C++ Developer - US Market

🏢 Summary: Senior C++ Developer role focused on building and maintaining real-time backend systems for a fixed-income trading platform in the fintech domain. The position involves developing mission-critical trading applications for Treasury and Mortgage products used by major financial institutions. Work is fully remote on a B2B contract with overlap with New York hours. 🗂️ Requirements: 5+ years of professional C++ development experience, Strong knowledge of OOP, Strong knowledge of design patterns, Strong knowledge of templates, Strong knowledge of multithreading, Strong knowledge of data structures, Experience with SQL and databases, Proficiency with GIT, Ability to work with real-time backend systems, Minimum 6-hour overlap with New York working hours 📃 Skills: C++, OOP, SQL, Databases, GIT, Multithreading, Templates, DataStructures 🏢 Description: Join our client’s team in the fintech industry , building a cutting-edge fixed-income trading platform. The role focuses on Treasury and Mortgage trading product groups – two of the most liquid asset classes worldwide. This is a unique opportunity to work on mission-critical systems used by leading Investment Banks, Asset Managers, and Hedge Funds . 📌 C++ Developer – Real-Time Trading Applications (Windows/Linux) Key Information 📍 Work mode: 100% Remote 🕒 Contract type: B2B 💼 Experience level: Senior ⏰ Availability: Minimum 6h overlap with New York working hours Tech Stack C++ (OOP, Data Structures, Templates, Multithreading) SQL, Databases Version Control (GIT) Nice to have: Python, Perl, Shell Scripting 🔹 Job Responsibilities Develop and maintain backend servers in C++ for real-time trading applications Work across all phases of the project lifecycle Collaborate with business teams to deliver client-focused solutions Cooperate with QA and support teams to resolve issues ✅ Requirements 5+ years of professional C++ development experience Strong knowledge of OOP, design patterns, templates, multithreading, data structures Experience with databases and SQL Proficiency with GIT Strong analytical and problem-solving skills Excellent communication skills and ability to work independently 🌟 Nice to Have Experience with Visual Studio (Windows) Financial background, especially Fixed Income Knowledge of Perl, Python, Shell scripting Understanding of communication protocols 💰 Offer B2B contract 50–65 USD/hour 100% remote work 🔎 Recruitment Process Initial call Technical verification Client interviews

🏢 Summary: B2B remote contract for a Senior C++ Developer to design, build, and enhance high-performance trading and backend platforms. The role focuses on developing scalable, performance-critical systems and improving an existing technology stack in an international environment. Requires daily overlap with the New York time zone. 🗂️ Requirements: 5+ years commercial experience with C++, Strong knowledge of object-oriented programming, Strong knowledge of low-level programming concepts, Experience with multithreading, Understanding of concurrency and synchronization, Experience with sockets and networking, Knowledge of event-driven architectures, Experience with Windows native APIs, Understanding of OS internals, Experience debugging memory leaks, race conditions, deadlocks, stack corruption, Experience with unit testing, Experience participating in code reviews, Experience working with databases 📃 Skills: C++, OOP, LowLevel, Multithreading, Concurrency, Synchronization, Sockets, Networking, EventDriven, Windows, WinAPI, OSInternals, Debugging, Databases, UnitTesting 🏢 Description: We are looking for an experienced Senior C++ Developer to join our client’s engineering team and help build and enhance next-generation trading and backend platforms . This is an opportunity to work on highly scalable, performance-critical systems in an international environment where technology plays a central role in modern financial markets. B2B contract – salary range: $45–65/hour (no paid vacation included) 100% remote job 5–6 hours daily overlap with the New York time zone is required Responsibilities: C++ application development Participate in application design and implementation Enhancement of existing technological platform Identification and resolution of security vulnerabilities Development of back-end services Design and write unit tests Participate in code and design reviews Requirements: 5+ years of commercial experience with C++ Strong knowledge of object-oriented and low-level programming concepts