Functional Developer

🏢 Summary: Opportunity for a Quantitative Developer to build and optimize scalable research, analytics, and trading platforms handling large-scale real-time and historical market data. The role focuses on high-performance software development, data pipeline design, and low-latency system optimization in production environments. You will develop robust applications supporting quantitative strategy development and simulation workflows. 🗂️ Requirements: Degree in Computer Science, Engineering, Mathematics, Physics, or related field, Professional experience building and operating production software systems, Strong programming skills in Python, Strong programming skills in modern C++, Experience with SQL databases, Experience working in Linux environments, Experience with distributed systems, Knowledge of performance profiling, debugging, and optimization, Understanding of financial markets and quantitative data processing 📃 Skills: Python, C++, SQL, Linux, DistributedSystems, Profiling, Debugging, Optimization, MarketData, DataPipelines 🏢 Description: Quantitative Developer We are seeking an experienced engineer to design and develop scalable platforms supporting quantitative research, analytics, and trading workflows. The role combines software engineering, data processing, and performance optimization in environments handling large-scale real-time and historical datasets. Responsibilities: Develop and maintain research and analytics platforms used for strategy development and simulation. Build high-performance applications and libraries in Python and C++. Design scalable data pipelines and storage solutions for market data processing. Improve system reliability, automation, monitoring, and deployment processes. Optimize application and infrastructure performance for low-latency and high-throughput workloads. Collaborate closely with technical and business stakeholders to deliver production-ready solutions. Support engineering best practices and mentor junior team members. Requirements: Degree in Computer Science, Engineering, Mathematics, Physics, or a related field. Professional experience building and operating production software systems. Strong programming skills in Python and modern C++. Experience with SQL databases, Linux environments, and distributed systems. Knowledge of performance profiling, debugging, and optimization techniques. Understanding of financial markets and quantitative data processing. Strong analytical and communication skills. Nice to have: Experience with backtesting, pricing, or simulation frameworks. Familiarity with real-time market data systems. Exposure to cloud infrastructure and scalable compute environments. Background in quantitative finance, systematic trading, or financial engineering.

🏢 Summary: Hands-on Quantitative Software Engineer role focused on building and optimizing a high-performance research-to-trading platform for quantitative investment strategies. The position involves developing analytics, pricing libraries, and production trading systems using C++ and Python, with direct collaboration with researchers and investment professionals. Emphasis is placed on scalable data pipelines, performance tuning, and reliable production infrastructure. 🗂️ Requirements: Degree in Computer Science, Engineering, Mathematics, Physics, or related quantitative field, 3+ years of software engineering experience in production environments, Strong programming skills in Python, Strong programming skills in modern C++, Experience with SQL and relational databases, Experience with Linux development, Experience building, deploying, and supporting production systems, Strong performance tuning, debugging, and optimization skills, Understanding of financial markets (equities, futures, FX) and market data usage, Strong analytical and problem-solving skills 📃 Skills: Python, C++, SQL, Linux, CMake, Git 🏢 Description: Quantitative Software Engineer Warsaw, hybrid. Join a team building a research-to-trading platform used to design, test, and deploy quantitative investment strategies. This is a hands-on engineering role focused on high-performance analytics, market data, and production trading infrastructure . Responsibilities Develop and maintain C++ and Python applications supporting quantitative research and trading. Build analytics, pricing libraries, and tools for backtesting, simulation, and production trading. Design and optimize data pipelines handling large historical and real-time market datasets. Develop and support production services, including testing, deployment, and monitoring. Improve platform scalability, reliability, and performance. Partner directly with researchers and investment professionals to deliver robust, production-grade solutions. Contribute to technical roadmap, automation, and engineering best practices. Requirements Degree in Computer Science, Engineering, Mathematics, Physics, or a related quantitative field. 3+ years of software engineering experience in production environments. Strong programming skills in Python and modern C++ . Experience with SQL, relational databases, and Linux development . Experience building, deploying, and supporting production systems. Strong performance tuning, debugging, and optimization skills. Understanding of financial markets (equities, futures, FX) and market data usage. Strong analytical, problem-solving, and communication skills. Nice to Have Experience working directly with quantitative research or trading teams. Background in low-latency or high-throughput systems. Experience with large-scale data processing and analytics platforms.

