivering value.You Are:A 5+ year web engineer who thrives on building user-facing products from scratch and tackling tough engineering challenges.Experienced in shaping web UI architecture that scales (FE+BE) and in leading technical direction for a small team.Able to take a product idea or workflow and independently turn it into a polished, functioning experience while mentoring others to do the same.Confident and excited to refactor and delete code.Comfortable running code reviews, setting engineering standards, and coordinating across product, design, and infrastructure.You will:Be among our first 20 employees, helping shape both the product and the team foundations of a fast-growing startup.Define and evolve our web architecture, design system, and engineering best practices.Own features end-to-end: from initial concept and UX discussion to implementation, polish, deployment, and observability.Tackle complex, large-scale challenges in event-driven architectures and real-time data processing.Continuously improve developer workflows: evaluate gaps, introduce and integrate new tools, automate repetitive steps, and champion best practices that boost velocity and quality.Lead and mentor a small group of engineers: drive planning, break down work, ensure delivery quality, and help hire the next wave of talent.Collaborate with top-tier engineers, PMs and designers who’ve built large-scale systems at top companies.