Java Developer for Front Office and Trading Systems

Front Office IT Support Engineer – Trading & Electronic Trading SystemsJoin MARGO in the UK (London)MARGO is a technology-driven consultancy that provides high-value IT expertise to the financial services sector.We thrive in complex Front Office environments where technology, trading activity, and operational constraints converge. Our team supports and manages mission-critical trading systems utilized by Front Office, trading, and risk teams, ensuring responsiveness, reliability, and a deep technical understanding.Being part of MARGO means engaging in challenging Front Office environments while enjoying a close-knit structure, personalized support, and customized training pathways.Business ContextIn this role, you will be integral to Front Office IT Support and Trading Technology, providing support for live trading operations across various asset classes.Our systems are production-critical, operate in real-time, and demand a strong emphasis on stability, performance, and incident management. You will collaborate closely with traders, sales, risk, development, and infrastructure teams.Role OverviewWe are seeking a Front Office IT Support Engineer to oversee, enhance, and maintain trading and electronic trading systems.This position extends beyond mere reactive support; it requires proactive ownership of Front Office platforms, involvement in change initiatives, and hands-on troubleshooting of production issues in real-time settings.Ideal candidates will have a strong passion for trading systems, production environments, and a desire for progressive technical challenges.Key ResponsibilitiesProduction Support & Operations· Deliver Front Office IT support in live trading environments.· Ensure the availability, stability, and performance of trading systems during market hours.· Collaborate with various teams to identify and resolve issues efficiently.

Job Title: Python Developer – Front Office R&D Trading SystemsLocation: London, UKEmployment Type: Permanent or ContractAbout MARGOMARGO is a cutting-edge consultancy providing invaluable IT expertise to the financial services sector. We excel in complex Front Office environments where software engineering, quantitative analysis, and production stability converge. Our specialists collaborate closely with trading and research teams to enhance real-time trading platforms, pricing models, and analytical systems.The RoleAs a key member of our Front Office R&D and Trading Technology team, you will be responsible for designing, maintaining, and evolving the ecosystem utilized by traders and quantitative analysts. This role involves 70% Development & Engineering and 30% Production Support, allowing you significant ownership over the platform.The environment is dynamic and characterized by rapid iterations, direct trader interaction, and stringent reliability standards. You will primarily work with Python to develop essential frameworks, analytical libraries, and monitoring tools.Key ResponsibilitiesDevelopment & Engineering (Approx. 70%)- Design, develop, and maintain core libraries and frameworks in Python.- Collaborate with traders and research teams to gather requirements for new analytical and trading tools.- Enhance the performance, scalability, and maintainability of the Python platform.- Upgrade existing monitoring, analysis, and control tools to support research workflows.Support & Production (Approx. 30%)- Provide L1/L2 support to Front Office users to ensure system stability during market hours.- Investigate and resolve production incidents promptly.- Develop tools to enhance system reliability and operational efficiency.- Contribute to the evolution of performance-sensitive, low-latency setups.RequirementsEssential Skills:Strong Python Proficiency: Deep expertise in core Python development and performance-oriented coding.Linux/UNIX: Robust knowledge of Linux environments for production and debugging.Database Skills: Proficiency with SQL and relational databases.Production Experience: Capacity to perform under pressure and strong troubleshooting and analytical abilities.Communication: Clear communication with a structured approach to problem-solving.Valued (but not mandatory):Experience in Front Office R&D or Electronic Trading environments.

Fasanara Digital, established seven years ago, is the dedicated cryptocurrency division of Fasanara Capital, a boutique alternative asset manager with a 14-year history. As a quantitative investment fund, we employ a scientific approach to investing in crypto assets, aiming for outstanding risk-adjusted returns. Our diverse and sophisticated investment strategies capitalize on market inefficiencies, spanning from market making to cross-exchange arbitrage.Our CultureWe foster a meritocratic environment where individuals are recognized and rewarded based on their impact and excellence. Unlike large organizations, our atmosphere is collaborative and entrepreneurial, built on a foundation of trust. We set ambitious goals, work diligently, emphasize teamwork, and uphold the highest standards in all our endeavors. Our success relies on our team, and we are committed to assembling a firm with exceptional talent.Position Overview:As a Senior Front Office Developer specializing in high-frequency trading for cryptocurrencies, you will be pivotal in designing, implementing, and optimizing trading algorithms and infrastructure. Your expertise in software development, mathematics, and low-latency systems will enhance our trading platform and facilitate the execution of advanced trading strategies in the digital asset markets. You'll collaborate closely with our quant and trading team to turn innovative ideas into actionable solutions.Key Responsibilities:Design, develop, and maintain high-performance trading algorithms and infrastructure using Java, ensuring optimal speed, efficiency, and reliability within a high-frequency, cloud-deployed trading environment.Work in tandem with quantitative researchers and traders to convert trading strategies into scalable and robust software solutions, implementing complex mathematical models and optimization techniques.Enhance performance by optimizing memory usage and resource allocation within trading system components, employing advanced methods such as memory pooling, off-heap buffering, and cache optimization.Conduct comprehensive testing and validation of trading algorithms in both simulated and live trading environments, analyzing performance metrics and making real-time adjustments to enhance trading strategies.Stay abreast of industry trends, technological advancements, and regulatory changes within the cryptocurrency and high-frequency trading sectors, continuously improving our trading platform and competitive positioning.

