Top Software Engineer Jobs in Warsaw

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.

Lead backend engineering for Card Acquisition, define technical strategy, deliver quarterly goals, mentor engineers, collaborate with product/design/analytics, ensure operational excellence (monitoring, on-call, playbooks), improve code and design standards, and drive quality and availability for customer-facing systems.

Lead backend engineering and AI-agent integration efforts: design agent-ready systems, context pipelines, CI/CD and test guardrails, migrate monoliths to microservices, set API and schema standards, mentor engineers, and drive AI-assisted development practices.

Build and ship native Android features in Kotlin for an AI-enabled neobank. Collaborate with product and design to create clean user journeys, integrate backend APIs, improve performance and reliability, use analytics and production data to iterate, and implement on-device AI where it improves the UX.

As a Senior Software Engineer, you will build functionality for a solar design platform, design APIs, and enhance scalable services, while mentoring teammates and contributing to agile processes.

Build and ship intuitive frontend features for Aurora's Physical Design CAD and 3D canvas. Collaborate with product, design, and backend engineers to design, implement, test, and support production features. Improve frontend architecture, tooling, and reliability, participate in on-call rotation, and mentor peers.

The Senior Software Engineer will design and maintain backend functionality using APL and C#/.NET, contributing to code quality, performance, reliability, and stakeholder collaboration.

Join a scrum team to design, develop, test, and support enterprise post-trade financial products. Write C# code, learn and work with APL, create automated (E2E/API/UT) tests, collaborate with product and technical leads, support legacy systems, and improve automation and processes as a full‑stack developer (SOA).

Designs and executes manual and automated tests for cloud-based and desktop software products. Builds test automation, validates backend systems and data using SQL and NoSQL databases, and partners with developers, product teams, DevOps, and QA professionals. Maintains test documentation, identifies risks, supports software reliability, and contributes to continuous improvement of QA processes and tools.

Design and implement reliable, high-performance Rust services and libraries powering trading, payments, and crypto products. Build scalable distributed systems, network services, and asynchronous applications for revenue-critical, low-latency environments. Debug issues across the operating system, network, and application layers; collaborate with product teams; own systems end to end; and mentor engineers while contributing to technical culture.

Owns Redpanda Cloud’s usage-based billing and payment services end to end, including Metronome metering, Stripe credit-card management, invoicing, reconciliation, and auditability. The role involves designing, building, operating, and evolving distributed systems; partnering with finance, product, customer success, and engineering; maintaining secure customer-facing UIs; and participating in on-call support.

Design, build, and operate Redpanda’s Agentic Data Plane and cloud services across AWS, Azure, and GCP. Lead architecture and technical projects, develop scalable and reliable systems, automate infrastructure provisioning and self-healing, and ensure resilience, observability, security, and zero-downtime upgrades. Participate in on-call escalation, collaborate across engineering and customer-facing teams, and help achieve a 99.99% SLA.

Lead technical direction for Redpanda Cloud customer-facing systems covering authentication, account management, usage-based billing, payments, and cloud marketplaces. Own architecture for reliable, auditable billing and payment flows across AWS, GCP, and Azure. Drive technical roadmaps, stabilize inherited systems, mitigate risk, improve reliability and security, mentor engineers, and participate in on-call operations.

Architect, build, and operate Redpanda’s Agentic Data Plane and cloud services across AWS, GCP, and Azure. Lead large technical projects, define architecture, improve reliability and scalability, and develop automated infrastructure provisioning, deployment, observability, and self-healing systems. Participate in on-call escalation, support zero-downtime upgrades, and collaborate across engineering, product, and customer-facing teams while mentoring and raising technical standards.

The Lead Golang Software Engineer develops server solutions, leads technical designs and code reviews, mentors colleagues, and ensures the quality of engineering practices in the Commercial Systems unit.

The Python Software Engineer will develop and maintain test automation tools for hardware certification and improve Linux testing methods.

You will build and maintain container images, automate CI/CD processes, engage with the community, and mentor junior team members in a collaborative environment.

Drive process improvement, coach colleagues, and manage features in a distributed system for cloud automation and software operations.

Lead Python Software Engineer responsible for developing solutions, collaborating on designs, mentoring team members, and enhancing engineering practices.

Develop and enhance dqlite, a distributed SQLite database, including debugging, implementing features, and engaging with the open source community.

Lead the design, development, operation, and support of Splunk’s UEBA product. Build scalable Python and React applications, guide architecture, resolve customer issues, participate in on-call operations, integrate technologies, and mentor junior engineers. Collaborate with product, design, customers, and engineering teams while applying cloud, DevOps, data-storage, monitoring, and AI development practices.

Join Primer's Growth team to build self-serve merchant onboarding features. Ship React frontend dashboard work, deploy to production, monitor impact, collaborate with Design, and contribute to Python backend code when needed.

Build and own merchant-facing frontend projects end-to-end. Lead frontend architecture, produce RFCs/ADRs, create composable performant accessible UI, monitor production impact, respond to incidents, and mentor engineers while ensuring high code quality and measurable outcomes.

Lead development in an agile team for SimCorp Dimension’s Portfolio Analytics product. Responsibilities include refining client requirements, designing and implementing scalable backend services and APIs, testing solutions, supporting the product, and improving engineering practices, performance, maintainability, CI/CD, telemetry, and cloud readiness. The role also involves developing product expertise, collaborating internationally, experimenting with technologies, and applying AI to practical engineering tasks.