Backend Engineer

• With the support of your team’s tech lead and manager, you will break down larger projects into individual tasks, deliver them in multiple phases, and collaborate with others to ensure timely delivery of your work.
• You will support your peers and stakeholders in the product development lifecycle by collaborating with product management, design & analytics by participating in ideation, articulating technical constraints, and partnering on decisions that properly consider risks and trade-offs.
• You will support the operations and availability of your team’s artifacts by creating and monitoring metrics, escalating when needed, and supporting “keep the lights on” & on-call efforts.
• You will contribute to a sense of community on your team by engaging in growth and development activities such as participation in the interview process.

Software Engineer II, Backend – Collections

• Maintain core system components and drive optimization tasks focused on performance and speed
• Work closely with logging, monitoring, and telemetry features, improving error handling and system visibility
• Develop software mainly using Golang and C, while maintaining and gradually replacing legacy Bash scripts
• Create automated tests using Python to cover regressions and bridge coverage gaps
• Investigate complex bugs, track system calls, and analyze multithreaded dependencies in a codebase
• Take part in technical discussions with the team to define how to best implement requirements

Golang Software Engineer, Python/C

C Software Engineer, Python

Full-stack Engineer

• Consultar en áreas de ingeniería de software
• Actuar como asesor técnico de confianza
• Diseñar el ciclo de vida y procesos de desarrollo de software
• Recomendar decisiones y revisar la arquitectura de soluciones de software
• Definir estándares y mejores prácticas de arquitectura
• Asegurar la consistencia entre arquitecturas empresariales

Software Factory Architect – SOFA ARCH

• Design, develop, and maintain high-quality software applications using C# and the .NET framework
• Enhance and evolve public cloud-based customer experiences, ensuring performance, scalability, and reliability
• Apply best practices and coding standards to deliver clean, maintainable, and scalable code
• Investigate, troubleshoot, and resolve issues reported by customers and internal stakeholders
• Participate in code reviews to uphold engineering standards and improve overall code quality
• Ensure software reliability by implementing automated tests and validating end-to-end functionality
• Own the delivery lifecycle, taking features from development through successful production release

Software Development Engineer

Frontend Engineer

• Prowadzenie pełnego cyklu tworzenia funkcjonalności — od koncepcji, przez projekt techniczny, po wdrożenie produkcyjne.
• Rozwój frontendu w Angularze oraz backendu w C#/.NET.
• Udział w modernizacji architektury systemu, w tym: unowocześnianie monolitu, konteneryzacja usług, migracja do AWS.
• Budowanie i utrzymywanie pipeline’ów CI/CD oraz automatyzacji procesów wdrożeniowych.
• Projektowanie skalowalnych usług backendowych i responsywnych interfejsów użytkownika.
• Dbanie o jakość kodu, testy i bezpieczeństwo.
• Przekładanie wymagań produktowych na gotowe rozwiązania techniczne.
• Praca z relacyjnymi bazami danych i optymalizacja zapytań.
• Mentoring mniej doświadczonych inżynierów i promowanie dobrych praktyk w zespole.

Full-Stack Developer, C# – Angular

• Designing, developing, and maintaining modern APIs and backend services
• Creating new software features within our existing product architecture
• Contributing to the evolution of scalable, maintainable, and secure software architectures
• Developing web-based applications and services using modern software technologies
• Leveraging AI-assisted development tools and practices to improve productivity, code quality, and innovation
• Contributing to engineering best practices, software quality, and development standards
• Supporting and maintaining the function domain and technology roadmap
• Participating in technical design discussions and architectural decision-making
• Coaching and mentoring colleagues within the software engineering community
• Collaborating with product management, UX, and other software teams to deliver customer value

