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Mid FullStack Developer (Python/AI)

Mid-level full-stack developer building 'Underwriter OS' — AI agents and applications that transform insurance underwriting. Day to day: Next.js/React frontend, FastAPI/Python backend, LangChain/LangGraph agent orchestration, broker document data extraction, and Azure deployments with CI/CD and MLOps, on a 12-month B2B contract in hybrid Warsaw.

AI Azure CI/CD CRM Data Science +21 skills

up to 120 PLN / hr

Java Backend Developer – Bankowość Elektroniczna (Hybrid/Remote)

Java backend developer joining a long-term corporate banking project delivered by Edge1S for one of Poland's largest universal banks. Day to day: building Spring Boot microservices with hexagonal architecture and DDD, using SOAP/REST, Kafka, and relational databases, on a hybrid setup with one office day per week.

AI Docker Java Kafka Kubernetes +4 skills

Java Backend Developer | Branża Bankowa

Mid/senior Java backend developer building a modern corporate e-banking platform for one of Poland's largest banks, in a hybrid model (~1 day/week from client office). Core stack: Java 11+, Spring Boot 3.5+, microservices with DDD/hexagonal architecture, REST/SOAP, Kafka, PostgreSQL/Oracle.

AI CI/CD Docker Domain-Driven Design (DDD) Hibernate +13 skills

Senior Software Engineer with Python and Go (f/m/x)

Senior developer designing middleware, integrations, and CI/CD components that automate enterprise platforms like GitLab and Jira. Day to day: building Python/Go services, APIs, and automation tooling for the software delivery lifecycle, deployed on cloud platforms like Kubernetes, OpenShift, and Azure.

API Automation Azure Bash CI/CD +13 skills

Veeam Software, Inc.

Software Developer in Test (Python)

Europe Licensed UK sponsor H-1B sponsor history

Software Developer in Test at Veeam in Warsaw (hybrid), building and maintaining automated tests for Veeam's data protection products. Day-to-day involves Python test automation, analyzing product source code, and supporting testing infrastructure with tools like GitLab, Azure DevOps, TeamCity, and TestRail.

AI API Automation AWS Azure +20 skills

Python Developer for High-Scale Data Platforms (Hybrid)

Backend developer at Gemius in Warsaw (hybrid) building and supporting high-scale, high-load data platforms in Python/Django: designing architecture, working with MySQL, Cassandra, ClickHouse, RabbitMQ and REST APIs, plus mentoring and code review. Requires 5+ years' experience and fluent English; Apache Spark is a plus.

API Cassandra ClickHouse Django MySQL +4 skills

Backend Developer

Despite the Backend Developer title, this is a security architecture role at EPAM in Poland: the person defines security architecture assessments and HLD/LLD documents for payment transformation programs, designs secure API/microservice integrations, and supports delivery teams. Core tech includes OAuth2, OIDC, SAML2, mTLS/PKI, encryption, HSM, and PSD2/PCI DSS/SWIFT CSP compliance.

API CI/CD Cloud Container Security Design Patterns +12 skills

Senior Python Developer & Data Engineer

Luxoft is hiring a senior Python developer & data engineer in Kraków to lead the build of a new data and application platform for an investment-banking client: designing Python back-end services, PySpark/Databricks ETL pipelines, and Azure DevOps CI/CD, while mentoring the team. Requires 10+ years of experience including Oracle SQL tuning, Linux, and Autosys.

Agile API Azure Bash CI/CD +14 skills

Senior Python Developer — Data Platform & API Lead

A senior Python developer leads the build of a new data and application platform for an investment banking client, designing back-end services, optimizing Databricks data pipelines, defining RESTful APIs, and implementing CI/CD in Azure DevOps while mentoring the team.

Agile API Azure Azure DevOps CI/CD +5 skills

python developer in high-scale data systems

A senior Python backend developer at Gemius who designs, develops, and optimizes highly available systems that process billions of data records, including distributed databases and messaging integrations, while making architectural decisions and mentoring the team. Core stack: Python/Django, MySQL, Cassandra, ClickHouse, RabbitMQ.

