Top Software Engineer Jobs in Poland

Design, develop, test, and maintain Java backend services for a large-scale data pipeline management platform. Build REST APIs and microservices supporting orchestration, scheduling, execution, and state management. Participate in technical design, code reviews, automated testing, CI/CD, production troubleshooting, and reliability improvements. Collaborate with engineering, product, and platform teams while developing expertise in distributed systems, cloud technologies, Kubernetes, and data processing platforms.

Own quarterly engineering goals for the Recoveries team, delivering scalable backend systems that maximize charged-off loan recovery and reconcile partner discrepancies. Lead engineers through ambiguous problems, collaborate with product, design, analytics, and risk stakeholders, and ensure operational reliability through metrics, monitoring, on-call support, and failure handling. Establish quality standards, guide technical design and implementation, contribute to large codebases, and mentor engineers through feedback and technical leadership.

As a Senior Software Engineer, you will integrate DPU hardware, execute validation plans, handle automation scripts, and collaborate with teams on networking features and testing.

Build, deploy, and maintain reliable backend systems supporting social network integrations at scale. Responsibilities include writing tested code, collaborating with product and engineering teams, reviewing code and designs, monitoring production services, troubleshooting outages, improving performance, and managing technical debt. The role also involves working with APIs, databases, messaging queues, Agile processes, architecture discussions, and cross-functional feature delivery.

Develop and optimize software framework support enabling Triton, PyTorch, and other machine learning frameworks to run on Graphcore hardware. Responsibilities include implementing features, compiler development, performance optimization, code reviews, technical documentation, upstream open-source collaboration, and coordinating complex technical work across teams.

The Software Engineer will develop the Collectives Communication Library for AI hardware, collaborating with teams, implementing features, and resolving technical issues.

Design, build, and maintain cloud-native microservices and web admin tools across the full stack (.NET backend and Angular/React frontend). Own end-to-end delivery including design, testing, CI/CD, containerization, monitoring, and production troubleshooting. Contribute to architecture, mentor engineers, and ensure high performance, scalability, and security for high-load services running in AWS.

Build, deploy, and maintain scalable, secure SaaS features for BlackLine’s AI-powered Invoice-to-Cash platform. The role involves using AI-assisted development tools, contributing to technical design, writing tested code, collaborating with product and engineering teams, and ensuring enterprise-grade performance, reliability, security, and observability. Engineers will work with modern software practices, cloud-native technologies, CI/CD, infrastructure-as-code, and microservices while learning from senior engineers and architects.

Design, build, and operate low-latency, strongly consistent distributed database systems. Implement replication, consensus, caching, and performance improvements. Run and maintain production services including on-call rotation, collaborate on roadmaps and system designs, and write performance-critical code in systems languages.

Build and maintain backend Collections platform to manage delinquent loans, develop recovery strategies, ensure high availability and reliability, implement monitoring and metrics, support operations and on-call, collaborate with product, risk, design and analytics, write well-tested extensible code, perform code reviews and debugging, and participate in team growth activities.

Design and implement features, optimize software performance, manage code quality, conduct code reviews, and mentor team members in developing machine learning frameworks like Triton.

The Infrastructure Software Engineer will build and optimize systems managing vast data, collaborate with teams for reliability, and handle operational issues.

Join the Collections backend team to design, build, and maintain scalable, highly available systems that manage delinquent loans and recovery strategies. Collaborate with product, risk, and engineering teams to implement reliable, well-tested backend solutions, debug large codebases, and contribute to team growth and operational excellence.

The Senior Infrastructure Software Engineer will build scalable systems, manage large data, and innovate solutions for performance and reliability, impacting millions of users.

Lead SAP-focused engineering to design, develop, and integrate ABAP-based solutions between SAP (S/4HANA/ECC) and BlackLine Cloud. Provide technical architecture, troubleshooting, performance tuning, documentation, testing, release support, mentoring, and act as Scrum Master while ensuring high code quality and aligning product and stakeholder requirements.

Lead SAP ABAP development and integration of BlackLine applications with SAP Cloud. Design, develop, test, tune, and maintain scalable ABAP solutions (S/4HANA, ECC). Serve as technical lead, mentor junior developers, perform releases and off-hours support, collaborate with product and engineering teams, and document technical specifications and test plans.

Founding Staff Engineer to design and implement scalable, secure SaaS architecture, champion AI-accelerated development, deliver high-impact features, collaborate on product roadmaps, and mentor engineering team members to establish best practices.

Develop and maintain internal tooling and processes for building, testing, integrating, and releasing the ML software stack. Collaborate with developers, QA, and architects to ensure reproducible, secure builds, resolve integration issues, and contribute fixes to the ML stack.

Design and develop scalable, high-quality backend systems for traffic automated road closure detection, handling the full software development lifecycle.

As a Software Engineer in Infrastructure Reliability, you'll build distributed systems that enhance platform reliability, implement traffic control mechanisms, and develop monitoring tools, working closely with diverse teams.

Develop and maintain performant web applications using Angular and TypeScript. Provide technical leadership, mentor engineers, conduct code reviews, improve code quality and scalability, and collaborate with backend, design, product, QA, and other engineering teams. Own frontend delivery for roadmap projects, contribute to technical planning and Agile processes, and drive initiatives such as technical debt reduction, performance improvements, and system enhancements.

Build production-grade Go services and Kubernetes components (CRDs/operators) to expose accelerator hardware for scalable AI compute. Ensure reliability, performance, and observability; collaborate with hardware, cloud, and ML teams; lead technical initiatives and mentor engineers.

Build and maintain performant React web applications using TypeScript and JavaScript. Provide technical leadership and mentorship, collaborate with backend engineers, designers, and product managers, conduct code reviews, and improve code quality, scalability, and maintainability. Own frontend feature delivery, contribute to technical planning, guide implementation and testing, and identify technical initiatives such as performance improvements, dependency updates, and technical debt reduction.

Lead design and delivery of scalable, secure SaaS features for an AI-powered Invoice-to-Cash platform. Own features end-to-end, use AI-accelerated tools, drive technical design, mentor engineers, ensure observability, CI/CD, testing, and enterprise-grade performance and reliability.

Develop systems for monitoring and predicting flight trajectories in aviation and defense. Create and deploy features tackling real-world optimization problems using a modern tech stack.