Software Engineer

• Design, develop and maintain complex, business-critical application and system components, Kotlin
• Take end-to-end ownership of solutions, from requirements analysis to implementation and production support
• Investigate and resolve incidents and problems, including root-cause analysis
• Support technical design decisions with focus on scalability, performance, security and maintainability
• Review code and architecture to ensure quality, consistency and best practice standards
• Identify technical debt, risks and improvement opportunities, and actively drive continuous improvement
• Collaborate with product owners, business analysts, QA, operations and other IT teams
• Mentor and support junior developers through coaching, code reviews and knowledge sharing
• Contribute to technical documentation, knowledge bases and operational runbooks

Senior IT Developer, Kotlin

• Develop, maintain, and troubleshoot software solutions using C# ; experience with VB.NET and/or VB6 is an advantage
• Design, develop, optimize, and troubleshoot transactional database solutions using SQL, including stored procedures, functions, triggers, replication, and data integration; experience with SQL anywhere is an advantage.
• Build, maintain, and support applications leveraging legacy Windows technologies such as ODBC, Windows Services, COM+, MSMQ, and the Windows Registry.
• Provide advanced technical support to customers, Customer Success, and Technical Support teams by troubleshooting complex application, database, integration, and infrastructure issues, performing root cause analysis, and implementing effective resolutions.
• Develop and maintain containerized applications and deployment pipelines using Docker and Kubernetes.
• Contribute to the deployment, monitoring, and operation of cloud-based solutions hosted on AWS.
• Participate in software architecture, code reviews, and technical design discussions, promoting engineering best practices and continuous improvement.
• Support the modernization of legacy applications and migration of existing functionality to scalable cloud-native architectures.
• Facilitate knowledge transfer activities and create technical documentation to improve product supportability and operational efficiency.

• Large-scale enterprise SAP S/4HANA transformation programme (Greenfield & Brownfield)
• Work alongside experienced SAP specialists on a business-critical international programme
• Hands-on involvement across development, enhancements, Change Requests, testing, Go-Live & Hypercare
• Opportunity to contribute to a complex, long-term transformation with modern SAP technologies

ABAP Developer – Freelance

Android Engineer

• Develop and maintain Android applications using Kotlin and Java
• Work with RESTful APIs, networking, and XML/JSON data formats
• Build modern UI components using Jetpack Compose
• Implement reactive and asynchronous patterns using Coroutines, Flow, ViewModel, and LiveData
• Apply architectural patterns including MVVM, MVI, and Clean Architecture
• Integrate APIs using Retrofit and OkHttp
• Implement dependency injection using Hilt or Dagger and apply modularization principles
• Write and maintain unit tests (JUnit, MockK) and UI tests
• Ensure solutions meet high standards of performance, security, and user experience
• Maintain high code quality and contribute to knowledge sharing within the team
• Manage source code and collaborate using Git

Android Developer

• Develop and maintain a native iOS banking application using Swift and SwiftUI.
• Work with RESTful APIs, networking, and JSON data formats via a modular networking layer.
• Build features within a highly modularized multi-module architecture (e.g. Tuist, Swift Package Manager).
• Apply architectural patterns including MVVM, RIB, and Clean Architecture.
• Implement reactive and asynchronous programming using Combine and Swift Concurrency (async/await).
• Develop secure solutions including authentication, biometrics, device integrity, fraud detection, and cryptographic signing.
• Write and maintain unit tests (SwiftTest) and use mocks/test-support frameworks.
• Ensure high standards of performance, security, and user experience.
• Maintain high code quality and contribute to knowledge sharing within the team.
• Collaborate using Git and contribute to CI/CD pipelines (Fastlane).

iOS Developer

• Build and maintain the React-based trading user interface.
• Implement dynamic, interactive interfaces for real-time data, including live order book updates, price feeds, and trade executions via WebSockets.
• Own component architecture, state management, and responsive design.
• Optimize rendering, minimize load times, and ensure smooth, low-latency interactions under heavy data loads.
• Collaborate closely with product and design teams to translate complex requirements into intuitive user interfaces.
• Design and maintain TypeScript services, including REST APIs, WebSocket servers, and background services.
• Design and deliver event-driven pipelines that ingest and process pricing and account data.
• Own REST and WebSocket API contracts (OpenAPI / AsyncAPI specs), ensure smooth data flow between frontend and backend, and maintain API documentation.
• Interact with on-chain data, index blockchain events, and bridge smart contracts with off-chain services.
• Develop and maintain comprehensive unit, integration, and end-to-end tests across frontend and backend systems.
• Uphold continuous integration (CI) quality gates and rigorous code review standards.
• Work closely with cross-functional teams, including product, design, and quantitative specialists.

