31 English-speaking jobs in Białystok

Who we are At Billennium, we are a global technology company with over 20 years of experience, delivering innovative IT solutions for enterprise clients worldwide. We combine technology, business expertise, and strong partnerships to help organizations accelerate their digital transformation. Join a team that values collaboration, knowledge sharing, and continuous growth.

Synerise is not just another tech company. It is a space where our brilliant team consequently brings technology change to the business world and instead of following known paths, we are creating a new one – a next-generation, fully personalized and AI-driven customer experience. We successfully deliver an all-in-one tool - Synerise (YouTube link).

Appian Developer to build and maintain applications using the Appian low-code platform. Responsibilities include designing SAIL interfaces, workflows, and integrating with external systems via REST/SOAP APIs. Requires experience with Appian objects, SQL, and deployment.

Senior Data Engineer to contribute to a banking platform for a Japanese financial group. Responsibilities include designing ETL pipelines, building integrations (APIs, SQL, S3, SFTP), and ensuring data accuracy. Requires 5+ years ETL experience and Python skills.

Experienced Workday ERP Consultant needed for freelance/B2B contract. Design, build, and maintain HR solutions using Workday and other systems. Support technical/functional implementation, optimize processes, and manage stakeholder relationships.

Senior Data Engineer to design and scale cloud data platforms using Azure, Databricks, and Spark. Responsibilities include building production-grade pipelines, driving data architecture, and mentoring engineers. Requires 4+ years of experience.

Security Specialist - Penetration Tester role involves identifying and investigating security vulnerabilities. Responsibilities include contributing to testing methods, creating reports, and mentoring. Requires 3+ years in web/infrastructure penetration testing.

Senior Data Scientist role focusing on LLM Clinical NLP. Build and improve LLM/transformer pipelines to extract structured data from clinical notes. Requires hands-on NLP with BERT/RoBERTa and generative LLMs.

DevOps Cloud Infrastructure Engineer needed for B2B contract to connect Flix's cloud platform with a new train fleet. Responsibilities include building secure, reliable cloud infrastructure using Terraform/Terragrunt on AWS or other major platforms.

Experienced Workday ERP Consultant needed for freelance engagement. Design, build, and maintain HR solutions using Workday and other HR systems. Support technical and functional implementation, optimizing processes. Requires 3+ years in Workday implementation/consulting.

Experienced Workday Integration Engineer needed for B2B contract. Design, build, and maintain AWS integrations between Workday HRIS and internal/external systems using Python, Terraform, and AWS services.

Operate and support network security infrastructure in a data center environment. Handle incidents, changes, and service requests while providing 24/7 support. Requires 8+ years in network/security engineering with experience in Juniper, Fortinet, and F5.

Senior Data Engineer to design and scale cloud data platforms using Azure, Databricks, and Spark. Responsibilities include building production-grade pipelines, driving data architecture, and implementing DataOps practices. Requires 4+ years of Data Engineering experience.

Manage and contribute to process improvement initiatives focused on efficiency and operational effectiveness. Coordinate projects, identify inefficiencies, and recommend solutions using Lean and Six Sigma principles.

Lead a large Technical Accounting team, focusing on performance, collaboration, and stakeholder partnership. Responsibilities include supervising operations, managing workload, driving continuous improvement, and leading financial services projects.

Reinsurance Business Analyst maintains and enhances the DXC SICS application for reinsurance and insurance claims management. Responsibilities include configuration, issue resolution, and collaborating with users to ensure data integrity. Requires 4+ years in reinsurance operations and C1 English proficiency.

Lead IT projects for financial institutions, primarily insurance companies. Coordinate projects, define functional requirements, and mentor team members. Work with developers, architects, and clients.

Senior Fullstack Mobile Engineer KMP role building digital financial products. Develop shared logic via KMP, design backend services with Java/Spring Boot, and enhance customer-facing mobile features. Requires strong Kotlin/KMP and mobile architecture skills.

Senior MS Dynamics 365 CRM Architect to lead the technical and functional evolution of the Customer Engagement ecosystem. Responsibilities include designing end-to-end blueprints, architecting API integrations, and leveraging the full Power Platform suite. Requires 6+ years of D365 CE/CRM experience.

Experienced Assembler Programmer needed to support and modernize business-critical IBM Mainframe systems. Responsibilities include designing, writing, and optimizing HLASM code for z/OS, MVS, CICS, and DB2. Requires 7 years in Assembler development.