🏢 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: Opportunity to develop and optimize high-performance software systems for the financial sector using C/C++. The role covers full software development lifecycle, feature implementation, system integration, and performance optimization of production systems. It focuses on building stable, maintainable, and performance-critical applications. 🗂️ Requirements: 5+ years professional software engineering experience, Strong proficiency in C, Strong proficiency in C++, Experience with Visual Studio, Experience with Git or SVN, Knowledge of relational databases, Knowledge of transactional databases, German language skills minimum B2 level 📃 Skills: C, C++, VisualStudio, Git, SVN, SQL, RelationalDatabases, TransactionalDatabases 🏢 Description: Join our team developing high-performance software systems for the financial sector. Your Responsibilities: Design and implement new features using C / C++. Integrate new components into the existing software architecture. Contribute to the full software development lifecycle. Ensure code quality, stability, and maintainability. Support and optimize performance-critical systems in production. Your Profile: 5+ years of professional software engineering experience. Strong proficiency in C / C++. Experience with Visual Studio and version control (Git/SVN). Knowledge of relational and transactional databases. German language skills (minimum B2 level).

🏢 Summary: Opportunity for an experienced Java Developer to build and optimize high-performance financial systems, including trading platforms, risk management tools, and real-time market data solutions. The role focuses on developing scalable, mission-critical applications using modern Java and enterprise technologies. You will contribute to robust, low-latency systems in a fast-paced capital markets environment. 🗂️ Requirements: 5+ years of Java development experience (Java 8+), Strong experience with Spring Framework, Experience with relational and NoSQL databases (Oracle, PostgreSQL, MongoDB), SQL optimisation and database performance tuning skills, Experience with Maven or Gradle, Proficiency with Git, Experience designing and implementing RESTful APIs, Experience with messaging systems (JMS, RabbitMQ, Kafka) 📃 Skills: Java, Spring, Oracle, PostgreSQL, MongoDB, SQL, Maven, Gradle, Git, REST, JMS, RabbitMQ, Kafka 🏢 Description: About the Role We're seeking an experienced Java Developer to contribute to innovative financial technology solutions that drive the global capital markets. You'll be part of a collaborative team developing mission-critical systems including high-performance trading platforms, sophisticated risk management tools, regulatory compliance frameworks, and real-time market data processing engines trusted by top-tier financial institutions worldwide. What You'll Do Design and develop robust, scalable financial applications using modern Java technologies Build and optimise high-throughput trading systems and market data processing solutions Collaborate with cross-functional teams to deliver risk management and compliance platforms Implement RESTful services and integrate messaging systems for real-time data flow Optimise database performance and ensure system reliability in fast-paced trading environments Required Qualifications 5+ years of hands-on Java development experience with modern versions (Java 8 and above) Strong expertise in Spring Framework and enterprise application development Proven experience with relational and NoSQL databases including Oracle, PostgreSQL, and MongoDB Demonstrated skills in SQL optimisation and database performance tuning Proficiency with build automation tools ( Maven, Gradle ) Experience with Git version control and collaborative development workflows Solid understanding of RESTful API design and implementation Knowledge of enterprise messaging systems ( JMS, RabbitMQ, Kafka ) Be happy to work in a hybrid model - 3 days per week in the office in Central Krakow