C# / .NET Developer for Front Office Electronic Trading SystemsJoin MARGO in the UK (London) – Permanent and Contracting OpportunitiesMARGO is a technology-driven consultancy that provides exceptional IT expertise to the financial services sector.We specialize in intricate software engineering environments where performance, reliability, and scalability are paramount: including real-time systems, low-latency architectures, distributed computing, and high-throughput data processing.By joining MARGO, you'll be immersed in challenging Front Office and Trading IT environments while enjoying a close-knit structure with personalized support and tailored training programs.Business ContextYou will be an integral part of the Front Office/Trading IT environment of one of our tier-1 investment banking or trading partners.The teams are responsible for designing and maintaining mission-critical C# / .NET systems that support electronic trading, real-time risk, and analytics platforms across various asset classes including Equities, Fixed Income, Commodities, Foreign Exchange, and Derivatives.These systems run in close proximity to trading desks and electronic trading platforms, adhering to stringent performance, reliability, and production stability standards.The working environment is characterized by:· Real-time and event-driven architectures· Low-latency and high-throughput processing demands· Strong production stability and reliability constraints· Close collaboration with trading, quantitative, and risk management teams· High engineering standards and rapid delivery cycles

Join Our Team at WintermuteAs a leading technology unicorn and one of the foremost algorithmic trading firms in the digital assets space, Wintermute is at the forefront of cryptocurrency liquidity provision across major trading platforms. We specialize in offering a wide array of OTC trading solutions and are committed to advancing high-profile blockchain initiatives alongside traditional financial institutions transitioning into the crypto ecosystem. Additionally, our Wintermute Ventures division invests in pioneering DeFi projects.Since our inception in 2017, Wintermute has adeptly navigated the ever-changing landscape of the cryptocurrency market. We pride ourselves on blending the rigorous technology standards of high-frequency trading firms with the dynamic and innovative culture characteristic of technology startups. Our vision is rooted in the transformative potential of blockchain, and we are dedicated to shaping a compliant and progressive market for digital assets. Discover more about us here.Position OverviewWe are looking for a skilled C++ Developer to join our expanding options trading team—one of the largest electronic trading desks within the crypto options market. In this pivotal role, you will work closely with our traders to develop high-performance, scalable options trading systems. Your engagement will span the full options stack, promoting business growth across centralized finance, decentralized finance, and OTC. The ideal candidate will demonstrate strong problem-solving abilities and thrive in a fast-paced environment.

The Vice President of Trading Systems Development at Galaxy Digital Services will lead the architecture and development of high-performance trading systems in London. This role focuses on building and optimizing systems that handle market data ingestion, order routing, and execution, all while reducing latency and ensuring deterministic performance across critical trading workflows. Role overview This position sits at the intersection of software engineering and infrastructure. The main objectives are to minimize latency, maximize throughput, and deliver predictable performance for trading operations. The work directly supports the firm's institutional digital asset platform, which spans trading, investment banking, asset management, staking, self-custody, and tokenization technology. What you will do Design and develop low latency trading systems that process large volumes of market data and execute trades efficiently. Architect solutions for order routing and execution, focusing on high throughput and reliability. Collaborate with cross-functional teams to ensure trading infrastructure meets performance and scalability requirements. Requirements Experience building low latency trading systems. Background in high-performance messaging, especially in Java. Strong understanding of both software engineering and infrastructure as it relates to trading workflows. Our culture Galaxy values high performance, open feedback, and a mission-driven approach. The team brings together deep cryptocurrency expertise and institutional experience, working together to shape the future of Web3 and AI. The company encourages independent decision-making, transparent disagreement, and building exceptional teams. Strive for Excellence Selectivity for Effectiveness Highly Aligned, Loosely Coupled Transparent Disagreement Encourage Independent Decision-Making Build Exceptional Teams

