Top Software Engineer Jobs in Poland

Build and maintain scalable Python backend services and REST APIs, contribute to React/TypeScript frontends, work with data pipelines and relational databases, support deployment/monitoring, debug full-stack customer issues, partner with product and customer success, expand test coverage and ship weekly releases.

As a Software Engineer Intern, you will support the HFS team with transformation initiatives, focus on product upgrades, platform modernization, and utilize a variety of technologies while participating in Scrum ceremonies and technical documentation.

As a Fullstack Software Engineer, you will maintain and improve CaptivateIQ's core platform, design features, and ensure high engineering standards.

The Associate Software Systems Engineer will develop and maintain software for avionics systems, contributing to architecture, design, and project management, while ensuring compliance with industry standards.

As a Senior Software Engineer, you will integrate DPU hardware, execute validation plans, handle automation scripts, and collaborate with teams on networking features and testing.

The Senior Software Engineer will design and implement scalable data streaming solutions, develop DevOps tools, and improve system usability and observability.

The Software Development Engineer in Test II will design automated test frameworks for AI inference systems, focusing on validation, performance, and collaborating with engineers to improve quality. Requires 2+ years of relevant experience and proficiency in Python and automation frameworks.

The Staff Software Engineer will design and develop the Collectives Communication Library for AI hardware, lead development efforts, mentor junior engineers, and ensure integration with existing systems.

Design, build, and optimize agentic AI systems, including MCP integrations, multi-agent orchestration, and AI SDLC pipelines. Evaluate models and toolkits, run POCs and benchmarks, and advise product teams and clients on AI adoption and architecture trade-offs.

Develop and maintain software for wearable devices, collaborating with cross-functional teams. Ensure user data protection and privacy compliance when handling applicant or device data.

Build ML prototypes and data pipelines, collaborate with researchers and product engineering to integrate models into Fusion, containerize and deploy applications, implement best practices, and document architectures to accelerate research-to-production workflows.

Seeking a mid/senior software engineer to develop software for public health and food security projects in Sub-Saharan Africa, with a focus on collaboration, design sessions, and flexible working.

Develop and optimize Soroban smart contracts and integrate anchor services on the Stellar network for cross-border payment solutions. Collaborate with cross-functional teams, test and debug smart contracts, document development processes, provide technical support, and stay current with blockchain and payments technology trends to ensure secure and efficient implementations.

Implement and optimize EVM-compatible features, reduce gas usage, develop and test smart contracts, collaborate on Ethereum infrastructure, and provide technical support.

Build and maintain high-security mobile wallet apps using React Native, Swift, or Kotlin. Implement biometric authentication and secure key storage, collaborate with cross-functional teams, debug performance issues, and propose UX and security improvements.

Develop and maintain production-grade backend services for financial markets, exposing REST APIs. Improve architecture, scalability, performance, and resilience. Collaborate with traders, quants, and business experts. Implement CI/CD and automated testing, troubleshoot production issues, and promote high-quality engineering practices.

The Software Engineer will design and implement scalable backend systems, focusing on performance and collaborating on optimizations. Responsibilities include development using AWS and serverless architecture, maintaining software quality, and performance tuning.

The Software Engineer will integrate corporate systems with external SaaS, develop web applications, design APIs, automate processes, and mentor team members while ensuring performance and reliability of corporate platforms.

Front-end engineer responsible for building and maintaining complex Angular (2+) applications, using reactive patterns (RxJS/observables), writing unit tests, optimizing web performance, producing documentation, and collaborating with design, security, operations, and product teams.

Dragonfly is seeking Software Engineers for various portfolio companies, focusing on crypto technologies. Engineers of all experience levels are needed across multiple stacks.

Seeking software engineers with at least 2 years of production backend experience, interested in crypto and blockchain technologies, for roles with portfolio companies.

Build and operate production custody systems: signing service, key management, chain integrations, and transaction pipelines. Own end-to-end subsystems, integrate new chains, collaborate with cryptography on threshold signing and key recovery, write post-mortems, and produce clear async design docs and PRs.

As a Senior Software Engineer, you will develop CUDA Core Libraries in C++ and Python, optimizing GPU algorithms and improving developer experience across stacks through collaboration and independent project management.

Work on Percona's open-source MongoDB operational tools (primarily ClusterSync and also Backup). Build and harden a Go-based replication engine handling initial cloning and continuous change streams, ensure correctness and fault tolerance at scale, support sharded clusters, optimize performance and resource usage, and maintain CLI/HTTP APIs, metrics, logging, tests, and packaging. Collaborate openly via GitHub pull requests and JIRA.

Lead design and build complex Android features for Alarm.com's flagship app, focusing on real-time video streaming, IoT device control, and scalable architecture. Own projects end-to-end, mentor engineers, drive technical decisions, and implement performant UIs and native integrations (NDK/JNI) while collaborating with cross-functional teams.