Junior C++ Developer

🏢 Summary: The role involves designing, developing, and maintaining .NET applications and services with a strong focus on code quality and system reliability. The position includes writing automated tests, participating in architectural discussions, and collaborating with QA and DevOps teams. It is suited for an experienced .NET Developer comfortable working with production systems and modern development practices. 🗂️ Requirements: Commercial experience as .NET Developer, Strong knowledge of C#, Strong knowledge of .NET Framework or .NET 6+, Experience with SQL databases, Understanding of software architecture, Knowledge of data modeling, Experience maintaining production systems, English proficiency B2 or higher 📃 Skills: C#, .NET, SQL, REST, Selenium, Gherkin, Jenkins, HTTPS, LDAP, SSH, SFTP, TLS, Architecture, DataModeling, UnitTesting, IntegrationTesting 🏢 Description: Responsibilities: Designing, developing, and maintaining .NET applications and services Write and maintain automated unit and integration tests Participate in code reviews and architectural discussions Collaborate with QA, DevOps, and product teams Requirements: Commercial experience as a .NET Developer Strong knowledge of C#, .NET Framework and/or .NET 6+ Experience working with SQL databases Understanding of software architecture designs and data modeling Experience maintaining production systems Communicative English (B2) Nice to have: Experience creating technical documentation Experience with REST API, Selenium, Gherkin, Jenkins, HTTPS, LDAP, SSH, SFTP, TLS What we offer: Flexible forms of employment and working hours (CoE or B2B) An interesting, challenging job in the dynamically developing Capital Group company; Work on innovative projects using modern technologies; Direct impact on shaping the image of the Capital Group's companies on the market; Possibility to develop competences in a wide range; Attractive salary; Stability of employment and a friendly work atmosphere; Cool benefits, among others integration meetings, internal company competitions, fruit Tuesdays, sweet Thursdays and much more;

🏢 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: Development role focused on designing and delivering software solutions for a UK financial institution, working closely with business teams across the full technology stack. The position involves building modern .NET and Angular applications, contributing to solution design, and supporting production systems. 🗂️ Requirements: 5+ years experience with .NET and C#, Commercial experience with Angular, Experience with .NET 6 or higher, Experience with .NET Core, Experience with SQL databases, Cross-stack development experience, Experience with API design and development, Knowledge of Azure cloud 📃 Skills: .NET, .NETCore, C#, Angular, SQL, Azure, APIs 🏢 Description: We are looking for a Developer to join our team and work with us for one of our clients - financial institution from UK. Main goals: design & development of software solutions to support the business requirements. Responsibilities Design, develop and deliver software solutions in conjunction with the Business Teams Work in conjunction with the Business Teams during the design process to contribute to business and technical solutions Actively promote and distribute knowledge amongst peers in the development team Identify innovative opportunities which will improve the businesses ability to succeed Provide expert / second line application support to users About You Must have: +5 years of experience: .NET, C#, Angular & English Skills: Cross stack working knowledge, including the following mandatory technologies: Microsoft technologies including .NET (6 and above) .NET Core C# Angular SQL Desirable: Knowledge of Azure cloud Knowledge of API Design and Development Analytical skills and ability to understand complex problems Willingness to investigate, trial and propose new concepts, technologies and approaches Enthusiastic and flexible attitude to work Nice to have: Copilot experience Understanding of automated testing techniques Other Relevant Information: Team player Good attention to detail Good communication skills Willing to take responsibility What we offer Friendly organisational culture Work in a small company in a friendly atmosphere, where your satisfaction is an important value B2B or work contract Flexible working format - remote, office-based or hybrid Flexible working hours Integration events English lessons