About WintermuteWintermute is a pioneering technology firm and one of the largest algorithmic trading companies specializing in digital assets. We excel at providing liquidity across a multitude of cryptocurrency exchanges and trading platforms, offering a wide array of OTC trading solutions, while also bolstering high-profile blockchain initiatives and traditional financial institutions venturing into the crypto space. Additionally, Wintermute operates a ventures arm that invests in promising early-stage DeFi projects.Since our inception in 2017, Wintermute has adeptly navigated through various industry cycles. Culturally, we blend the technological excellence of high-frequency trading firms in traditional markets with the innovative spirit of technology startups. At Wintermute, we are committed to harnessing the transformative potential of blockchain technology. Our long-term vision focuses on the digital asset market, and we strive to play a leading role in establishing an innovative and compliant trading environment. You can learn more about us here.Join Our Team at WintermuteWe are on the lookout for a passionate C++ Trading Platform Developer who possesses a keen interest in both the intricate details of computer hardware and the overarching design of large-scale systems, including data infrastructure. Ideal candidates will have a natural curiosity to explore the inner workings of systems, a solid understanding of data structures, and experience in writing client-server network applications. Additionally, proficiency in writing and optimizing high-performance code is essential. We value both your commercial experience and personal projects that showcase your dedication to technology. A genuine interest in algorithmic and quantitative trading will be considered advantageous.At Wintermute, you will have the opportunity to grow your skills and make a direct impact on our trading activities by developing and enhancing various components of our trading platform, data infrastructure, and related software. You will receive mentorship and insights from seasoned developers and traders, including the founders of the company. Expect a high degree of independence and responsibility from the outset, with a learning curve that is second to none. We do not have legacy systems, excessive approvals, or bureaucracy; all developers report directly to the CTO, who is actively involved in day-to-day operations. Your contributions will be evaluated based on their impact rather than the hours you log.

Join Talan as a Front Office e-Trading Developer in London, where you will leverage your expertise to enhance and develop cutting-edge trading solutions. Collaborate with financial experts and utilize innovative technologies to optimize trading processes and improve operational efficiency.

About WintermuteWintermute is a pioneering technology firm and one of the foremost algorithmic trading companies specializing in digital assets. Our mission is to provide liquidity across a diverse range of cryptocurrency exchanges and trading platforms. We also offer comprehensive OTC trading solutions while supporting prominent blockchain initiatives and traditional financial institutions transitioning into the crypto space. Additionally, Wintermute Ventures invests in early-stage DeFi projects, further enhancing our influence in the industry.Founded in 2017, Wintermute has adeptly navigated through various industry cycles. We blend the high-frequency trading standards of traditional markets with the innovative spirit of technology startups. At Wintermute, we are committed to harnessing the disruptive potential of blockchain technology, maintaining a long-term perspective on the digital asset market, and leading the way in establishing a compliant and innovative trading environment. To learn more, please visit our website.Join Our TeamWe are on the lookout for a passionate C++ Quant Developer who thrives on technology and possesses a keen interest in both the intricate details of computer hardware and the overarching design of expansive systems, including data infrastructure. The ideal candidate enjoys exploring the inner workings of technology, has a solid understanding of data structures, and possesses experience in developing client-server network applications and optimizing high-performance code. We value prior experience from personal projects as well as professional backgrounds. A PhD in mathematics is common among our Quant Developers, and a solid grasp of mathematical concepts is essential. An interest in algorithmic and quantitative trading is a bonus.At Wintermute, you will have the unique opportunity to directly influence our trading activities by developing and enhancing various aspects of our trading platform, data infrastructure, and related software. You will receive guidance from seasoned developers and traders, including our founders. Expect immediate responsibility and independence, enabling you to learn at an unparalleled pace! We operate without legacy systems, bureaucratic hurdles, or multiple approval layers; all developers report directly to our hands-on CTO. The impact you make is truly up to you!

Join Our Team at WintermuteWintermute is a pioneering technology unicorn and a leading player in the algorithmic trading space, focusing on digital assets. We excel in providing liquidity across major cryptocurrency exchanges and trading platforms, deliver comprehensive OTC trading solutions, and actively support renowned blockchain projects as well as traditional financial institutions making their foray into the crypto realm. Additionally, our Wintermute Ventures division invests in promising early-stage DeFi projects.Founded in 2017, Wintermute has adeptly navigated the evolving landscape of the industry. Our culture merges the technology standards of high-frequency trading firms in traditional markets with the innovative spirit and entrepreneurial environment found in tech startups. We are passionate about the transformative power of blockchain and are committed to fostering a compliant and forward-thinking market in the digital asset space. For more insights, click here.Position OverviewWe are in search of a skilled Core Developer to join our dynamic development team. This role offers the opportunity to work within a focused, high-performing group that has a wide-reaching impact across various business sectors. The ideal candidate will be pragmatic, dedicated to producing clean and efficient code, and possess strong interpersonal skills, as collaboration with traders, C++ developers, quantitative researchers, and the DeFi Team is essential. While prior experience in crypto or finance is not a prerequisite, a solid technical foundation and the right mindset are crucial.Our primary services are developed in Python, though we also maintain high-performance infrastructures utilizing C++. We prioritize using the latest versions for both languages. Our systems operate on Linux, utilize PostgreSQL for database management, and incorporate several custom in-house solutions tailored to address challenges common in high-frequency trading.