Solid understanding of: multithreading concurrency and synchronization sockets and networking event-driven architectures Windows native APIs and OS internals Experience with debugging complex issues such as memory leaks, race conditions, deadlocks, and stack corruption Good understanding of software engineering best practices, including unit testing and code reviews Experience working with databases Strong analytical and problem-solving skills Ability to work independently and collaboratively within international teams Degree in Computer Science or a related field Nice to Have: Experience in the financial industry, especially Fixed Income Knowledge of Python scripting JavaScript experience Understanding of communication protocols and network programming fundamentals

🏢 Summary: Remote B2B role for an experienced C++ Software Engineer to develop and enhance distributed, low-latency financial trading systems for Fixed Income and Derivatives. The position focuses on building, debugging, and optimizing high-throughput systems in real-time trading environments. Requires strong expertise in modern C++ and distributed architecture within Windows/Linux platforms. 🗂️ Requirements: Bachelor’s degree in Computer Science or related field, 5+ years of professional C++ development experience, Experience with C++14 and C++20, Proficiency in object-oriented design and STL, Strong knowledge of multithreading and concurrency, Experience with TCP/IP and network programming, Experience building distributed, high-throughput, low-latency systems, Strong debugging skills in large codebases, Experience working in Windows and Linux environments, Ability to use AI tools to support development and debugging 📃 Skills: C++, C++14, C++20, STL, OOP, Multithreading, Concurrency, Synchronization, Parallelism, TCP/IP, Networking, Windows, Linux, DistributedSystems, LowLatency, HighThroughput, Debugging, SQL, AI 🏢 Description: 🚀 Software Engineer (C++) – Financial Trading Systems Key Details: 🌍 Work Model: 100% Remote 🕒 Working Hours: NYC Time Zone (Minimum 6h overlap required) 💰 Contract & Rate: B2B, 50 - 65 USD 💻 About the Role We are seeking a highly motivated Software Engineer (C++) to work on all aspects of our distributed financial trading systems. This role requires strong C++ development and debugging skills, the ability to understand intricate architectures, and breaking down issues in real-time, distributed financial trading environments. 🛠️ Job Responsibilities Develop and enhance core trading systems for Fixed Income and Derivative Securities. Work effectively in a small, high-performing software development team. Collaborate with both technical team members and non-technical business stakeholders. Contribute to the continuous improvement of the trading technology stack. 🎯 Required Qualifications Education: Bachelor’s degree in Computer Science or a related field. Experience: 5+ years of professional C++ development experience (C++14/20) in Windows/Linux environments. Core Technical Skills: Strong proficiency in object-oriented design, STL, multithreading, and concurrency (synchronization, parallelism). Networking: Solid understanding of networking fundamentals (TCP/IP, latency, throughput) and network programming. System Architecture: Proven experience building complex, distributed, high-throughput, low-latency, and resilient systems. Debugging: Strong debugging skills and the ability to quickly understand and work within large, complex codebases. Modern Tools: Demonstrated ability to leverage AI tools to accelerate ramp-up on large codebases, improve system understanding, and enhance debugging and development productivity. Soft Skills: Strong communication skills with the ability to collaborate effectively across technical and business teams. Self-driven, proactive, and capable of independently ramping up in complex environments. 🌟 Preferred Qualifications Domain Knowledge: Experience building financial software or trading systems (Fixed Income, Derivatives). Best Practices: Strong focus on code quality, testing methodologies, and system reliability. Databases: Familiarity with SQL stored procedures and relational database design and implementation. This role is not perfectly suited for you, but you have a friend who would fit? Recommend your friend and get up to 5000 zł! Referral Program: Talent from your network