🏢 Summary: Senior software engineering role focused on designing and developing complex systems from scratch, defining technical solutions, and maintaining development best practices. The position involves full-stack development with .NET technologies, frontend frameworks, databases, and cloud-related processes. Flexible remote work and career growth opportunities are included. 🗂️ Requirements: 5+ years of IT experience, Experience with Microsoft .NET, Knowledge of ASP.NET MVC, Knowledge of Web API, Experience with SQL or NoSQL databases, Experience with ORM frameworks, Frontend development experience, Knowledge of HTML5, Knowledge of JavaScript or TypeScript, Experience with React, Knowledge of software design patterns and practices, English communication skills for technical discussions 📃 Skills: .NET, ASP.NET, MVC, WebAPI, SQL, NoSQL, ORM, HTML5, JavaScript, TypeScript, React, Azure, AWS, GoogleCloud, CI/CD, SCRUM, PowerBI, Databricks 🏢 Description: We are looking for experienced professionals who can design and develop complex software systems from scratch, design project-wide technical solutions, establish and control the best development practices. Requirements: 5+ years of experience in IT Experience with Microsoft .NET, knowledge of ASP.NET MVC and Web API Experience with databases (SQL or NoSQL), ORM frameworks Experience in Frontend development (HTML 5, JavaScript / TypeScript / React) Good knowledge and hands-on skills in patterns and practices English skills should be sufficient for taking part in conversations on the technical aspects of projects Nice to have: Experience in Agentic Tools and skills, AI-assisted coding models & tools, Spec-Driven Development Hands-on experience with cloud services (MS Azure, AWS, Google Cloud) Experience in setting up and supporting development processes (CI/CD, code review, static code analysis, automated testing) Experience working with SCRUM Experience in creating technical documentation Experience with Power BI and Databricks to support data-driven features and analytics integration We offer: Projects for such clients as PayPal, Wargaming, Xerox, Philips, Adidas and Toyota Competitive compensation that depends on your qualification and skills Career development system with clear skill qualifications Flexible working hours aligned to your schedule Options to work remotely

🏢 Summary: The offer is for a .NET Developer to build and maintain web applications and APIs using C#/.NET and Azure services, starting in March 2026. The role involves developing backend solutions, writing automated tests, and collaborating with QA and DevOps in an agile environment. The project focuses on modern technologies and production system maintenance. 🗂️ Requirements: Availability from March 2026, Commercial experience as .NET Developer, Strong knowledge of C# and .NET, Experience with ASP.NET (.NET Core or newer), Experience with SQL databases, Experience with ORM frameworks, Experience with Azure services, Experience with Angular, Knowledge of software architecture and data modeling, Experience maintaining production systems, English level B2 or higher 📃 Skills: C#, .NET, ASP.NET, .NETCore, SQL, ORM, Azure, Angular, CI/CD, Docker, Kubernetes, Podman 🏢 Description: Please note: the project starts at the beginning of March 2026. We are therefore looking for candidates available from that date. Responsibilities: Development and maintainance of web applications ( ASP.NET , APIs, Azure Services) using C#/.NET Write and maintain automated unit and integration tests Participate in code reviews and architectural discussions Collaborate with QA, DevOps, and product teams Requirements: Commercial experience as a .NET Developer Strong knowledge of C#, .NET, ASP.NET (.NET Core or newer) Experience working with SQL databases and ORM frameworks Experience with Azure services Experience with Angular Understanding of software architecture designs and data modeling Experience maintaining production systems Communicative English (B2 level or higher) Nice to have: Experience with CI/CD pipelines Experience working with containerized environments (Docker, Podman, Kubernetes) What can we offer: Flexible forms of employment and working hours (CoE or B2B) An interesting, challenging job in the dynamically developing Capital Group company; Work on innovative projects using modern technologies; Direct impact on shaping the image of the Capital Group's companies on the market; Possibility to develop competences in a wide range; Attractive salary; Stability of employment and a friendly work atmosphere; Cool benefits, among others integration meetings, internal company competitions, fruit Tuesdays, sweet Thursdays and much more;

