258 English-speaking jobs in Białystok

.NET Developer to support a major pilot program for a leading global provider of DERMS. Responsibilities include product development, system integration, and device integrations. Requires 3+ years of commercial software development experience with .NET, C#, Entity Framework, PostgreSQL, REST APIs, Angular, and Azure. Good English skills (min. B2 level) and ability to work in a team are essential. Experience with OpenADR and Demand Response systems is a plus.

Designs and operates scalable AI infrastructure for LLM inference, prompt management, and evaluation pipelines. Builds self-service tools and APIs to accelerate AI/ML development cycles. Implements evaluation frameworks and monitoring solutions to improve model performance and cost efficiency. Drives adoption of shared platform services to replace bespoke solutions.

Senior UX Researcher will lead end-to-end research projects, uncovering user needs and behaviors through qualitative and quantitative methods. This fixed-term role requires experience with user research methodologies, AI research tools, and data synthesis.

Cerebre seeks a senior UX designer to lead and elevate the user experience for flagship products. This role focuses on UX strategy and execution, including shaping user journeys, conducting research, and translating insights into intuitive product workflows. The ideal candidate has 8+ years of experience in UX research and design, leading design functions within product teams, and designing complex B2B and enterprise products.

Acclaim seeks a WordPress Developer with full-stack skills, including front-end and back-end development. Responsibilities include WordPress maintenance, support, and development of custom websites, plugins, and eCommerce solutions. Must have commercial experience with WordPress, HTML5, CSS3, JavaScript, and Git.

Lead a team of engineers focused on accelerating developer productivity across the CI/CD lifecycle by building platform-oriented application infrastructures and tooling. Manage individual contributors, collaborate with Product teams, and own the outcomes of your unit. Architect and maintain scalable, reliable, and secure internal tooling via infrastructure as code.

Senior UX/UI Designer needed for a 12-month contract to design complex digital banking products. Responsibilities include creating user interfaces, prototypes, and data visualizations while collaborating with cross-functional teams. Requires 5+ years of experience, proficiency in Figma, and fluency in English.

Senior Golang Developer needed for a project focused on building a system to manage frequency drops in power grids using renewable energy sources. Responsibilities include developing microservices, proposing solutions, identifying bottlenecks, and collaborating with other developers. Requires proficiency in Golang, microservices architecture, Docker, Kubernetes, and cloud services.

Senior Data Engineer to build and maintain production-grade data platforms and pipelines using Databricks. Requires 4+ years of experience in Data Engineering and Big Data, proficiency in Python, SQL, and Apache Spark, and experience with data pipeline orchestration tools.

The Delivery Ops Manager owns a unified Operations Engine across Sales, Delivery, Finance, Legal, Talent, and Growth/Marketing. Responsibilities include building and running the PMO, managing scheduling and bench capacity, driving forecast accuracy, and designing and enforcing SOPs.

Staff Full Stack Engineer with expertise in React, .NET, and Azure to design, develop, and maintain scalable web applications. Experience with RESTful APIs, GraphQL, Azure cloud services, and CI/CD pipelines required.

Design, build, and support secure, scalable cloud infrastructure solutions focused on Microsoft Azure. Automate provisioning and maintenance using Terraform. Manage HashiCorp Vault for secrets management and integrate it into delivery processes.

Business Analyst to support Finance and Product Control initiatives for a leading financial institution. Analyze, document, and test changes, collaborating with Finance, Product Control, and IT teams. Requires experience in Global Banking and Markets, project delivery, and strong analytical and communication skills.

Lead the design and implementation of Guidewire insurance solutions using Java/Gosu. Manage project teams, ensure timely completion, and advise clients. Requires 4+ years of software development experience, 1+ year in a leadership role, and fluency in English.

Lead IT solutions design, implement Guidewire core insurance system using Java/Gosu, and manage project teams. Requires 4+ years Java/Gosu development experience, 1+ year in a leadership role, fluency in English, and experience with systems integration or insurance.

Data Engineer will develop and maintain ETL pipelines using PySpark, SparkSQL, and Python within a cloud-based (AWS) lakehouse data platform. Collaborate with data analysts, ML engineers, and other data professionals to deliver reliable datasets. Requires a Bachelor's degree, 1-3 years of experience in data engineering, strong Python and Spark skills, and experience with at least one major cloud platform.

AI Engineer with 3+ years of Python experience sought to develop scalable AI systems, including LLMs and GenAI. Responsibilities include transforming prototypes into production-ready solutions, building backend components, and ensuring code quality. Experience with Docker, Git, and cloud environments (AWS, GCP, Azure) is required. Optional experience with frontend frameworks and Data Science is a plus.

IT Product Owner to drive implementation and evolution of Dynamics 365 for POS and SCM. Configure, manage, and design new features within the system. Collaborate with business and technical teams to ensure smooth rollouts.

Junior Digital Merchandiser supports eCommerce projects, including brand store creation and management. Responsibilities include managing updates, launches, and promotions, presenting results to clients, and collaborating with a team.

Lead Backend Developer (Go/Kotlin) will design and develop scalable microservices, own infrastructure provisioning with Terraform, and migrate legacy systems to GCP. Requires 5+ years of backend development experience, proficiency in Go or Kotlin, and GCP expertise.