🏢 Summary: Senior C++ Software Engineer contract focused on modernizing and scaling a business-critical quantitative analytics platform for real-time pricing, trading, and risk management. The role involves cross-platform migration from Windows to Linux, platform engineering, and improving architecture, scalability, and reliability within a large-scale C++ environment. Onsite assignment in Copenhagen until December 2026 with possible extension. 🗂️ Requirements: 10+ years of C++ development experience, Proven multi-platform C++ development experience, Strong experience with CMake, In-depth knowledge of threading, In-depth knowledge of memory management, Experience with Windows and Linux development environments 📃 Skills: C++, CMake, Linux, Windows, Threading, MemoryManagement 🏢 Description: On behalf of a client within the financial services sector, we are looking for a Senior C++ Software Engineer to support the development and modernization of a business-critical quantitative analytics platform used for real-time pricing, trading, and risk management. The assignment focuses on platform engineering, cross-platform development, and improving the scalability and reliability of a complex analytics environment. You will join an experienced engineering team working on the evolution of a large-scale C++ platform as it expands into areas such as electronic trading, automated execution, and data-driven analytics. Main Responsibilities: Migrate the application from Windows to multiple platforms (Linux and Windows) Review and improve platform architecture, scalability, and reliability. Key Requirements: Expert C++ development with 10+ years of experience Proven experience in multi-platform C++ development Strong experience with CMake In depth understanding of threading and memory management Nice to Have: Experience in financial markets or building systems for trading, risk, or analytics Other Details : Location : Onsite in Copenhagen, Denmark Contract Duration : From as soon as possible until December 2026, with a possible extension.

🏢 Summary: Oferta dotyczy rozwoju i utrzymania wydajnych, rozproszonych systemów transakcyjnych dla sektora finansowego z wykorzystaniem C++ w środowiskach czasu rzeczywistego. Rola obejmuje pracę nad systemami low-latency i high-throughput dla instrumentów Fixed Income oraz Derivatives, współpracę z zespołami technicznymi i biznesowymi oraz analizę złożonych architektur. 🗂️ Requirements: Wykształcenie wyższe informatyczne lub pokrewne, Minimum 5 lat doświadczenia komercyjnego w C++, Znajomość C++14 i C++20, Doświadczenie w środowiskach Windows i Linux, Bardzo dobra znajomość OOP, Znajomość STL, Doświadczenie w programowaniu wielowątkowym i współbieżności, Znajomość TCP/IP i programowania sieciowego, Doświadczenie z systemami rozproszonymi, Doświadczenie z systemami high-throughput i low-latency, Umiejętność debugowania dużych baz kodu, Praktyczne wykorzystanie narzędzi AI do rozwoju oprogramowania, Umiejętność współpracy z zespołami technicznymi i biznesowymi 📃 Skills: C++, C++14, C++20, STL, OOP, TCP/IP, Windows, Linux, SQL, Multithreading, Concurrency, Networking, Debugging, AI 🏢 Description: Poszukujemy zmotywowanego Inżyniera Oprogramowania C++, który dołączy do zespołu rozwijającego rozproszone systemy transakcyjne dla sektora finansowego. Osoba na tym stanowisku będzie odpowiedzialna za rozwój oraz utrzymanie wydajnych systemów tradingowych, analizowanie złożonych architektur oraz rozwiązywanie problemów w środowisku systemów rozproszonych działających w czasie rzeczywistym. Zakres obowiązków Rozwój i rozbudowa kluczowych systemów transakcyjnych dla instrumentów o stałym dochodzie (Fixed Income) oraz instrumentów pochodnych (Derivatives). Praca w niewielkim, wysoko wykwalifikowanym zespole programistów. Współpraca zarówno z zespołem technicznym, jak i interesariuszami biznesowymi. Udział w ciągłym doskonaleniu technologii wykorzystywanych w platformie transakcyjnej. Wymagania Wykształcenie Ukończone studia wyższe na kierunku Informatyka lub pokrewnym. Doświadczenie Minimum 5 lat komercyjnego doświadczenia w programowaniu w języku C++ (C++14/C++20) w środowiskach Windows i Linux . Umiejętności techniczne Bardzo dobra znajomość: programowania obiektowego, biblioteki STL , programowania wielowątkowego, współbieżności (synchronizacja, równoległość). Dobra znajomość zagadnień sieciowych: TCP/IP, opóźnienia (latency), przepustowość (throughput), programowanie sieciowe. Doświadczenie w projektowaniu i rozwijaniu: systemów rozproszonych, systemów o wysokiej wydajności (high-throughput), systemów niskolatencyjnych (low-latency), rozwiązań odpornych na awarie (resilient systems). Bardzo