Top Software Engineer Jobs in Poland

Lead Elasticsearch search relevance and vector search initiatives, designing and implementing new search features, algorithms, and data structures in modern Java. Improve performance, scalability, and usability; resolve complex bugs; contribute to Lucene; collaborate with globally distributed engineers and open-source contributors; and guide projects from technical design through delivery.

Join a cross-functional product team as a Senior Backend Engineer to design and implement resilient, secure .NET microservices. Responsibilities include building and maintaining APIs, diagnosing performance issues, writing comprehensive tests, addressing security vulnerabilities, interpreting code metrics to improve maintainability, and collaborating directly with clients while staying current with technical trends.

Lead Elasticsearch search relevance initiatives, designing and implementing scalable search features, algorithms, and data structures. Improve vector search capabilities, speed, and relevance; resolve complex bugs; contribute to Lucene; collaborate with distributed engineering teams and open-source communities; and provide technical direction. Develop idiomatic modern Java and autonomously guide projects from design through delivery.

Develop complex cloud applications for the Altium 365 platform. Build cloud-native applications, scalable infrastructure, microservices, APIs, and distributed high-load systems using .NET, AWS, databases, and multi-tenant architecture. Collaborate with the R&D team, address challenges spanning engineering software and cloud services, and share technical expertise. The role is hybrid, requiring three office days weekly in Katowice or Wroclaw.

Design, develop, verify, and support software across Altium products. Responsibilities include creating low- and high-level code, developing computational geometry and other algorithms, optimizing performance and memory usage, building modular cross-platform solutions, and maintaining existing source code.

Design, develop, verify, and support software across Altium products. Responsibilities include creating low- and high-level code, developing algorithms, optimizing performance and memory usage, building modular cross-platform solutions, and maintaining existing source code.

Develop complex cloud applications for Altium 365 using Java, .NET Core, AWS, microservices, multi-tenant architecture, and distributed high-load systems. Build scalable cloud-native services, APIs, data-processing systems, and database-backed applications while collaborating with R&D teams, solving technical challenges, sharing expertise, and owning features through completion.

Lead technical direction and hands-on execution for major software products and systems. Design scalable backend, frontend, API, database, and infrastructure solutions; write and review code; make architecture trade-offs; solve production issues; improve testing, security, observability, and development practices; and mentor engineers across teams.

Own technical direction and hands-on execution for major products and systems. Design scalable, reliable architectures across backend, frontend, APIs, databases, and infrastructure; write code; lead architecture decisions; solve complex production issues; improve engineering quality; and mentor engineers across teams. The role requires strong system design, coding, technical leadership, and communication skills in a globally distributed remote environment.

Own technical direction and execution for major products and systems. Design scalable, reliable architectures across backend, frontend, APIs, databases, and infrastructure while remaining hands-on with coding, prototyping, reviews, debugging, and production support. Lead architecture decisions, resolve complex technical problems, improve engineering quality, drive critical initiatives from design through production, and mentor engineers across teams.

Build and own full-stack systems for Treasury: design and implement responsive SPAs and backend services using modern .NET. Lead projects across the SDLC, modernize legacy margin/financing platforms, integrate analytics and UI components, troubleshoot production issues, improve observability, and mentor teammates while collaborating with treasury and quant stakeholders.

Build and operate production systems for Coder’s agentic development experience. Develop Go-based backend systems, contribute to React and TypeScript applications, improve agent execution and context management, and create reliable integrations across models, tools, workspaces, and developer infrastructure. Own projects through rollout, enhance system reliability and performance, participate in technical reviews, and collaborate with Product and Design to deliver useful AI-powered developer experiences.

Design and evolve core cloud platform services, control-plane components, internal APIs, and platform abstractions. Build production-grade Go services and tooling, drive architectural initiatives such as gRPC migration and eventing foundations, and improve scalability, reliability, and developer productivity. Collaborate across engineering teams, support production systems and incident response, and drive long-term technical solutions for managed cloud and enterprise deployments.

Design and scale backend systems, APIs, and services for Nango’s open-source developer infrastructure platform. Build APIs, SDKs, UIs, and runtime systems, optimize performance and reliability, solve integration challenges with customers, shape the roadmap, and maintain the open-source repository. The role requires strong ownership, product thinking, developer empathy, communication, and autonomy in a remote-first startup environment.

Design and develop backend services, APIs, CRM integrations, enrichment workflows, and synchronization services. Own software through production, improve reliability and performance, write automated tests, participate in reviews and architecture discussions, and collaborate with Product, Customer Success, Data Engineering, and Platform teams. The role involves AWS, microservices, Kafka, databases, CI/CD, and production support.

Staff Software Engineer responsible for architecture and technical ownership of Cognism’s distributed DaaS, API, MCP, and enterprise integration platforms. The role includes setting engineering standards, driving scalable and reliable backend architecture, mentoring senior engineers, advising leaders, and influencing technical decisions across multiple teams. The engineer will help establish Cognism’s Warsaw Engineering Hub and deliver production capabilities that improve platform reliability, scalability, and development velocity.

Build and maintain cloud-native backend services supporting Data-as-a-Service, REST APIs, and Model Context Protocol capabilities. Design distributed microservices, deliver reliable production software, own features from technical design through operational support, write automated tests, contribute to architecture, collaborate across engineering and product teams, and mentor less experienced engineers.

Develop and maintain a business-critical industrial application that collects, distributes, and reports sensor data from cement plants worldwide. Responsibilities include troubleshooting and modernizing legacy systems, writing Python and TypeScript/JavaScript code, building user interfaces, modeling business processes, improving architecture and testing practices, and collaborating with product owners and multidisciplinary stakeholders. The role also involves applying AI-assisted development to improve productivity and solution quality.

Design, build, and maintain consumer-facing features across web (React) and mobile (React Native). Own product lifecycle from discovery through release, monitoring, experimentation, and iteration. Drive A/B testing and feature-flag strategies, make architectural decisions, ensure accessibility/performance/testability, mentor engineers, and collaborate with Product, Design, Data, and Platform teams.

Develop low-level software that interfaces with networking ASICs, FPGAs, and PCIe bridges. Implement latency analysis, event tracking, and performance optimizations. Integrate CPUs/BIOS with the OS and qualify supporting hardware components for product bring-up.

As an Integrations Engineer, you will connect ERP systems with the BLP Digital platform through interface design and implementation, working with various protocols and supporting client integration efforts.

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

Develop and debug embedded firmware for industrial controllers, network modules, and automation products. Implement network protocols, controller functions, and platform services; perform requirements analysis, system design, testing, root-cause analysis, and code reviews. Write unit and integration tests within CI/CD workflows, document designs, participate in Agile/SAFe activities, and collaborate with globally distributed engineering teams.

Develop complex cloud applications for the Altium 365 platform. Build cloud-native applications and scalable infrastructure, design APIs and data models, implement stateful and stateless services, work with databases and ORM frameworks, and contribute to microservices and cloud solutions. The role requires technical ownership, collaboration, problem-solving, and influence over engineering standards, best practices, and technical governance.