🏢 Summary: Software Engineer role focused on building and optimizing low-latency, high-performance trading infrastructure for global markets using low-level programming and data-driven methods. The position involves developing and maintaining high-throughput systems, exchange connectivity, and large-scale data processing with a strong emphasis on performance and precision. 🗂️ Requirements: Excellent C/C++ programming skills, Hands-on experience with large C/C++ projects, Strong knowledge of TCP and UDP networking, Low-level networking expertise, Deep understanding of algorithms and complexity, Strong knowledge of statistics and algebra, Master’s degree in Computer Science, Electrical/Computer Engineering or related field, Experience with Python or shell scripting, Active GitHub account or proven coding portfolio 📃 Skills: C, C++, Python, Shell, TCP, UDP, Networking, Algorithms, Statistics, Algebra, GitHub, Cloud 🏢 Description: Description About Us For over five years, we've been at the forefront of crypto trading, building the software that outpaces the market. We seek talent in Mathematics, Physics, and Computer Science to apply rigorous scientific and data-driven methods to financial markets. We continuously strive for perfection in every aspect of our research and engineering culture, where the better argument always wins over hierarchy. Our ambition goes far beyond cryptocurrency trading: we are here to dominate global markets, and we are here to win What you will do We're looking for a Software Engineer who lives and breathes low-level programming and high-performance computing. You will work alongside researchers and engineers to build, improve, and maintain our low-latency, high-throughput trading infrastructure. From collecting quotes and trades from exchanges around the world in the most efficient way possible to tackling big-data challenges at scale, this role demands someone who is obsessed with performance, precision, and squeezing out every last microsecond. Location: Zug, Switzerland | Relocation support provided Requirements Creativity, self-motivation, drive to perfection to solve challenging problems down to the nanosecond range Excellent C/C++ design and programming skills Must prove hands-on experiences working on big projects in C/C++ in a dynamic environment Demonstration of active GitHub account (or similar proof) Strong understanding of networking concepts (TCP, UDP, etc.) with low level networking knowledge preferred Deep knowledge of algorithms, complexity, statistics and algebra At least Master's Degree in Electrical/Computer Engineering, Computer Science, or a related area Solid experience with scripting languages (Python, shell scripting, etc.) Familiarity with cloud computing infrastructure (a plus) Benefits Work where scientific thinking and engineering excellence drive decisions A culture focused on continuous improvement and performance at the highest level Highly collaborative environment where good ideas win over hierarchy Direct impact on low-latency trading infrastructure and global exchange connectivity Join an ambitious team building a platform designed to grow beyond cryptocurrency trading

🏢 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: Senior Software Developer role focused on developing and maintaining a high-performance electronic trading platform, with responsibility for backend Core Java components and Level 3 production support. The position involves implementing new features, writing automated tests, and collaborating closely with trading teams to enhance platform design and performance. 🗂️ Requirements: 10+ years of Core Java development experience, Experience with trading platforms or real-time systems, Experience writing automated functional and performance tests using Cucumber, Ability to provide Level 3 production support on rotational schedule, Degree in Computer Science or Java certification 📃 Skills: Java, Spring, Cucumber, Solace, Oracle, REST, ION, ADO 🏢 Description: About the Role: We are looking for a Senior Software Developer to join a growing team focused on enhancing and maintaining a high -performance electronic trading platform. You will work on backend components, implement new features, and provide Level 3 production support on a rotational basis. The role offers direct collaboration with trading teams and opportunities to influence platform design and improvements. Responsibilities: Analyze, design, develop, and document Core Java server-side components Write automated functional and performance tests using Cucumber Provide L3 production support in a rotational schedule (mostly aligned with London business hours) Collaborate with a global team and trading stakeholders Must Have: 10+ years of experience with Core Java development Experience working on trading platforms or similar real-time systems Java certification preferred or a degree in Computer Science Strong communication skills and ability to work with business stakeholders Experience writing automated functional and performance tests with Cucumber Nice to Have: Knowledge of ION MarketView Java API Understanding of Fixed Income trading (Dealer-to-Client eTrading of Bonds) Experience with Spring Boot Familiarity with ADO pipelines for build and deployment Experience with REST APIs Technology Stack: Backend: Core Java, Spring Boot Messaging: Solace Database: Oracle

