1516 backend developer English-speaking jobs in Masovian Voivodeship

Senior .NET Developer responsible for developing functionalities, contributing to technical decisions, and working within a Scrum team to deliver sprint goals. Requires 6+ years of C# experience, ASP.NET Core proficiency, and cloud provider knowledge (AWS preferred).

We are seeking a ServiceNow Senior Developer with CSM, SecOps, CMDB, or HRSD experience to play a key ... Validating technical solutions before deployment Your skills Minimum 5 years of experience as a ServiceNow Developer

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Weare looking for anexperienced Elixir developer tojoin our team!

We’re currently seeking a passionate freelance Senior Android Developer to join our forthcoming projects

We’re currently seeking a passionate freelance Senior iOS Developer to join our forthcoming projects.

We’re currently seeking a passionate freelance Senior Flutter Developer to join our forthcoming projects

Assist in creating and configuring basic integration flows using Oracle Integration Cloud (OIC). Set up connections to SaaS, FTP, REST/SOAP endpoints. Support creation of mapping logic using XSLT and OIC visual mappers. Conduct unit testing and assist in error analysis. Maintain interface lists, payload samples, and error logs.

Node.js Developer needed for a growing IT company. Expert knowledge of database design, message brokers, and application architecture required. Experience with Docker, monitoring tools, and distributed systems is essential. Strong communication skills and a desire to mentor are also needed.

Senior .NET (WPF) Engineer to develop and maintain native Windows desktop applications. Responsibilities include designing secure offline-first solutions, implementing encryption best practices, and integrating authentication systems. Requires 5+ years of experience with C#/.NET, WPF, and the MVVM architectural pattern. Strong knowledge of security concepts, multithreading, and database technologies is essential.

We’re looking for anexperienced Rust developer tojoin our team.

Weare seeking anexperienced IOS Developer with astrong background innative development using Swift.

or Senior Software Developer (Java). ... or Senior Software Developer) will be determined based on experience, technical depth, and scope of ... and turns it into actionable insightsJoin our Financial Crime Product Development team as a Software Developer ... engineers who value clean design, thoughtful problem-solving, and technical excellence.The level (Software Developer

Senior Frontend Developer – Endava Technology is our how, and people are our why. ... As a Senior Frontend Developer, you will participate in designing, building, and documenting enterprise

Responsibilities Join our Fixed Income division as a Python Developer (for Market Finance), handling

Senior Elixir Developer to analyze, refactor, and improve a client's existing Elixir codebase. Requires 4+ years of experience with Elixir, Phoenix, OTP, and API development. Must have strong functional programming skills and experience with Git and testing methodologies.

Analytics Application Developer – Full Stack Software Engineer Oliver Wyman, part of Marsh McLennan,

We are looking for an experienced PL/SQL Developer to support and enhance core life insurance systems

Senior Go developer with 5+ years of IT experience and 3+ years in Go engineering sought to collaborate on a public cloud solution focused on security, privacy, and compliance.

Your responsibilities Backend implementation with Java Spring Boot, PostgreSQL, gRPC, Kafka, event‑driven ... and mitigation of an operational incident by investigating observability and application logs Support backend