dobre umiejętności debugowania oraz szybkiego odnajdywania się w dużych i złożonych bazach kodu. Praktyczne wykorzystywanie narzędzi AI wspierających rozwój oprogramowania (np. do analizy kodu, debugowania, zrozumienia architektury i zwiększania produktywności). Kompetencje miękkie Bardzo dobra komunikacja oraz umiejętność współpracy z zespołami technicznymi i biznesowymi. Samodzielność, proaktywność oraz umiejętność szybkiego wdrażania się w złożone środowiska projektowe. Mile widziane Doświadczenie w tworzeniu oprogramowania dla sektora finansowego lub systemów tradingowych, szczególnie dla: instrumentów o stałym dochodzie (Fixed Income), instrumentów pochodnych (Derivatives). Dbałość o jakość kodu, testowanie oraz niezawodność systemów. Znajomość relacyjnych baz danych, projektowania baz danych oraz procedur składowanych SQL (SQL Stored Procedures).

🏢 Summary: Long-term remote B2B contract for a C++/C# Developer focused on enterprise and public-sector software development, system integration, and CI/CD-driven delivery. The role involves developing scalable applications, integrating third-party components, maintaining documentation, and collaborating on architecture and testing processes. Occasional travel to Germany is required as part of a 48‑month project. 🗂️ Requirements: German C1, English B1, Bachelor's degree in Computer Science or equivalent, 5+ years of software development experience, 4-6 years of C++ experience, 2-3 years of C# experience, 5+ years of Git experience, Experience with Jira, Experience with Confluence, Windows administration skills, 2+ years of unit testing experience, 2+ years of third-party software integration experience, Knowledge of CI/CD in Visual Studio, Experience preparing technical specifications and documentation, Experience with Agile/Scrum or Waterfall/V-Model methodologies, Experience in enterprise or public-sector projects 📃 Skills: C++, C#, Git, Jira, Confluence, Windows, CI/CD, VisualStudio, Scrum, Agile, Waterfall, V-Model, UnitTesting 🏢 Description: Overview of the Role: The C++ / C# Developer will engage in complex software development and system integration projects, primarily within the enterprise or public-sector domains, driving the delivery of robust, scalable solutions. What we offer: - Long Term B2B Contract - Rate: 140-160 PLN/H + VAT - Remote role Main Responsibilities: - Develop, test, and maintain high-quality software solutions. - Collaborate with team members for system integration tasks. - Contribute to the design and architecture of technical specifications. - Participate in reviews and suggest improvements in software coding practices. - Document all development processes and updates for project transparency. - Ensure adherence to CI/CD practices within Visual Studio environments. - Support unit testing and maintain test processes. - Integrate third-party software components efficiently. - Facilitate knowledge transfer within the team. - Assist in troubleshooting and maintaining existing applications. Key Requirements: - Fluent in German (C1 level, spoken and written). - Proficient in English (minimum B1 level, spoken and written). - Bachelor's degree in Computer Science or equivalent with at least 5 years of experience. - Extensive knowledge of C++ and/or C# (4-6 years for C++, 2-3 years for C#). - Experience with Git (branching, merging) for at least 5 years. - Familiarity with Jira and Confluence. - Competence in Windows system administration, including terminal and console usage. - Hands-on experience with unit testing and test processes (minimum 2 years). - Experience integrating third-party software (minimum 2 years, ideally 4 years). - Knowledge of CI/CD processes in Visual Studio environments (minimum 1 year). - Experience in preparing technical specifications and documentation (minimum 1 year). - Exposure to large public sector projects or comparable private sector engagements. - Familiarity with various software development models (Waterfall/V-Model, Iterative, Agile/Scrum). - Willingness to facilitate knowledge transfer within the team. Nice to Have: - Experience in public sector projects such as KONSENS. - Background in team leadership or mentoring roles. - Knowledge of additional programming languages or technologies. Other Details: - Remote working opportunities from Poland with occasional visits to Germany (not exceeding once a quarter). - Candidates should be available for up to a month. - Long-term cooperation on a 48-month project. - Standard business working hour schedule.