🏢 Summary: Senior Java Engineer role focused on building and rewriting a low‑latency FX & Commodities Risk platform for a global investment bank. The position involves developing high‑performance, distributed backend systems supporting real‑time risk calculations across trading desks. This is a backend‑heavy role centered on multithreading, event streaming, and scalable data processing in a financial environment. 🗂️ Requirements: Financial services experience (FX Risk or trading systems), Strong Core Java expertise, Experience with Spring or Spring Boot, Knowledge of multithreading and concurrency, Experience building low-latency systems, Experience with distributed systems, Hands-on experience with Kafka or similar messaging systems, Experience with Hazelcast or distributed caching solutions, Experience with modern data stores (e.g., ClickHouse), Ability to work with complex legacy systems, Backend development experience in high-performance environments 📃 Skills: Java, CoreJava, Spring, SpringBoot, Kafka, Hazelcast, ClickHouse, Multithreading, Concurrency, LowLatency, DistributedSystems, JVM, WPF, C#, Haskell 🏢 Description: ** CANDIDATES MUST HAVE FINANCIAL EXPERIENCE ** Java Engineer – FX & Commodities Risk Platform Global Investment Bank | Low‑Latency Systems | B2B | Remote | Rate: 2100PLN + | Must have Financial Experience A global investment bank is expanding its FX & Commodities Risk engineering team and is hiring a Senior Java Engineer in Poland to help build a next‑generation risk platform used by trading desks in London, Singapore, and New York. This is a rare opportunity to work on a brand‑new system rewrite while learning from a complex, high‑performance legacy platform that has powered global trading for years. What We’re Looking For Strong experience with Core Java and Spring Solid understanding of multithreading, concurrency, and low‑latency systems Experience with Kafka, Hazelcast, or similar distributed technologies Familiarity with modern data stores (ClickHouse is a plus) Ability to learn from and navigate complex legacy systems Proactive mindset — someone who can drive development forward Strong communication and collaboration skills FX Risk or broader trading‑systems experience is a strong plus About the Platform The FX & Commodities Risk Platform provides real‑time risk calculations and reporting across multiple asset classes. The current system includes: Frontend: WPF (C#) Backend: Java (Core Java, Spring) Quant Library: In‑house, with Haskell used for interaction A full rewrite is underway, moving the platform to a modern, scalable architecture. What You’ll Work On You’ll play a key role in building the new platform, which is moving towards: Spring Boot Kafka for event streaming Hazelcast for distributed caching and computing ClickHouse for high‑performance data storage and reporting Key Engineering Focus Areas High‑performance multithreading & concurrency Low‑latency backend development Distributed systems using Kafka and Hazelcast Data‑intensive workloads using ClickHouse Interacting with the quant library (light Haskell exposure) Learning from the legacy system’s memory‑optimised design (critical for JVM stability) This is a backend‑heavy role with deep engineering challenges.

🏢 Summary: Lead Software Engineer role in a hybrid model, combining hands-on development and team leadership to build next-generation Middle and Back-office financial systems. The position focuses on architecting and delivering scalable, cloud-native platforms supporting global trading and portfolio operations. The role includes direct people management and close collaboration with finance and portfolio stakeholders. 🗂️ Requirements: 10+ years of commercial software development experience, 2+ years of formal engineering team leadership experience, Strong expertise in C# or strong OOP background, Experience designing and building cloud-native applications, Experience with enterprise messaging systems, Experience with distributed architectures, Experience with large-scale data processing, Experience with modern databases such as Snowflake, Ability to manage large-scale technical projects, Degree in Computer Science, Mathematics, Engineering or related field 📃 Skills: C#, OOP, Cloud, Messaging, Distributed, Snowflake, SQL, Databases, DevOps, Architecture, Data 🏢 Description: Hybrid model: 3 days/week in the office For our client, a top-tier global quantitative investment firm expanding its Warsaw technology hub, we are looking for a Lead Software Engineer. The company is currently engaged in a multi-year strategic initiative to build next-generation Middle and Back-office systems that support their global trading operations, portfolio management, and overall firm growth. This is a strict Player-Coach role (60-70% hands-on coding & architecture / 30-40% management) . You will be actively building software while directly managing a compact team of 4 to 6 engineers. You will also take ownership of stakeholder management, gathering requirements directly from global finance, tax, and portfolio management teams. What you will do: Code & Architect (60-70%): Lead the end-to-end design, architecture, and delivery of highly scalable financial technology platforms. Lead & Mentor (30-40%): Manage a team of 4-6 developers, conduct 1:1s, performance reviews, and guide their career development. Drive the adoption of engineering best practices across code quality, cloud-native architecture, and DevOps. Ensure platforms are highly reliable, recoverable, and scalable to support increasing daily data volumes and analytics requirements. Collaborate directly with global product and engineering teams to translate complex business needs into technical implementations. Requirements: 10+ years of commercial software development experience. 2+ years of formal experience leading engineering teams (people management) and driving large-scale projects. Deep engineering expertise in C# (or strong OOP background with a willingness to transition). Proven track record of designing and building cloud-native applications. Experience with enterprise messaging systems and distributed architectures. Strong experience with large-scale data processing and modern databases (e.g., Snowflake). Exceptional communication skills with the ability to manage expectations of senior, non-technical stakeholders. Degree in Computer Science, Mathematics, Engineering, or a closely related field. Nice to have: Prior experience in the financial services industry, ideally within asset management, hedge funds, or trading firms. Domain knowledge of Middle/Back-office operations. Familiarity with financial accounting systems (e.g., Advent Geneva).