Full Stack Engineer (Python/React/Typescript)

Engg; Polska; Hybrid; PLN 180,000 - 240,000; Full time

Job summary

Capco in Krakow is hiring a Full-Stack Engineer specializing in Python, React and TypeScript for a project in investment banking. You will architect and implement scalable backend services and secure APIs while collaborating with frontend engineers on API contracts and user journeys.

The role emphasizes AI-enabled features, including LLM integrations, RAG workflows and AI safety practices, with a focus on production-grade software and robust documentation.

Qualifications

• Strong hands-on Python development experience building backend applications and RESTful APIs.
• Frontend experience with React, TypeScript, JavaScript and modern UI libraries.
• Experience with relational and NoSQL databases.
• Experience with AI solutions using LLM APIs and RAG patterns.
• Cloud-hosted apps, containers and CI/CD pipelines.
• Secure development practices including secrets management and access control.
• Excellent problem-solving and clear communication.

Responsibilities

• Design, build, test and maintain secure, scalable backend services and APIs using Python.
• Deliver production-quality code with version control, testing, CI/CD and documentation.
• Integrate services with internal platforms, data sources and external APIs with proper auth and resilience.
• Develop AI-enabled features with LLMs, RAG, prompts and agent workflows.
• Monitor performance, investigate issues and improve reliability using logs and traces.

Skills

Python development

React

TypeScript

RESTful APIs

CI/CD

Cloud platforms

AI/LLM integration

Tools

FastAPI

Flask

Django

pytest

Git

Docker

Kubernetes

LLM APIs

Job description

# Full Stack Engineer (Python/React/Typescript)Capco · Poland - CracowLocation: Poland - CracowFunding: N/APosted: Oct 29, 2026Capco is hiring a Full Stack Engineer (Python/React/Typescript) based in Poland - Cracow. Every apply link on Engg.space goes straight to the company's own careers page - no recruiter middleman, no generic job-board form.Apply directly at Capco## Role detailsCAPCO POLAND \\*We are looking for Poland based candidate. At Capco Poland, we’re not just another consultancy - we’re the spark behind digital transformation in the financial world. As a global leader in technology and management consulting, we thrive on helping clients tackle the toughest challenges across banking, payments, capital markets, wealth, and asset management. Role Overview We are looking for an experienced Full-Stack Engineer to join Capco on a project within investment banking. The ideal candidate brings strong Python backend development expertise, hands-on experience with React and TypeScript , and a solid understanding of scalable APIs and cloud technologies. Experience with Generative AI, LLMs, RAG and AI agents is also important. You'll build secure, production-ready applications, combining strong engineering practices with a proactive, collaborative approach to problem-solving. Key Responsibilities Design, build, test and maintain secure, scalable backend services and APIs, primarily using Python. Deliver production-quality code through sound engineering practices: version control, automated testing, code review, CI/CD, and clear technical documentation. Integrate services with internal platforms, data sources and third-party APIs, handling authentication, authorisation, resilience, and error management appropriately. Build and support AI-enabled features, including integrations with LLMs, retrieval-augmented generation (RAG), prompt workflows, and agentic patterns. Implement appropriate AI evaluation, monitoring, guardrails, and human oversight to ensure solutions are reliable, secure, and used responsibly. Investigate and resolve defects, performance issues, and operational incidents; use logs, metrics, and traces to improve reliability. Work with product, design, data, and engineering colleagues to turn requirements into practical, maintainable technical solutions. Contribute to technical design discussions, estimate work realistically and deliver agreed outcomes to time and quality expectations. Keep up to date with relevant engineering, AI and security practices, applying them pragmatically to day-to-day delivery. Required skills: Strong hands-on Python development experience, including building backend applications, services, and RESTful APIs. Experience with common Python frameworks and tooling, such as FastAPI, Flask or Django; pytest; dependency/package management; and asynchronous programming where relevant. Front-end development experience with React, TypeScript, JavaScript, and modern UI/component libraries. Experience building full-stack applications or collaborating closely with frontend engineers on API contracts and user journeys. Good understanding of software engineering fundamentals: clean code, object-oriented and/or functional design, testing, debugging, API design, and source control. Experience working with relational and/or NoSQL databases, writing efficient queries and designing data models. Practical experience building or integrating generative AI solutions using LLM APIs and orchestration frameworks. Understanding of RAG, embeddings, vector stores, prompt design, agent workflows, model evaluation, and AI safety/guardrails. Experience with cloud-hosted applications, containers, and CI/CD pipelines. Awareness of secure development practices, including secrets management, access control, data protection, and dependency security. Strong analytical and problem-solving skills, with the ability to work through ambiguous technical issues. Clear written and verbal communication, able to explain technical decisions to engineers and non-technical colleagues. Nice to have: Familiarity with observability tooling, such as application logging, monitoring, and distributed tracing. Experience working in regulated, enterprise-scale or security-conscious environments. Recruitment Process: HR Interview with the recruiter Technical Interview Client Interview Feedback and offer #LI-HYBRID