Top Software Engineer Jobs in Poland

As a Senior Software Engineer, you'll design and build scalable market data systems, improve API architecture, and enhance overall system performance, contributing to Alpaca's infrastructure for trading financial assets.

Build and maintain core post-trade clearing systems and securities-finance infrastructure. Own projects end-to-end, design reliable distributed services and RESTful APIs, integrate new clearing partners, participate in on-call rotation, and improve systems to enable new product offerings.

Lead decomposition of a PHP monolith into Go microservices, design and operate scalable distributed systems (Kafka, Temporal, OpenSearch, Memgraph), integrate network telemetry and third-party APIs, maintain Terraform-managed cloud infrastructure, enforce SLAs/SLOs and CI/CD quality, mentor engineers, participate in on-call rotations, and drive platform architecture and reliability.

Own the architecture and roadmap for a high-reliability, multi-channel alerting service. Design routing, escalation, Temporal workflows, per-tenant configuration, channel integrations, delivery guarantees, and long-running state. Drive cross-team alignment and mentor engineers to ensure reliable, composable notification delivery.

Lead QA for AI-enabled Fusion platform features: define risk-based test strategies, design/maintain automation (UI/API/performance), validate AI behavior, diagnose distributed system defects, mentor engineers, and influence design and acceptance criteria.

The Senior Principal Software Engineer will define technical architecture, lead engineering efforts, mentor teams, and enhance platform performance while building scalable cloud applications and systems.

Lead design and implementation of threat detection features for on-prem and hybrid identity environments. Build scalable backend services, integrate product capabilities across the ITDR portfolio, apply AI/ML for anomaly detection, and mentor engineers. Collaborate with product and platform teams to align architecture, security, and operational practices for enterprise deployments.

Design and implement scalable backend services for on-prem and SaaS identity recovery (Active Directory, Entra ID, Okta). Influence architecture, integrate with platform products, adopt cloud/containerization and AI capabilities, triage customer issues, and mentor engineers.

Lead design and implementation of identity-focused threat detection for hybrid environments. Build scalable on-prem backend services, integrate ITDR products, apply AI/ML for anomaly detection, collaborate with product and platform teams, mentor engineers, and drive architecture and security-first solutions.

Build and own end-to-end features across Sona’s platform using AI-assisted development. Direct and correct agent-produced code, work cross-functionally, engage customers in discovery and workshops, and contribute across scheduling, payroll, HR, and mobile domains.

Senior Software Engineer will build and own backend-focused fullstack features across AI Retrieval, Infrastructure, or Product teams. Responsibilities include improving search/retrieval quality and latency, building scalable backend systems, contributing to embeddings/ML-powered search, collaborating cross-functionally, and shipping production-ready code in a continuous deployment environment.

Design, develop, and maintain backend systems (currently in APL), drive technical design and architecture, mentor teammates, ensure code quality via unit/integration tests and CI/CD, diagnose performance issues, use Git workflows, and collaborate with product and cross-located teams to deliver Private Debt functionality.

Lead design and development of backend systems using C# and APL, architect cloud-native solutions, mentor engineers, and ensure system reliability with automated testing.

Design, build, test and maintain cloud-based full-stack shared components (Action Center) incorporating AI workflows. Collaborate with product, UX, and architects, own DevOps/CI-CD, improve cloud infrastructure, and iterate on technical architecture and developer experience.

Lead design, develop, and deliver production-grade .NET software and AI solutions (generative and Agentic AI). Mentor engineers, integrate AI features across modules, ensure CI/CD and DevOps best practices, perform code reviews, and drive architecture and quality improvements.

Manual-focused Software QA Engineer responsible for creating/executing test cases for mobile apps, BLE-connected hardware, and web portals; documenting bugs and test results; supporting FDA-compliant QMS and validation documentation; collaborating with product, dev, and support teams; and driving targeted automation to improve coverage.

Lead architecture and development of a mission-critical, distributed call-handling platform. Drive microservices design, CI/CD, automated testing, cloud deployments, observability, messaging, and mentor engineering teams while supporting 24/7 operations.

Lead design and implementation of cloud-native backend services using Microsoft .NET and Azure (Functions, App Services). Build event-driven architectures with Service Bus/Event Hub, own CI/CD in Azure DevOps, optimize SQL Server performance, ensure code quality via testing and reviews, troubleshoot complex backend issues, and contribute to architecture and team practices.

Develop and maintain complex cloud-native backend services for the Altium 365 platform. Build scalable microservices and stateful/stateless servers, design intent-based APIs, process large-scale data, apply AI/ML for advanced search, work with relational databases/ORMs, and drive engineering standards and technical direction while collaborating across teams.

Design and build cloud-native backend services for Altium 365, focusing on microservices, large-scale data processing, AI/ML-powered search, relational databases and ORM, while driving engineering standards, technical direction, and collaborating across teams.

Design, build, and operate scalable backend and platform services across cloud environments. Own service lifecycle from design through deployment, observability, troubleshooting, and production support. Drive decisions for data flow, asynchronous workflows, resiliency, and performance. Improve CI/CD, automation, testing, and engineering workflows while collaborating on architecture, ADRs/RFCs, and cross-team technical standards.

Lead design, development, and test-automation for enterprise investment operations products. Provide technical leadership, define test architecture, drive automation-first practices, improve CI/CD pipelines, mentor engineers, and collaborate with stakeholders to ensure high-quality delivery.

Senior full‑stack engineer responsible for designing, implementing and maintaining front‑end and back‑end features, owning feature delivery, driving test automation and CI/CD, contributing to architecture, mentoring teammates, and improving development processes within an enterprise fintech product.

Lead technical design, development, and test automation for enterprise investment-operations software. Drive automation-first practices, CI/CD improvements, test architecture, and mentoring. Collaborate with cross-functional stakeholders, perform root-cause analysis, and implement tooling and process enhancements to ensure high-quality delivery.

The Staff Software Development Engineer will design, develop, and support software solutions, focusing on algorithms, code optimization, and modular design while ensuring cross-platform compatibility.