Top Software Engineer Jobs in Warsaw

Design and build scalable software solutions using C# and .NET, owning the full software development lifecycle through production and continuous improvement. Contribute to architecture and technical direction, collaborate with Product and QA, write unit and integration tests, communicate technical decisions clearly, and mentor other engineers. The role requires strong engineering judgment, quality standards, and experience working in agile, cross-functional teams.

Develop and maintain automated tests and testing infrastructure for Veeam products. Collaborate with development teams to design and implement test frameworks, analyze source code and test results, maintain defect databases, and support internal automated testing systems.

Own end-to-end delivery of major projects for strategic customers, designing architectures, building integrations, and solving complex technical challenges. Collaborate closely with customer engineers and executives to apply ElevenLabs technologies effectively. The role requires strong Python development, software architecture, API integration, communication, and problem-solving skills, with a customer-facing technical focus.

The role involves leading engineering teams in backend system design and delivery for financial platforms, ensuring quality and collaboration, and mentoring team members.

Design and scale mission-critical market data services for stocks, options, crypto, and foreign exchange. Responsibilities include architecting backend systems and APIs, maintaining software quality and test coverage, participating in code reviews, and troubleshooting incidents and bugs. The role uses Go and Python with REST, gRPC, WebSockets, SSE, Docker, Kubernetes, Google Cloud, BigTable, Prometheus, Grafana, and ELK.

Design, build, and operate low-latency treasury and financing systems using C#/.NET and React. Partner with traders and ops to translate requirements, implement DevOps and CI/CD, write automated tests, support production incidents, and mentor a distributed team while introducing scalable architecture and new technologies.

Build and maintain API integrations and the connectivity platform linking EV chargers, vehicles, and OEMs. Improve reliability, observability, and scalability; develop automations and internal tools for monitoring and triage; define SLAs and alerting; collaborate with product and engineering teams to balance stability and delivery.

Design and build durable, distributed data-streaming infrastructure that decouples process data from Camunda’s live execution engine. Develop customer-facing integrations such as Kafka connectivity, support analytics data consumption at scale, and make architecture decisions around consistency, durability, and storage. Participate in production support and on-call rotations while collaborating with Product, Data Layer, Distributed Systems, QA, SRE, and Support teams. Lead ambiguous, cross-functional engineering initiatives from design through delivery.

Build and maintain Camunda 8 backend data-layer services spanning relational databases and Elasticsearch/OpenSearch. Design scalable storage, query, retention, and streaming systems; improve performance, indexing, and production tooling. Lead engineering initiatives from solution design through delivery, collaborate across teams, provide L3 support, and participate in on-call rotations. Investigate production data issues and contribute to schema evolution, workflow automation, and CI improvements.

Design and implement robust Rust services and libraries for trading, payments, and crypto consumer experiences. Build scalable, low-latency distributed systems, write efficient testable code, ensure security and reliability, debug across the stack, collaborate with product teams, own systems end-to-end, and mentor other engineers.

Design, implement, and test cloud-based server-side software in Python. Optimize code performance, maintain unit and integration tests, and work with AWS, Docker, DevOps, and CI/CD tools. Preferred experience includes reverse engineering public APIs, PostgreSQL, Django ORM and DRF, network protocols, and web or mobile technologies.

Design, build, and operate access experience services and developer-facing APIs/SDKs for Netflix's access control platform. Own system design, partner integration, rollout, and maintenance while ensuring secure, scalable, high-availability access tooling across global teams.

Design, develop, and maintain high-availability distributed systems supporting Akamai’s global network. Responsibilities include full product lifecycle ownership, improving testing, deployment, monitoring, and maintenance capabilities, mentoring engineers, and evaluating emerging network operations and automation technologies. The role requires software development on Linux/Unix platforms using Python, Go, and/or shell scripting, plus familiarity with internet protocols and version control systems.

Lead development of payment and billing systems, including payment gateway integrations, experiments, reliability and security improvements, production support, and technical direction. Mentor and manage team members through 1:1s and development plans, collaborate with Product and Growth, and own features from scoping through delivery. The role requires strong PHP backend expertise, high-load architecture and testing experience, and familiarity with payment systems and modern DevOps tools.

Design, develop, and maintain secure, scalable full-stack web applications and authentication services. Work across frontend and backend using Python and JavaScript/TypeScript, manage databases, implement security best practices, support deployments and QA, and collaborate with multidisciplinary teams to improve platform functionality and security.

Designs, develops, and operates reliable APIs, marketplace integrations, and event-driven workflows for Cloudbeds' global partner ecosystem. Responsibilities include writing tested PHP and Java code, designing resilient distributed systems, improving API scalability and observability, supporting cloud-native infrastructure, researching technologies, and collaborating with technical stakeholders, customers, and partners.

Develop and maintain a trading risk platform using C++ on Linux. Collaborate on service-oriented architecture and optimize for performance with a focus on engineering excellence.

Develop software for risk data pipelines, collaborating with trading teams to manage trade data, improve capital efficiency, and automate operations.

Design and build large-scale distributed data systems for blockchain analytics. Translate ambiguous product requirements into technical designs, sequence work, make architectural decisions, and own components from design through production. Work across Go, Kotlin, Rust, and Python while optimizing data ingestion, distributed processing, and data lake storage. Mentor engineers, improve design reviews and testing practices, and collaborate effectively in a fully distributed team.

Lead backend engineer on the Repayment Scheduling team responsible for owning and delivering quarterly goals, designing and operating backend systems that automate and orchestrate payments at scale. Collaborate with product, design, and analytics; define technical plans; improve availability and observability; support on-call and operational efforts; set code and design standards; and mentor and develop engineering talent.

Build and own end-to-end features across backend and frontend: design backend services and data models (Python/Django), implement RESTful APIs, create reusable frontend components (TypeScript/React), write tests, participate in code reviews, maintain production reliability and security, and collaborate with product and design.

Build, maintain, and own scalable, reliable software systems; collaborate with product, design, and engineers; participate in architecture and code reviews; troubleshoot and optimize production systems; mentor junior engineers; apply emerging technologies (including AI) to improve product and developer productivity.

Maintain and troubleshoot a Java backend application while supporting database modernization from SQL Server to AWS Aurora. Develop and maintain AWS Infrastructure as Code using Pulumi and TypeScript, troubleshoot Kubernetes environments, resolve platform tickets, and create load-testing scripts. The role requires strong software engineering fundamentals, AWS and Kubernetes experience, IaC expertise, and a proactive problem-solving mindset.

As a Principal Big Data Engineer, you will design scalable solutions, develop data pipelines, create features, and collaborate with various teams to enhance Akamai's data platform.

Senior backend engineer for Affirm's Identity International team. Design, deliver, and operate identity/KYC and user lifecycle systems for international markets. Lead technical direction, translate goals into projects, improve code quality, availability, and scalability, mentor engineers, support on-call and operational health, and collaborate with product, design, and analytics to manage risks and tradeoffs.