🏢 Summary: Long-term remote B2B contract for a C++/C# Developer to deliver and integrate enterprise or public-sector software solutions. The role focuses on developing, maintaining, and integrating robust applications while ensuring CI/CD compliance and high code quality. The project involves complex system integration and long-term cooperation within an international environment. 🗂️ Requirements: Bachelor’s degree in Computer Science or equivalent, Minimum 5 years of professional software development experience, 4–6 years of C++ experience or 2–3 years of C# experience, Minimum 5 years of experience with Git (branching, merging), Experience with Windows system administration (terminal, console), Minimum 2 years of unit testing experience, Minimum 2 years of third-party software integration experience, Minimum 1 year of CI/CD experience in Visual Studio environments, Experience in preparing technical specifications and documentation, Experience working with Jira and Confluence, Knowledge of software development methodologies (Waterfall, V-Model, Agile/Scrum) 📃 Skills: C++, C#, Git, Jira, Confluence, Windows, CI/CD, VisualStudio, UnitTesting, Integration, Scrum, Waterfall, V-Model 🏢 Description: Overview of the Role: The C++ / C# Developer will engage in complex software development and system integration projects, primarily within the enterprise or public-sector domains, driving the delivery of robust, scalable solutions. What we offer: Long Term B2B Contract Rate: 140-160 PLN/ H+ VAT Remote role Main Responsibilities: Develop, test, and maintain high-quality software solutions. Collaborate with team members for system integration tasks. Contribute to the design and architecture of technical specifications. Participate in reviews and suggest improvements in software coding practices. Document all development processes and updates for project transparency. Ensure adherence to CI/CD practices within Visual Studio environments. Support unit testing and maintain test processes. Integrate third-party software components efficiently. Facilitate knowledge transfer within the team. Assist in troubleshooting and maintaining existing applications. Key Requirements: Fluent in German (C1 level, spoken and written). Proficient in English (minimum B1 level, spoken and written). Bachelor's degree in Computer Science or equivalent with at least 5 years of experience. Extensive knowledge of C++ and/or C# (4-6 years for C++, 2-3 years for C#). Experience with Git (branching, merging) for at least 5 years. Familiarity with Jira and Confluence. Competence in Windows system administration, including terminal and console usage. Hands-on experience with unit testing and test processes (minimum 2 years). Experience integrating third-party software (minimum 2 years, ideally 4 years). Knowledge of CI/CD processes in Visual Studio environments (minimum 1 year). Experience in preparing technical specifications and documentation (minimum 1 year). Exposure to large public sector projects or comparable private sector engagements. Familiarity with various software development models (Waterfall/V-Model, Iterative, Agile/Scrum). Willingness to facilitate knowledge transfer within the team. Nice to Have: Experience in public sector projects such as KONSENS. Background in team leadership or mentoring roles. Knowledge of additional programming languages or technologies. Other Details: The position offers remote working opportunities from Poland with occasional visits to Germany (not exceeding once a quarter). Candidates should be available for up to a month and are expected for long-term cooperation on a 48-month project. A standard business working hour schedule is provided.

