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Founding Full Stack AI Engineer at Pragmatike. Remote Location: Poland. Location:. Fully remote, EMEA / flexible timezone. Start date:. ASAP. Languages:. Fluent English is mandatory. Industry:. AI / Data Infrastructure / B2B SaaS. About the Company. Pragmatike is recruiting on behalf of an early-stage startup building a . distributed AI data infrastructure platform. . The company provides . real-world training data. to AI companies through a global network of 500,000+ contributors across 150+ countries and 100+ languages.. The startup owns the full end-to-end pipeline: collection, automated processing, human-in-the-loop QA, and delivery to top-tier AI labs and technology companies. The focus is on . building scalable, AI-native pipelines. capable of delivering multimodal datasets—audio, image, video, and structured data—at global scale.. The product is operational and validated. The current priority is . scaling the infrastructure, improving AI-powered QA pipelines, and building reliable contributor and client-facing platforms. . The team is fast-moving, product-driven, and values . high ownership and technical excellence. .. Your Responsibilities. Design and maintain . FastAPI backend services. powering the data collection and delivery pipeline. Build and iterate . React interfaces. for internal teams, contributors, and clients. Architect AI-powered pipelines for . quality assurance, classification, and dataset delivery. Own . end-to-end feature delivery. : backend logic, database schema, frontend interface, deployment. Ensure reliability, performance, and observability of . async data processing pipelines. Collaborate closely with ML engineers, DevOps, and the data team to integrate AI systems into production. Set . standards and best practices. for AI-augmented engineering workflows. Contribute to internal tooling that accelerates team velocity and maintains production-grade quality. What You Bring. 3+ years of professional full stack engineering experience in production environments. Strong . Python. skills and hands-on experience building production APIs with . FastAPI. Solid . React. experience, shipping real products to real users. Deep command of . SQL. , including query optimization, indexing, partitioning, and connection pooling. Hands-on . PostgreSQL. experience at scale. Experience with . background task processing systems. (Celery, RQ, SQS, or equivalent). Familiarity with . S3-compatible object storage. , Docker, and REST API design principles. AI-native development workflow — you use AI tools (Cursor, Copilot, Claude) daily, know how to prompt, iterate, verify, and catch errors. Experience building . AI-integrated systems. , pipelines, and production features for model training. Ownership mindset — you ship fast, iterate, and care about code quality. Nice to Have. Experience scaling . global data infrastructure. or contributor networks. Experience with . multimodal datasets. (audio, image, video). Prior early-stage / founding team experience. Exposure to . high-volume, performance-critical systems. Experience integrating AI pipelines into production workflows. Why This Role Will Pivot Your Career. This is a . founding engineer role. at the intersection of full stack engineering and AI infrastructure. You will:. Build . end-to-end systems. that are used by top AI labs and tech companies globally. Work . directly with founders. shaping product, architecture, and technical strategy. Own . mission-critical AI-powered pipelines. for massive, real-world datasets. Gain . rare early-stage experience. , making high-impact decisions that define the trajectory of the company. Master . AI-augmented development workflows. , integrating cutting-edge AI into production-grade software. Take on responsibilities far beyond typical senior roles — your work will be . visible, high-stakes, and career-defining. . Pragmatike is dedicated to a fair, transparent, and inclusive recruitment process. We ensure that no applicant is discriminated against based on age, disability, gender, gender identity or expression, marital or civil partner status, pregnancy or maternity, race, religion or belief, sex, or sexual orientation. In accordance with the General Data Protection Regulation (GDPR), your personal data will be processed lawfully, fairly, and securely. We collect and use your personal data solely for recruitment purposes, including sharing it with our client(s) for employment consideration. You have the right to request access, correction, or deletion of your data at any time. We are committed to maintaining the confidentiality and security of your information throughout the recruitment process..