5356 English-speaking jobs in Masovian Voivodeship

Lead/Principal Go Developer to design and implement a high-load, low-latency real-time bidding platform. Responsibilities include building Back-End services, developing bidding agents, and integrating with data pipelines. Requires 7+ years of experience as a Back-End Developer with strong Golang and distributed systems experience.

Senior Performance Marketing Specialist needed for high-budget e-commerce projects. Manage Meta and Google Ads campaigns, analyze data, and collaborate with creatives to optimize performance. Requires 3+ years experience, strong analytical skills, and proficiency in GA4, Looker Studio, and Excel/Sheets.

Senior Meta Ads Specialist to manage performance campaigns for e-commerce clients. Requires 2+ years experience, expertise in Meta Ads, international markets, and analytical skills. Responsibilities include campaign optimization, data analysis, and collaboration with creative teams.

Lead a complex international IT transformation program for a global organization. Drive project ownership, governance, and delivery across a multi-vendor environment.

Lead a complex international IT transformation program for a global organization. Drive project ownership, governance, and delivery across a multi-vendor environment.

PAYBACK is unique worldwide in data-based marketing. With the ability to develop digital business models and implement technical trends, we are pioneers of the data economy. The technical solutions for our 31 million customers relating to the PAYBACK program are designed and operated in-house. To this end, we work with the latest technologies and in a cross-functional and agile way.

Lead IT implementation or advisory projects for the insurance sector, combining consulting, project management, and insurance business expertise. Manage projects from initiation to closure, overseeing timelines, scope, budget, risks, and dependencies. Supervise business analysis and solution design, act as a team leader, and build client relationships.

Senior ML Ops Engineer to enhance and maintain machine learning operations and infrastructure for a pharmaceutical client. Requires 4+ years experience in Git, Linux, Bash scripting, Python, Docker, Kubernetes, CI/CD pipelines, infrastructure automation, and cloud infrastructure. Experience with MLOps tools, machine learning, and DevOps is also needed.

Senior Frontend React Developer will design and own business-critical user experiences for agentic AI products. You will build production Next.js applications with complex state, real-time AI interactions, and multiple layers of enterprise functionality.

About Shelf The enterprise is going agentic and we are creating a unique operating system for an automated future. Most AI agents break the moment they hit real business complexity. That's why we built a platform that models a company's policies, workflows, and operational logic into an AI Data Model. Shelf enables AI Agents to reliably reason and deliver precise and reliable outcomes at scale.

Experienced QA Lead to design test strategies, mentor a team of testers, and introduce modern QA tools and practices for mobile and IoT projects. Collaborate with developers, PMs, and clients on acceptance criteria and testing coverage.

Senior Android Developer needed for freelance, time & material projects. Design, build, and maintain Android apps that communicate with hardware peripherals over BLE. Must have 3 years of experience writing production Android code in commercial projects, strong Kotlin skills, and hands-on BLE integration experience.

Lead web and mobile projects for IoT, wearables, and connected devices. Manage client relationships, project scope, and cross-functional teams.

Freelance Senior Flutter Developer to contribute expertise to diverse IoT projects. Requires advanced Flutter and Dart knowledge, working knowledge of iOS and Android, and at least B2 English.

The customer is a consulting company that supports organizations in improving HR processes, compensation and benefits frameworks, and internal management systems. The company also provides advisory services related to digital transformation, automation, and data-driven decision-making to help businesses optimize operations and implement modern enterprise solutions.

Warsaw (Onsite – near Metro Plac Wilsona) B2B About Silk Software House Silk Software House builds and maintains business-critical web applications for fintech, payments, and enterprise clients. We value ownership, strong technical judgment, and developers who can design solutions, not just implement tasks.

Warsaw (Onsite – near Metro Plac Wilsona) B2B About Silk Software House Silk Software House is a Warsaw-based development company delivering high-quality fintech, e-commerce, and enterprise systems for long-term clients. We focus on clean architecture, pragmatic engineering, and software that performs well in production.

Senior Java Developer will design and implement backend architectures using Java 11 and Spring. Responsibilities include leading development of microservices and APIs, optimizing performance, and mentoring other engineers.

Full Stack Engineer to develop, scale, and maintain a platform integrating with legacy defense and supply chain systems. Responsibilities include full-stack development, legacy system integrations, and customer-driven feature delivery. Requires experience delivering projects, proficiency in TypeScript, JavaScript, SQL, and software engineering best practices.

Lead visual and brand design for a product used by researchers and learners. Own end-to-end design for core product experiences and define the design system. Collaborate with engineering and conduct user research to ensure high-quality product development.