Top Software Engineer Jobs in Warsaw

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.

Lead code security strategy and architecture for custom applications and hybrid environments. Perform secure design reviews, threat modeling, dependency and secrets risk assessments, cloud and network misconfiguration remediation, and guide engineering teams on secure-by-design practices and CI/CD/source-control controls. Provide cross-domain security leadership covering application, cloud, network, and AI risks.

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.

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.

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.

Design and build production-grade mission, behavior, and motion planning systems for autonomous ground support vehicles operating in airport environments. Responsibilities include selecting algorithms, defining planning-stack architecture, prototyping optimization and search-based approaches, collaborating with perception, controls, localization, and systems teams, promoting functional safety practices, and mentoring engineers.

Develop full-stack features for an Excel-based ERP reporting platform, with emphasis on business logic, technical design, bug fixing, testing, refactoring, and CI/CD maintenance. The role involves shaping user stories with stakeholders, occasional server access, and potential code reviews. Engineers work remotely with flexible hours while maintaining predictable availability and at least three hours of overlap with Montreal EST. TypeScript and C# are central technologies, with React, Docker, Nginx, and AWS experience valued.

Design and build scalable applications using Golang, contributing to component development, data storage, performance optimization, testing, deployment automation, and client solutions. Collaborate with technical leaders, clients, and distributed engineering teams to analyze requirements and deliver high-quality software. The role also involves code reviews, pull requests, version control, agile delivery, CI/CD, and maintaining technical quality standards.

Design and build scalable software systems for an equity management and financial reporting platform. Collaborate with engineers, product managers, and designers to develop robust automation, financial data transformations, compliance functionality, and user experiences. Depending on team placement, work may focus on equity transactions, reporting, AI systems, or tax capabilities. Responsibilities include architecture discussions, reliable data flows, code reviews, feature ownership, and mentoring engineers.

Designs and executes test plans for Power BI reports, dashboards, ELT pipelines and web-based data tools. Validates data integrity using SQL, verifies transformations and mappings, logs defects, performs regression/integration testing, and collaborates with engineers and analysts to improve reporting and data validation frameworks while ensuring governance and performance.

Design, implement, test, deploy, and operate import/export services for a cloud-native SaaS. Build React+TypeScript UIs, architect resilient distributed systems, own production reliability and on-call duties, improve CI/CD and observability, mentor engineers, and collaborate on product and design system development.

Design, build, and operate cloud-native Import/Export services for RelativityOne. Own production systems and on-call duties, drive observability and CI/CD automation, mentor engineers, and translate business needs into scalable distributed SaaS solutions meeting SLO/SLA targets.

Performs software and system safety analyses for autonomous vehicle platforms, including HARA, FMEA, FTA, STPA, freedom-from-interference, and code-level hazard evaluations. Derives and traces safety requirements, defines fail-safe mechanisms, reviews safety-critical C++ and Python code, supports safety-case development, and collaborates with robotics, hardware, systems, software, and test teams to verify compliance and enable airport deployment.

Build and enhance GraphAware Hume, a graph-powered analytics platform. Responsibilities include developing APIs, designing secure and scalable access-control systems, orchestrating workflows for graph analytics and real-time insights, optimizing application performance, contributing to architecture and technical design, and collaborating with distributed engineering teams.

Build high-impact full-stack features and reusable services for marketing, signup, KYC, onboarding, and funding experiences across web and mobile. Collaborate with product, design, data, and infrastructure teams to improve activation, retention, and monetization. Design scalable distributed systems, participate in architecture discussions, measure results through experimentation, and maintain strong performance, reliability, and security standards in a globally distributed environment.

The Backend Engineer will develop and maintain features for Restream web services, design backend APIs, ensure infrastructure resilience, and contribute to a collaborative team environment.

Design, build, and maintain core reliability components (rate limiters, schema migration tools, circuit breakers, Redis caching). Troubleshoot and optimize production systems (PostgreSQL, distributed services), lead incident investigations, create reusable resilience tools, and promote reliability best practices across engineering teams while leveraging AI coding tools.