🏢 Summary: Oferta dotyczy rozwoju i utrzymania systemów teleinformatycznych poprzez tworzenie nowych funkcjonalności, aplikacji oraz zabezpieczeń. Kandydat będzie rozwijać skrypty i aplikacje w Pythonie oraz C++, wspierać administratorów i analizować rozwiązania pod kątem bezpieczeństwa. Praca stacjonarna w Warszawie z możliwością rozwoju poprzez szkolenia i certyfikacje. 🗂️ Requirements: Minimum 3 lata doświadczenia w programowaniu Python i C++, Znajomość Python, Znajomość C++, Podstawowa wiedza z zakresu sieci komputerowych, Umiejętność tworzenia aplikacji webowych, Znajomość języka angielskiego na poziomie B2, Umiejętność pracy zespołowej, Samodyscyplina, Chęć rozwoju kompetencji 📃 Skills: Python, C++, Web, Networking, English 🏢 Description: Szukamy programistów, którzy wniosą swoje umiejętności do zespołu tworzącego systemy teleinformatyczne. Twoja wiedza zostanie przełożona na rozwijanie systemów o nowe funkcjonalności i zabezpieczenia. Dołącz do naszego zespołu! OCZEKUJEMY: Tworzenia oraz poprawy skryptów oraz aplikacji w językach python i C++, Wsparcia administratorów w rozwiązywaniu problemów, Udziału w przedsięwzięciach tworzenia systemów, Analizy obecnie używanych rozwiązań pod kątem bezpieczeństwa i rozwoju funkcjonalności. WYMAGAMY: Minimum 3-letniego doświadczenia w programowaniu w językach python i C++, Wykształcenia: mile widziane wykształcenie techniczne, Umiejętności sieciowych: podstawowa wiedza na temat działania sieci, Umiejętności technicznych: programowanie python, C++, tworzenie aplikacji webowych, Znajomości języka angielskiego na poziomie B2, Umiejętności miękkich: samodyscyplina, chęć rozwoju własnych kompetencji, umiejętność pracy w zespole OFERUJEMY: Możliwość uzyskania świadczenia teleinformatycznego w przypadku realizacji zadań wyszczególnionych w rozporządzeniu Rady Ministrów z dnia 19 stycznia 2022 r. w sprawie wysokości świadczenia teleinformatycznego dla osób realizujących zadania z zakresu cyberbezpieczeństwa, Rozwój poprzez szkolenia i certyfikacje, udział w konferencjach Szkolenia wewnętrzne Przestrzeń do eksperymentowania z nowymi rozwiązaniami Stabilne warunki zatrudnienia, Elastyczne godziny pracy, Możliwość doskonalenia kompetencji językowych, Dofinansowanie karnetów sportowych, Opiekę medyczną, Miejsca parkingowe, Wewnętrzną siłownię i bufet. Siedziba naszej instytucji znajduje się w Warszawie (brak możliwości pracy zdalnej). Zastrzegamy sobie prawo do kontaktu z wybranymi kandydatami.

🏢 Summary: Senior systems programming role focused on building and optimizing distributed systems using C++ and Linux, with technologies such as Kubernetes and Apache Kafka. The position involves large-scale, high-performance infrastructure work with opportunities to work on storage, networking, and low-latency architectures. 🗂️ Requirements: 8+ years of C++ systems programming experience, Linux systems programming, Kernel knowledge, Experience with Kubernetes, Experience with Apache Kafka, Understanding of distributed systems 📃 Skills: C++, Linux, Kernel, Kubernetes, Kafka, Filesystems, DistributedSystems, NvME, Networking, Multithreading, Performance, Databases, Replication, Consistency 🏢 Description: Required expertise: 8+ years C++ Linux systems programming, Kernel knowledge experience with Kubernetes and Apache Kafka Filesystems Thorough understanding of Distributed Systems Nice to have: NvME Storage High-performance networking Multithreaded systems operating at large scale Performance optimization Database engines Low-latency data paths Replication and consistency architectures What can we offer: Flexible form of employment An interesting, challenging job in the dynamically developing Capital Group company Direct impact on shaping the image of the Capital Group’s companies on the market Possibility to develop competences in a wide range Attractive salary Friendly work atmosphere and stability of employment Benefits, among others integration meetings, internal company competitions, language classes and much more.