Senior Fullstack Engineer

• Develop and maintain scalable backend services using Python and Django
• Build and extend content management capabilities with Wagtail CMS
• Design and implement GraphQL APIs to power modern frontend applications
• Develop responsive, performant frontend components using React and Next.js
• Collaborate with product, design, and engineering teams to translate business requirements into technical solutions
• Ensure high code quality through code reviews, testing, and adherence to best practices
• Contribute to the product roadmap by providing technical insights and delivery estimates
• Support continuous improvement of development workflows and DevOps practices

Full-stack Developer, Python, Django

• Dołączenie do zespołu pracującego nad Aras Innovator jako .NET Full-Stack Developer
• Tworzenie aplikacji dla złożonych potrzeb przedsiębiorstw na platformie niskokodowej
• Współpraca z innymi członkami zespołu nad dostosowywaniem produktu do potrzeb klientów

Net Full-Stack Developer

• Develop and implement enterprise integrations
• Collaborate with cross-functional teams

Senior ACE Developer – Enterprise Integrations

• Work on tasks that contribute to the team's projects and goals
• Collaborate with your team and stakeholders to create visibility and dialog regarding work risks and trade-offs
• Ensure speed and quality in your work to hit business goals while protecting from downtime
• Engage in growth and development activities to build a sense of community

Software Engineer I, Backend – Collections

• Provide technical leadership and vision for the design and development of highly concurrent, distributed backend systems;
• Drive and own significant architectural decisions, ensuring scalability, reliability and maintainability across the platform;
• Lead performance optimisation initiatives and resolve the most complex system-level challenges;
• Set the standard for testing practices, including Unit, Integration and Smoke tests, enabling fully automated promotion of code to production;
• Define, evolve and enforce coding standards and engineering best practices across the team;
• Act as a technical mentor and leader, supporting the growth of engineers at all levels;
• Collaborate closely with product and engineering leadership to align technical strategy with business goals;
• Provide out-of-hours support as part of an on-call rota.

Staff Software Engineer

• Develop and maintain highly concurrent and distributed backend services;
• Contribute to architectural discussions and help shape technical decisions within the team;
• Design, develop and test new features with a strong focus on quality and reliability;
• Profile and optimise system performance, diagnosing and resolving issues proactively;
• Support the release and documentation of developed features;
• Estimate effort required to develop and implement solutions;
• Contribute to coding standards and development processes;
• Provide out-of-hours support as part of an on-call rota.

Software Engineer III

• Design and develop highly concurrent, distributed backend services with a focus on high availability;
• Take solid ownership of architectural contributions, driving technical decisions within and across teams;
• Lead performance optimisation efforts and proactively diagnose complex system issues;
• Design, develop and test new features, setting a high bar for quality and reliability;
• Support the release and documentation of developed features;
• Define and champion coding standards and development processes;
• Mentor and support more junior engineers within the team;
• Provide out-of-hours support as part of an on-call rota.

Software Engineer jobs in Poland

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Software Engineer II, Backend – Collections

Golang Software Engineer, Python/C

C Software Engineer, Python

Software Factory Architect – SOFA ARCH

Software Development Engineer

Full-Stack Developer, C# – Angular

Software Engineer

Senior IT Developer, Kotlin

Software Engineer

ABAP Developer – Freelance

Android Developer

iOS Developer

Senior Fullstack Engineer

Full-stack Developer, Python, Django

Net Full-Stack Developer

Senior ACE Developer – Enterprise Integrations

Software Engineer I, Backend – Collections

Staff Software Engineer

Software Engineer III

Senior Software Engineer