🏢 Summary: Long-term remote B2B contract for a C++/C# Developer focused on complex enterprise and public-sector software development and system integration projects. The role involves building, integrating, testing, and maintaining scalable solutions within CI/CD-driven Visual Studio environments. The developer contributes to architecture, technical documentation, and integration of third-party components in large-scale projects. 🗂️ Requirements: Fluent German C1, English minimum B1, Bachelor's degree in Computer Science or equivalent, Minimum 5 years professional experience, 4–6 years experience in C++ or 2–3 years in C#, Minimum 5 years experience with Git (branching, merging), Experience with Jira and Confluence, Windows system administration skills, Minimum 2 years unit testing experience, Minimum 2 years experience integrating third-party software, Minimum 1 year experience with CI/CD in Visual Studio, Experience preparing technical specifications and documentation, Experience with Waterfall, V-Model, or Agile/Scrum methodologies 📃 Skills: C++, C#, Git, Jira, Confluence, Windows, CI/CD, VisualStudio, UnitTesting, Scrum, Waterfall, V-Model 🏢 Description: Overview of the Role: The C++ / C# Developer will engage in complex software development and system integration projects, primarily within the enterprise or public-sector domains, driving the delivery of robust, scalable solutions. What we offer: Long Term B2B Contract Remote role Main Responsibilities: Develop, test, and maintain high-quality software solutions. Collaborate with team members for system integration tasks. Contribute to the design and architecture of technical specifications. Participate in reviews and suggest improvements in software coding practices. Document all development processes and updates for project transparency. Ensure adherence to CI/CD practices within Visual Studio environments. Support unit testing and maintain test processes. Integrate third-party software components efficiently. Facilitate knowledge transfer within the team. Assist in troubleshooting and maintaining existing applications. Key Requirements: Fluent in German (C1 level, spoken and written). Proficient in English (minimum B1 level, spoken and written). Bachelor's degree in Computer Science or equivalent with at least 5 years of experience. Extensive knowledge of C++ and/or C# (4-6 years for C++, 2-3 years for C#). Experience with Git (branching, merging) for at least 5 years. Familiarity with Jira and Confluence. Competence in Windows system administration, including terminal and console usage. Hands-on experience with unit testing and test processes (minimum 2 years). Experience integrating third-party software (minimum 2 years, ideally 4 years). Knowledge of CI/CD processes in Visual Studio environments (minimum 1 year). Experience in preparing technical specifications and documentation (minimum 1 year). Exposure to large public sector projects or comparable private sector engagements. Familiarity with various software development models (Waterfall/V-Model, Iterative, Agile/Scrum). Willingness to facilitate knowledge transfer within the team. Nice to Have: Experience in public sector projects such as KONSENS. Background in team leadership or mentoring roles. Knowledge of additional programming languages or technologies. Other Details: The position offers remote working opportunities from Poland with occasional visits to Germany (not exceeding once a quarter). Candidates should be available for up to a month and are expected for long-term cooperation on a 48-month project. A standard business working hour schedule is provided.

