react English-speaking jobs in Jaworzno

Senior .NET Developer will design, build, and support integrations between a registry platform and third-party systems. Responsibilities include developing integrations for document generation, payment processing, and other customer-specific systems.

Software Engineering Manager will lead a team of 7-12 engineers, manage project goals, and contribute to product strategy. Requires 8 years of software development experience, 2 years managing teams, and experience architecting distributed systems. Experience with infrastructure systems, Linux, and virtualization is preferred.

Technical Lead to define architecture, design scalable APIs, and lead a team of engineers. Experience with Node.js, React, microservices, cloud platforms (Azure, GCP), and Agile methodologies required.

Tax Manager - REMOTE. Lead and coordinate external accounting firms in tax return preparation and year-end provisions. Oversee corporate tax and VAT/indirect tax reporting and compliance requirements. Support and review intercompany transfer pricing studies and monitor transactions.

The Head of Engineering leads engineering execution, team health, and delivery systems for a world-class freelancer management platform. This role focuses on building people, processes, and scalable ways of working, improving predictability and visibility of product delivery, and cross-functional collaboration.

Rebuild and own First Connect's comparative rater, integrating it into the new SaaS offering. You will design flows, own integrations, and work with engineering, design, business, and carrier teams to prioritize, build, and monitor the product suite.

Senior Python Developer will implement and maintain fintech projects, programming business logic, APIs, and data models. Responsibilities include conducting code reviews, participating in feature design, and working on operations and deployments.

Advise on, structure, and place Warranty and Indemnity and other transactional risk insurance solutions. Support clients throughout the deal lifecycle, from structuring to negotiations and final placement. Collaborate with law firms, financial investors, corporates, and global insurers.

As an Atlassian Consultant, you will provide expertise in implementing and customizing Atlassian products within a global company environment. You will analyze business requirements, develop solutions, and manage projects, ensuring efficient utilization of Atlassian tools.

As a Transfer Agency Investor On Boarding Representative, you will drive due diligence checks on shareholder accounts to achieve accuracy and client satisfaction. Responsibilities include updating investor accounts, establishing client contacts, and ensuring adherence to policies and procedures.

Fullstack developer to build core digital infrastructure for a leading German health-tech platform. Experience with TypeScript, Node.js, React, GCP, Firebase, SQL, and NoSQL required. Contribute to both backend and frontend development with a focus on backend logic and data modeling.

Java Technical Lead with 10+ years of experience in Java development, Spring Framework, and enterprise systems. Expertise in RESTful APIs, microservices, messaging systems (Kafka), Angular, and databases (Oracle, SQL, PL/SQL). Experience with Docker, Kubernetes, CI/CD tools, and Git. Fluent English required. Hybrid work model (twice a week in office).

Build, optimize, and maintain big-scale data warehouses for leading brands using Snowflake. Requires 5+ years of data warehousing experience, 5+ years with Snowflake, and 2+ years with Apache Kafka. Strong SQL and Python skills, data modeling experience (Medallion and Kimball), and ETL/ELT process development are essential.

Senior UI/UX Developer will design and deliver intuitive user experiences for enterprise-grade digital products. Responsibilities include UX research, interaction design, UI design, and collaboration with frontend developers and stakeholders. Requires 6-10 years of experience in UI/UX design, a strong portfolio, and proficiency in design tools like Figma or Sketch.

Senior Backend Engineer will design and implement scalable solutions for the Models platform, improving reliability and performance. Responsibilities include addressing technical debt, collaborating with cross-functional teams, and leading technical initiatives in Python.

Fullstack Developer will build backend services with Node.Js (NestJS/Express) and frontend apps with React/Next.Js + TypeScript. Requires strong backend skills in Node.Js/NestJS, at least 5 years of experience in backend applications, and solid frontend skills in React + TypeScript. Must have database and API integration knowledge and experience mentoring mid/junior developers.

Part-time Network Engineer needed in Cracow to maintain, assess, and improve IT networks. Responsibilities include network administration, troubleshooting, security, and design. Requires expertise in network administration, troubleshooting, security, and design. Collaboration and on-site work are essential. Certifications like CCNA or CCNP are beneficial.

Senior IT Recruiter needed for end-to-end recruitment of engineering and R&D talent. Requires 5+ years of IT recruitment experience, sourcing expertise, and proficiency in ATS (Zoho Recruit preferred). Fluency in Polish and English is essential.

Internship opportunity with Marsh's US Tax Operations Team in Warsaw. Gain hands-on experience in US tax operations within a global professional services firm. Successful interns may have the chance to extend their cooperation and grow into a US Tax Consultant role.

Video Content Moderator needed for the world's best-loved video-sharing website. Responsibilities include reviewing user reports, analyzing content, and making decisions based on compliance policies. Must have Bulgarian language proficiency (C1 level) and English (B2 level).