🏢 Summary: Senior C# Developer role focused on building and evolving core backend systems for XVA, Liquidity, and Financial Resource Management within a global financial project. The position involves developing scalable, event-driven solutions in a distributed agile team and supporting high-impact financial tools used in fast-moving markets. The role also contributes to migrating legacy systems to a modern event-driven architecture. 🗂️ Requirements: Strong experience with C# and .NET ecosystem, Experience with ASP.NET Web API, Knowledge of event-driven architecture, Experience with asynchronous messaging, Strong understanding of OOP and design patterns, Experience with service-oriented architectures, Strong knowledge of MS SQL, Experience with DevOps tools in enterprise environments, Practical knowledge of LLM and agentic AI engineering, Familiarity with at least two financial domains: Listed/OTC products, PnL, XVA, Liquidity risk, Cash forecasting, Balance sheet metrics 📃 Skills: C#, .NET, ASP.NET, WebAPI, Rebus, SignalR, Windows, MS SQL, Dapper, GIT, Bitbucket, TeamCity, Jenkins, Ansible, OOP, SOA, LLM, AI, XVA 🏢 Description: Are you an experienced C# Developer ready to join a cutting-edge global financial project? We are partnering with a leading international financial institution seeking a Senior C# Developer to join their distributed, agile team focused on building and evolving core systems for XVA, Liquidity, and Financial Resource Management. What you9ll do: Develop and maintain core backend systems using C# .NET, ASP.NET Web API, and event-driven architecture Work with asynchronous messaging (Rebus) to build scalable, reliable solutions Collaborate with an international team committed to clean code and software craftsmanship Influence the migration to a modern event-driven backend architecture Support high-impact financial tools used daily by hundreds of users in fast-moving markets Tech stack: C# .NET, Windows Services, ASP.NET Web API, SignalR MS SQL, Dapper ORM DevOps tools: GIT (Bitbucket), TeamCity, Jenkins, Ansible Event-driven messaging with Rebus What we9re looking for: Strong expertise in OOP, design patterns, and .NET ecosystem Deep understanding of service-oriented architectures and MS SQL Experience with DevOps in enterprise environments Practical knowledge of LLM capabilities and agentic AI engineering within software development Familiarity with financial products and risk management (at least 2 of): Listed/OTC products, PnL explain & risks, XVA models, Liquidity risk, Cash forecasting, or Balance sheet metrics Bonus points: Front-end experience with HTML, JavaScript/TypeScript, React, Redux Personal qualities: Highly autonomous and excels in teamwork Great communication, analytical thinking, and organisational skills Detail-oriented, even under tight deadlines Proactive and flexible in facing daily engineering challenges Motivated to work closely with front-office IT teams Integrity and role-model attitude fostering a positive work culture

