Senior Full Stack Engineer

This is a fully remote position, open to applicants in Estonia.

📋 Description

• Develop secure and scalable full-stack product functionalities.

• Architect data models, APIs, integrations, and backend infrastructure.

• Construct dependable data pipelines with rigorous validation and observability.

• Deploy high-value, trustworthy AI/LLM-driven features.

• Create secure agentic workflows incorporating scoped tools, permissions, logging, evaluations, and failure management.

• Troubleshoot issues across ingestion, transformation, database, API, UI, and AI contexts.

• Design systems emphasizing security, privacy, auditability, and observability.

• Collaborate on data ingestion, transformation, storage, APIs, product interfaces, AI workflows, agentic systems, and observability.

⛳️ Requirements

• Over 8 years of experience in building production software.

• Proficient in TypeScript, React, and SQL.

• Extensive skills in backend architecture, API development, data modeling, and production debugging.

• Significant experience with data pipelines, integrations, or systems heavily reliant on data.

• Proven experience in developing systems that manage sensitive, regulated, and high-trust data.

• Practical experience in delivering robust AI/LLM-powered functionalities.

• Strong comprehension of evaluations, hallucinations, malformed outputs, retrieval quality, latency, cost, model drift, and provider risk.

• Discernment in when to leverage an LLM, retrieval methods, enhanced data foundations, or deterministic code.

• Exceptional written and verbal communication skills in English.

• High sense of ownership, agency, and humility.

• Knowledge of prompt injection, permission boundaries, data exfiltration risks, secrets management, audit logs, and human-in-the-loop reviews.

• Familiarity with access control, Postgres RLS, PII management, secrets management, audit trails, least privilege, secure integrations, and safe usage of third-party APIs.

• Experience with Supabase, Postgres RLS, Deno, Modal, embeddings, vector search, transcription, GPU workloads, or related infrastructure is a plus.

• Background in data validation, reconciliation, lineage, observability, or audit systems.

• Experience with AI evaluations, AI observability, agent testing, or red-teaming AI systems.

🏝️ Benefits

• Security through thorough client vetting to reduce risks and ensure reliability and prompt payments.

• Career support and help in seeking new project opportunities.

• Legal assistance concerning independent contractor or sole proprietorship status, taxes, and related processes.

• English language courses.

• Opportunities for professional growth.

• Team-building activities.

• Flexible work hours.

• 29 days of paid time off (18 working days annually plus all national holidays).

• 10 paid recovery days.

• Comprehensive financial and legal support for independent contractors.

• Complimentary English classes with native speakers or Ukrainian instructors.

• Dedicated HR support.