130 English-speaking jobs in Białystok

Senior Data Engineer will design, build, and scale cloud data platforms for clients. Responsibilities include designing data pipelines, leading technical design of cloud data architectures, and collaborating with stakeholders. Requires 4+ years of experience as a Data Engineer, 2+ years with cloud platforms (Azure preferred), strong Python and SQL skills, and expertise in DWH data modeling and ETL/ELT architectures.

Senior Frontend Developer (React) needed for a software house. Design, implement, and maintain high-quality frontend applications using React. Collaborate with cross-functional teams and contribute to frontend architecture decisions. 5+ years of experience as a Frontend Developer with strong React expertise required.

Senior Node.js Developer sought for contract work. Design, implement, and maintain high-quality Node.js applications. Collaborate with teams, review code, and participate in technical discussions. Requires 5+ years of experience with Node.js, frameworks like Express.js or NestJS, and experience with RESTful APIs, databases, and cloud environments.

Senior Java Developer sought for contract work. Design, implement, and maintain Java applications. Collaborate with teams, review code, and participate in technical discussions. Requires 5+ years of experience with Java, Spring Boot, Hibernate, RESTful APIs, and cloud environments. Strong problem-solving and communication skills are essential.

Senior .NET Developer sought for contract work. Design, implement, and maintain .NET applications. Collaborate with teams, review code, and participate in technical discussions. Requires 5+ years of experience with C#/.NET, .NET Core, ASP.NET Core, and related frameworks. Strong understanding of object-oriented programming, design patterns, and clean code principles. Experience with RESTful APIs, SQL and NoSQL databases, cloud environments, CI/CD pipelines, and version control systems. Fluent English and experience in Agile/Scrum teams. AI experience a plus.

Senior Frontend Developer (Angular) needed for a software house. Design, implement, and maintain high-quality frontend applications using Angular. Collaborate with cross-functional teams and contribute to frontend architecture decisions. 5+ years of experience as a Frontend Developer with strong Angular (2) expertise required.

Lead Python Backend Engineer needed for a fully remote team. Requires at least 5 years of programming experience, including Python, and at least 2 years of team management experience. Responsibilities include leading and guiding a team, project management, client communication, and strategic thinking. Must be able to solve complex technical challenges and contribute to the company's long-term technical vision.

Reef Technologies seeks a Senior Python Backend Engineer with at least 5 years of programming experience, including Python. The ideal candidate will have a strong understanding of Python and be passionate about solving complex problems. The role involves contributing to a trustless supercluster of performance-proofed GPU-enabled sandboxed docker container runners controlled by decentralized algorithms.

Data Engineer Architect to design, build, and maintain a scalable enterprise data platform using Databricks. Requires 8+ years of data engineering experience, 4+ years with Databricks, and expertise in Python, SQL, and cloud platforms (Azure, AWS, or GCP).

Develop and maintain frontend applications using Angular and Capacitor for a modern enterprise digital platform. Integrate with REST APIs, backend services, and cloud environments (Microsoft Azure).

Experienced Aladdin Specialist needed for a UK-based financial sector project. Strong hands-on experience with Aladdin APIs, Aladdin Data Cloud, and Aladdin front-end tools required. Support data access, platform integration, and business usage of Aladdin across investment and operational processes.

Senior .NET developer to build, maintain, and support a web-based self-service portal for the financial services industry. Requires experience with ASP.NET Core, REST APIs, Azure services (Application Insights, Log Analytics, Key Vault, API Management, RBAC, Managed Identity), and Azure DevOps.

Senior Data Engineer to process simulation data for Autonomous Vehicle development. Analyze real-world sensor data, design SQL, Python, and Spark/PySpark queries, and prepare data for AV simulation environments and ML pipelines.

Senior Data Engineer to design and implement scalable data architectures using Google Cloud Platform (GCP). Experience with BigQuery, Dataflow, Pub/Sub, BI/ETL, and big data technologies required.

Lead AI Consultant will drive client discovery, pre-sales, and project shaping, translating business objectives into AI strategies and ensuring measurable impact.

Senior .NET developer to design, build, and maintain secure, scalable backend solutions within an Azure cloud environment. Experience with REST APIs, OpenAPI, EF Core, SQL Server, and Azure services is required.

Senior Fullstack Developer to design, build, and integrate scalable applications and data services. Experience with Python API development, SQL, Apache Kafka, and Azure Cloud Platform required. Strong problem-solving skills and experience working in a fast-paced environment. Previous hands-on experience with Aladdin APIs and data structures preferred.

Senior Data Engineer (Freelance) sought for project-based initiatives focused on industrial data and AI-driven analytics within the chemical and process industry. Experience with industrial data sources (MES, SCADA, Historians, PLC/OT) and data quality assessment is required. Strong Python and SQL skills are essential for building ingestion pipelines and transformations.

Senior Penetration Tester to conduct advanced security assessments of applications, systems, and infrastructure. Responsibilities include identifying vulnerabilities, developing attack scenarios, and collaborating with technical and business teams. Requires 5+ years of experience in penetration testing with expertise in web, mobile, and infrastructure security.

Senior Backend Engineer (Java / Architecture) needed for a long-term freelance project. Refactor and modernize legacy backend systems, improve microservices, and maintain REST and SOAP interfaces. Must have strong Java (Spring / Spring Boot) and architectural skills, experience with Kubernetes, and excellent communication skills.