🏢 Summary: The offer is for an experienced C++ Developer to build and maintain network and cloud applications in the healthcare domain. The role involves image processing, streaming, and optimization of existing code within distributed systems. Work includes implementing new features and ensuring high-quality software in a collaborative team environment. 🗂️ Requirements: Commercial experience in C++ programming, Knowledge of relational databases, Knowledge of object-oriented databases, Understanding of HTTP protocol, Understanding of TCP/IP fundamentals, Experience with distributed systems, Experience with static code analysis 📃 Skills: C++, SQL, HTTP, TCP/IP, DistributedSystems, StaticAnalysis, ImageProcessing, Streaming, Cloud 🏢 Description: Miejsce pracy: ul. Ceglana 35, 40-514 Katowice Jesteśmy dynamicznie rozwijającą się firmą technologiczną, która specjalizuje się w tworzeniu zaawansowanych rozwiązań w obszarze aplikacji sieciowych i chmurowych. W związku z rozwojem naszych projektów poszukujemy doświadczonego Developera C++, który dołączy do naszego zespołu. Nasze projekty skoncentrowane są na obszarze Healthcare. Obowiązki : Programowanie aplikacji sieciowych oraz aplikacji chmurowych. Przetwarzanie obrazu i strumieniowe w różnorodnych projektach. Wdrażanie nowych funkcjonalności oraz utrzymanie i optymalizacja istniejącego kodu. Współpraca w ramach zespołu projektowego w celu zapewnienia wysokiej jakości oprogramowania. Wymagania : Doświadczenie w programowaniu w C++. Znajomość baz danych relacyjnych i obiektowych. Dobra znajomość protokołu HTTP i podstaw sieci TCP/IP. Doświadczenie z systemami rozproszonymi mile widziane . Mile widziane doświadczenie ze statyczną analizą kodu. Dodatkowym atutem będzie doświadczenie w tworzeniu aplikacji mobilnych. Oferujemy : Stabilne zatrudnienie w nowoczesnym środowisku pracy Możliwość rozwoju zawodowego i zdobycia doświadczenia w projektach różnego rodzaju Core hours 9:00-15:00 Możliwość zdalnego świadczenia usług, jednak chętnie zobaczymy Cię w biurze 😉 Wynagrodzenie adekwatne do umiejętności i doświadczenia Jak rekrutujemy? Chcemy mieć pewność, że wszyscy kandydaci mają równe szanse, dlatego korzystamy z testu TestGorilla. Chcesz dołączyć do naszego zespołu? Zacznij od kliknięcia w poniższy link. https://app.testgorilla.com/s/9naqdw58 W tym momencie kończymy pierwszy etap rekrutacji. Drugi etap to podsumowująca test techniczna rozmowa online/stacjonarnie trwająca około 1h. Etap trzeci to spotkanie w biurze/online składające się ze swobodnej rozmowy i części negocjacyjnej, gdy już wiemy, że chcemy współpracować.

🏢 Summary: Remote C# Developer role focused on low-level development, hardware integration, and firmware communication for AI-driven investment technology solutions. The position involves building machine-oriented software systems in a distributed Agile environment with CI/CD practices. Candidates will collaborate on performance, reliability, and embedded system integration projects. 🗂️ Requirements: Minimum 5 years of experience with C#, Experience with low-level development, Experience with hardware interaction, Knowledge of firmware interfacing, Knowledge of control layer communication, Experience with Agile methodologies, Experience with CI/CD processes, Experience with GitHub or GitLab, English proficiency at B2 level 📃 Skills: C#, Firmware, CI/CD, GitHub, GitLab, Agile, SAFe 🏢 Description: We are looking for an experienced C# Developer with a strong background in low-level development and hardware integration to join Sii and contribute to an innovative project delivered for our client — an international company operating in the AI-driven investment technology domain. You’ll work in a fully remote, startup-like environment, building solutions that combine software engineering with machine-level interaction and firmware communication. This is a great opportunity to grow within distributed teams and modern engineering practices, including CI/CD and Agile delivery models. At Sii, we support continuous development and offer access to diverse projects aligned with your expertise. If you like getting close to the hardware, enjoy solving complex integration challenges, and want to see how your code interacts with real-world systems — this project is for you. Apply now and build solutions where software meets machines. Not a 100% match? Let’s talk anyway — we’ll match you with the right opportunity. Your tasks Develop and maintain C# applications interacting with hardware components and low-level systems Design and implement interfaces for communication with machine control layers and embedded components Integrate software solutions with firmware and ensure reliable data exchange between layers Collaborate with cross-functional, distributed teams in an Agile environment using CI/CD pipelines Participate in code reviews, testing, and continuous improvement of system performance and reliability Requirements Minimum 5 years of experience as a C# Developer or in a similar role Hands-on experience with low-level or machine-oriented development and hardware interaction Strong knowledge of firmware interfacing and control layer communication Practical experience with Agile methodologies and CI/CD processes (GitHub/GitLab) English proficiency at min. B2 level (comfortable working in an international environment) Nice-to-have requirements Experience working in a SAFe environment