Top Software Engineer Jobs in Warsaw

Architect and implement backend services for high-scale cloud infrastructure. Build APIs, distributed and event-driven systems, asynchronous workflows, and scalable platform capabilities. Deploy and support services across cloud environments using CI/CD and Infrastructure as Code. Apply observability through logs, metrics, and traces, troubleshoot production issues, participate in technical design and code reviews, and use AI-assisted engineering tools while maintaining service ownership.

Staff Software Engineer responsible for leading architectural evolution across a distributed rendering platform, contributing to core backend systems, and improving performance, reliability, scalability, testing, and delivery practices. The role includes mentoring engineers through pairing and design reviews, unblocking teams, shaping technical strategy, improving CI/CD and tooling, and aligning engineering investments with product and business goals.

Build and maintain integrations for North's agentic platform, own the end-to-end integration pipeline, create evals and tests to ensure reliability, tune tool descriptions, and help other engineers add and maintain integrations while using AI responsibly to improve performance and quality.

Senior Software Engineer to design and implement C++/Python software, accelerate workloads with CUDA, develop and maintain Linux kernel modules and system services, optimize system and GPU performance, manage Linux systems, mentor junior engineers, and integrate AI technologies across products.

Lead backend engineer for EU cards: set technical strategy, design low-latency transaction and post-transaction ledgering/reconciliation systems, ensure operational availability (monitoring, on-call, playbooks), collaborate cross-functionally, define code/design standards, and mentor and grow engineering talent.

Lead a backend engineering team to deliver quarterly goals, design and build low-latency transaction and post-transaction systems, collaborate with product and design, ensure operational availability and on-call readiness, improve code and design standards, and mentor engineers.

The Software Engineer will design, develop, and support the MEMX Trading system software, focusing on production support during US evening hours.

Design, build, and lead development of AppGlass features; develop AI-first tooling and automation; implement enterprise integrations and deployments across Kubernetes and cloud; and improve reliability, testing, performance, and security for production use.

Join a scrum team to design, develop, test, and support enterprise Financial Instruments Life Cycle products. Write C# code, learn and work with APL, implement E2E/API/unit tests, collaborate with product and technical leads, support legacy systems, improve automation/tools, and work full-stack (SOA).

Design, build, and optimize GPU-accelerated deep learning inference software and frameworks (e.g., SGLang, vLLM). Profile and tune LLM and Generative AI model serving across NVIDIA accelerators, contribute code to inference libraries, and collaborate across teams to deploy high-performance multi-GPU solutions.

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.

Design, build, ship, and own high-scale, user-facing product features across frontend, backend, and data systems. Define problems, scope and prioritize work, collaborate with Product, monitor production usage, debug incidents, improve reliability, review code, and mentor engineers. The role requires strong backend expertise alongside React proficiency and ownership from product discovery through long-term maintenance.

Build and ship production AI agents that help mobile app developers manage subscriptions and paywalls. Own agent orchestration, tool execution, context management, evaluation, observability, permissions, and human-in-the-loop controls. Develop reliable, secure, user-facing backend systems, scope projects independently, monitor adoption, improve features after launch, participate in architecture and incident response, and mentor engineers.

Lead backend development for CRM segmentation and operations on the ABC Glofox platform. Design Golang services, optimize complex MySQL queries, manage large datasets, and guide technical direction for a team of 2–3 engineers. Collaborate with Product, Design, Development, and Testing teams to build XLerate, using Agile, Lean, DevOps, and CI/CD practices.

Provides principal-level technical direction across CRM engineering teams and shared platform capabilities. Responsibilities include architecting large-scale distributed and data-intensive systems, improving reliability, observability, performance, and operability, mentoring engineers, resolving critical cross-team incidents, leading migrations and integrations, designing webhook architectures, and establishing responsible AI engineering practices. The role also drives engineering standards, CI/CD, production readiness, and platform improvements across the CRM domain.

Design, build, deploy, monitor, and support scalable backend services, frontend applications, APIs, and integrations for a distributed Edge Experience platform. Work across the full software lifecycle, including infrastructure, testing, CI/CD, observability, and production operations. Drive technical decisions, improve reliability and engineering practices, collaborate with cross-functional teams, and mentor engineers through code reviews and knowledge sharing.

Develop and maintain Layer1 control software for physical network connectivity, instrument telemetry, and interface with hardware teams. Design, implement, test, and debug features in C/C++ and Python; collaborate with customers, hardware, and support teams; own projects from definition to deployment.

The Software Engineer will develop backend systems using Rust, manage multimodal data, and improve data infrastructure with a focus on performance and design ownership.

Canonical seeks open-source enthusiasts to optimize Ubuntu for new silicon technologies, collaborating with teams and customers to enhance software quality and performance across various platforms.

Design and develop services for automating work with a large server fleet while engaging in DevOps processes.

Design and develop services for monitoring servers, improve metrics pipelines, automate maintenance workflows, and investigate incidents to ensure infrastructure reliability.

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.

Develop and enhance MetaMask social and multi-chain experiences across Portfolio, browser extension, and mobile platforms. Collaborate across teams on complex projects, mentor engineers, and build scalable full-stack applications using React, React Native, modern JavaScript, blockchain technologies, APIs, testing, and continuous integration. Ensure cross-platform compatibility and apply web security best practices.

The AI Data Engineer will build and enhance data pipelines for AI initiatives, ensuring compliance, governance, and collaboration with cross-functional teams.