🏢 Summary: Offer for a C++ Developer responsible for developing and maintaining software solutions, ensuring high code quality, and participating in continuous integration processes. The role involves creating new functionalities, modifying existing systems, and analyzing, testing, and fixing reported issues. Position is primarily onsite in Poznań with potential hybrid work later. 🗂️ Requirements: Good knowledge of C++, Ability to use Windows or Linux command line (CLI), Basic knowledge of relational databases, Knowledge of SQL, Experience with version control systems SVN or GIT, Residence in Poznań area or willingness to relocate 📃 Skills: C++, SQL, SVN, GIT, CLI, Windows, Linux, RDBMS 🏢 Description: Obecnie poszukujemy dobrze zorganizowanej i dbającej o wysokie standardy pracy osoby, która chciałaby dołączyć do naszego zespołu jako C++ Developer. Zależy nam na osobach, które mieszkają w Poznaniu lub okolicach - bądź są gotowe do relokacji! Jak pracujemy, co dla nas Ważne: Stawiamy na wytwarzanie oprogramowania techniką ciągłej integracji. Stawiamy na bezpośrednią komunikację w zespole. Stawiamy na różnorodność w zespole i postaramy się wykorzystać Twój potencjał. Stawiamy na długotrwałą współpracę. Twój zakres obowiązków: Tworzenie poprawnych, działających programów. Wprowadzanie zmian w istniejących funkcjonalnościach. Dbanie o jakość tworzonych rozwiązań. Analiza, testy i usuwanie zgłaszanych błędów. Wymagania: Dobra znajomość C++. Umiejętność korzystania z powłoki systemowej Windows / Linux (CLI). Podstawowa wiedza na temat relacyjnych baz danych oraz znajomość SQL. Znajomość narzędzi systemu kontroli wersji SVN lub GIT. Mile widziane: Znajomość technologii: Qt, PostgreSQL, Python. Znajomość języka angielskiego. Orientacja w zagadnieniach związanych z branżą energetyczną. Oferujemy: Zatrudnienie na umowę o pracę lub kontrakt B2B Pracę stacjonarna w komfortowym biurze (Poznań, z możliwością pracy hybrydowej w późniejszym okresie Ciekawe projekty branżowe np. SCADA / ADMS dla koncernów energetycznych w Polsce i za zagranicą (TAURON, ENERGA, ENEA, ENEXIS, STEDIN) Rozwój zawodowy – wsparcie merytoryczne całego zespołu oraz zewnętrzne i firmowe szkolenia / warsztaty. Elastyczne godziny pracy (zaczynamy pracę między 7:00 a 9:00) Ubezpieczenie grupowe, dofinansowanie do urlopów wypoczynkowych, prywatnej opieki medycznej i karty Multisport Zapraszamy do aplikowania! Informujemy, że do wybranych kandydatów zostanie przesłany kwestionariusz rekrutacyjny (jako część procesu rekrutacyjnego).

🏢 Summary: Senior C++ Developer role focused on building production-grade commercial software using modern C++ and MFC across the full software development lifecycle. The position involves software design, implementation, testing, code reviews, and performance optimisation in collaboration with an experienced engineering team. The offer includes long-term remote cooperation on a B2B contract. 🗂️ Requirements: Strong commercial experience with modern C++, Experience with MFC, Strong understanding of Object-Oriented Programming, Knowledge of SOLID principles, Experience with Microsoft SQL Server, Experience with query optimisation and execution plan analysis, Experience implementing and maintaining unit tests, Knowledge of software design patterns, Experience with performance profiling and optimisation, Experience delivering production-quality software, Experience working within the SDLC, English level B2/C1 📃 Skills: C++, MFC, SQL, SQLServer, OOP, SOLID, STL, Concurrency, Templates, UnitTesting, SDLC, C#, .NET 🏢 Description: Join an established software development team building production-grade commercial software. As a Senior C++ Developer, you'll work with modern C++ and MFC, contributing across the full software development lifecycle—from design and implementation to testing and delivery. You'll collaborate with experienced engineers, participate in code reviews and technical discussions, and help deliver high-quality software while driving continuous improvement. Requirements Strong commercial experience with modern C++ (C++11 and newer) , including memory management, templates, concurrency, and the C++ Standard Library Experience with MFC (Microsoft Foundation Class Library) Strong understanding of Object-Oriented Programming, including: SOLID principles encapsulation inheritance polymorphism Experience with Microsoft SQL Server, including query optimisation and execution plan analysis Experience implementing and maintaining unit tests across UI, back-end services, and database layers Knowledge of software design patterns Experience with performance profiling and optimisation techniques Experience delivering maintainable, production-quality software in a commercial environment Experience working within the Software Development Life Cycle (SDLC), including code reviews, design discussions, and collaborative delivery English at B2/C1 level Nice to Have Experience with C# Experience with the .NET ecosystem , particularly in cross-language integration or tooling We Offer B2B contract 120–150 PLN/h 100% remote work Long-term cooperation Immediate start Recruitment Process Recruitment screening Interview with the client Final decision