API Big Data Cassandra ClickHouse Django +6 skills

Expert Python Developer

j-labs is hiring an Expert Python Developer in Kraków (hybrid, 2-3 days/week in the office) for a long-term project building Python backend services for business automation, data processing, and AI applications. Day to day: designing FastAPI services, orchestrating LLM-based AI workflows with LangGraph/LangChain, code reviews, CI/CD, and production support.

Agile AI API Asyncio CI/CD +17 skills

Mindbox Sp. z o.o.

Lead Python Developer

HybridEuropeContractLead

Mindbox is staffing a Lead Python Developer for a Financial Engineering project within Global Risk Analytics (wholesale credit risk). Day to day: build Python platforms, large libraries and testing frameworks, and optimize risk-model deployment workflows. Hybrid (1 day office / 4 remote) from Kraków; B2B or employment contract.

Analytics Model Deployment Python

Python Developer

A Python developer in Wrocław building cloud-native applications and data flows on Azure — writing secure, scalable services with PostgreSQL, CI/CD (GitLab), messaging via Azure Service Bus, and using AI-assisted tools like GitHub Copilot for coding and troubleshooting.

Agentic AI AI Azure Azure Data Factory Azure Functions +13 skills

Envirly by Quantifier

Full Stack Developer: AI‑Driven SaaS for Compliance

Full-stack developer at Envirly by Quantifier building an AI-driven SaaS compliance product: developing web applications end to end across frontend, backend, APIs and databases, translating business needs into functional modules, and leveraging AI coding tools such as Cursor, Copilot and Claude Code.

AI API Claude Code

Peoplemore P.S.A.

Senior Full-stack Developer (Vue.js,.NET, AI)

RemoteEuropeContractSenior

Senior full-stack developer at a Polish software house, building Vue.js frontends and .NET backends with heavy use of AI coding assistants (Claude Code, Cursor, Copilot), plus independently owning CI/CD pipelines. B2B contract at 120-170 PLN/h, remote-friendly with an office in Kraków.

AI CI/CD Claude Code .NET GitHub +4 skills

120 – 170 PLN / hr

full stack developer for enterprise web applications

Builds and maintains enterprise web applications for a client in a complex IT environment, with occasional on-site work in Warsaw: backend in C#, ASP.NET Core / .NET 8 with Entity Framework and SQL Server, React/TypeScript front ends, Azure DevOps CI/CD, IIS/containerized hosting, security work (SAML 2.0, Entra ID, Checkmarx), and second/third-line support in Agile/Scrum.

Agile Authentication Azure Azure DevOps CI/CD +21 skills

4901 Accenture Services Sp.zoo Company

Senior Full Stack Developer (Node.js, React)

EuropeContractSenior

Senior full-stack developer at Accenture Poland designing and evolving high-throughput real-time streaming and time-series data platforms for international clients. Day-to-day involves building scalable solutions with React, Node.js and TypeScript, applying AI-assisted development, and collaborating with business and technology stakeholders.

AI Automation Cloud Cloud Native Cypress +8 skills

Remote Python Developer-Backend/Frontend & Test Automation

Build the next version of SlashDB at VT Enterprise: contribute backend and frontend code, test automation, and architectural design within an international Agile team. Core stack is Python, SQL, and web technologies, working from the Warsaw office with flexible hours and a remote option.

Agile Automation Cloud Python SQL +1 skills

Senior Frontend Developer React TypeScript

Senior Frontend Developer building enterprise-scale React/TypeScript applications in Warsaw: implementing UI/UX designs into reusable components, integrating with REST/GraphQL APIs, ensuring accessibility (WCAG) and cross-browser performance, and writing unit/integration tests in an Agile team. Hired via recruitment firm DCG for a partner, with financial-services experience a plus.

Accessibility Agile API CI/CD Figma +10 skills

Aristocrat Poland LLC

Frontend/Games Developer

Builds and maintains mobile and web-based HTML5 games for Aristocrat's iLottery products, optimizing performance across devices and browsers while collaborating with artists and product managers in an Agile team. Core stack is HTML5 and JavaScript, with PIXI, TypeScript and Spine animations as nice-to-haves.

Agile HTML JavaScript Scrum TypeScript