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Backend developer Java
Backend developer building Java services with SQL databases, message brokers, and container orchestration in a Warsaw-based team.
Fullstack Python Developer
Develops full-stack financial applications using Python/Django, integrating frontend (Angular) with backend services, databases, and cloud infrastructure for banking/insurtech clients.
Sr AI/Data Science Engineer
Senior full-stack AI/ML engineer building enterprise-scale applications with Vue.js, TypeScript, Python/Flask, PostgreSQL, and cloud platforms, while developing and deploying machine learning and deep learning algorithms.
Sr. Full Stack Software Engineer (React, TypeScript, Go, AWS, Kubernetes)
Senior Full Stack Engineer building React/TypeScript frontends and Go APIs on AWS with Kubernetes, implementing CI/CD pipelines and ensuring WCAG-compliant, secure solutions for a Federal Government client.
Staff Cloud Backend Engineer (Database)
Design and optimize high-performance SQL and NoSQL databases, including time-series and OLAP/OLTP systems, for a company building AI-enabled software-defined vehicles.
Senior Full-Stack Developer — AI-Driven HealthTech & Data
The Senior Full-Stack Developer will design and build AI-driven healthtech applications on the Lifecare platform using React, Node.js, and Azure cloud infrastructure.
Senior Full-Stack AI-Driven Developer for HealthTech
The Senior Full-Stack Developer will design and build AI-powered healthcare products using React, Node.js, and Azure. The role involves working across the full stack and implementing DevOps practices to deliver data-driven features.
Senior Software Engineer
Proper is seeking a Senior Software Engineer to own backend services and AI-backed document processing pipelines for their property management accounting platform. The role focuses on building reliable, logic-heavy systems using Go, Python, and TypeScript while ensuring data integrity and observability.
Senior Backend Engineer - Platform Integrations (Monetization)
Senior Backend Engineer builds and maintains integrations between GitLab’s monetization services and enterprise apps like Salesforce and Workato, ensuring reliable API contracts and data integrity for subscription workflows.
Java Developer
Java Developer modernizes a legacy online banking system into microservices for payments, using AI tools while validating outputs.
Senior Software Engineer (m/f/d) Full Stack, Product Engineering
A senior full-stack engineer who collaborates with product, sales, and customer success to solve user problems end-to-end, from discovery to production deployment, using Python/Django (backend) and React/TypeScript (frontend).
DevOps Engineer
Supports a cloud-based fintech platform for accounting firms and financial specialists, focusing on process management, compliance (AML/KYC), and scaling for 3000+ daily enterprise users. Core work involves IaC, CI/CD, observability, and production infrastructure ownership on AWS.
Full Stack Java Developer
This is a 3-month remote contract role for a Full Stack Java Developer. The position requires proficiency in Java, Vue.js, TypeScript, Node.js, SQL, and AWS cloud services.
C++ Developer / Embedded C++ Developer
Develops embedded C++ applications and integrates with Versant DB; core focus on C++ with optional database and embedded systems expertise.
Data Scientist
Easybrain is seeking a Data Scientist to develop and deploy machine learning models for ads monetization, LTV prediction, and game personalization. The role involves end-to-end ownership of models using Python, PyTorch, and LightGBM within a mobile gaming environment.
Senior Backend Engineer- Data Platform
Senior Backend Engineer leads the design and scaling of distributed ETL microservices for Placer.ai’s data export platform, optimizing high-throughput batch/real-time pipelines and collaborating with cross-functional teams to integrate complex data workflows.
Backend Engineer – API Integrationen, Connectoren, Worker/Jobs, Mailer Service, QA
Backend engineer building production API integrations (Box, HubSpot, Microsoft Graph, Asana), queue-driven workers, a mailer service, and QA automation, using Python/Node.js/Go, PostgreSQL, and Docker on a freelance, project-based engagement.