C++ Developer – High Frequency Trading SystemsJoin MARGO in London – Exceptional Trading EnvironmentsAt MARGO, we are a technology-driven consultancy that provides premier software engineering services to the world's most demanding financial market environments.We specialize in latency-critical trading scenarios where performance, determinism, and predictability are paramount. Our consultants work in highly specialized trading environments, creating systems that communicate directly with exchanges and market venues under intense time constraints.Business ContextYou will be part of a High Frequency Trading / Low Latency Trading environment collaborating with one of our partners, which may include investment banks, proprietary trading firms, or market makers.Our teams design, build, and operate latency-sensitive trading systems that are directly connected to exchanges, typically deployed in colocated environments.These systems are known for:·Microsecond to sub-microsecond latency constraints·Deterministic and predictable execution paths·Minimal software and network overhead·Direct interaction with market data feeds and order gatewaysRole OverviewWe are seeking a C++ Software Engineer focused on developing latency-critical trading infrastructure.This position is primarily engineering-driven, emphasizing speed, predictability, and control of execution rather than just functional feature delivery.Depending on the environment, you may also interact with C# components utilized outside of the ultra-latency-critical execution path.Key ResponsibilitiesCore HFT EngineeringEngage in the design and enhancement of high-performance trading systems to meet stringent latency requirements.

Front-End Developer – React or Angular (Front Office & Risk Systems)Exciting Opportunities with MARGO in LondonMARGO is a leading tech-driven consultancy dedicated to delivering exceptional IT solutions to the financial services sector.We excel in intricate Front Office and Risk environments where user interfaces play a pivotal role in trading, risk management, and decision-making systems. Our expert consultants focus on crafting and developing high-performance, real-time, and sustainable UI platforms utilized daily by Front Office, Risk, and technology teams.By joining MARGO, you will tackle technically challenging UI platforms while collaborating closely with business users. You will thrive within a supportive structure that emphasizes strong engineering principles and personalized career advancement.Business ContextIn this role, you will be integral to the evolution of modern web-based user interfaces within Front Office and Risk technology environments.The platforms you will work on typically facilitate:· real-time trading and monitoring workflows· risk and P&L visualization· analytics and control dashboards· operational and decision-support toolsThis position demands a strong commitment to UI architecture, performance, and code quality, with close collaboration among backend, production, and business teams.Role OverviewWe seek a Front-End Developer with substantial expertise in either React or Angular to engage with intricate Front Office and Risk UI platforms.Candidates should be proficient in one of these frameworks; we require deep knowledge rather than a general familiarity.

Hudson River Trading seeks a Trading Systems Engineer to join the Trading Systems Infrastructure team. This group builds and maintains the technology behind global trading operations. Their work supports high performance and reliability for the ultra-low latency operating systems, automation tools, and development platforms that keep trading strategies running worldwide, around the clock. Role overview The Trading Systems Engineer will help support and improve real-time production trading environments. The work centers on solving challenges that require high availability, high throughput, and ultra-low latency. This role contributes to the development and automation of essential infrastructure components, working alongside a team committed to keeping trading systems operating smoothly at all times. What you will do Support and improve real-time production trading environments Address challenges involving high availability, high throughput, and ultra-low latency Contribute to developing and automating critical infrastructure Collaborate with a team focused on system reliability and uptime Requirements Experience with coding and automation Strong interest in enhancing technology stacks Ability to solve complex technical problems in demanding environments Comfort working where uptime and performance are essential Locations Austin, TX, United States Boulder, Colorado, United States Chicago, Illinois, United States London, United Kingdom New York, NY, United States Seattle, Washington, United States

Role Overview Talos Trading is hiring a TechOps Engineer - System Administrator in London. This position plays a key part in supporting and improving the technology that powers our trading operations. The work focuses on maintaining and optimizing systems so trading platforms run smoothly and efficiently.

Galaxy Digital Services is hiring a Vice President of Java Electronic Trading Engineering in London. This position centers on building advanced crypto trading systems for institutional clients. The team works at the intersection of finance and technology, supporting a platform that spans trading, investment banking, asset management, staking, and tokenization technologies. Role overview The London trading technology group is looking for experienced software engineers to help shape the next generation of digital asset trading infrastructure. The work involves designing and developing server-side Java systems that underpin electronic trading activities. What you will do Develop and maintain trading systems using server-side Java Work on components such as order management, market connectivity, low latency messaging, or price distribution Take ownership of technical challenges and drive them to resolution Requirements Strong experience in server-side Java development Background in one or more of: order management systems, market connectivity, low latency messaging, or price distribution Proven analytical and problem-solving skills Ability to work independently and follow issues through to completion Our culture and values Strive for excellence Be selective to ensure effectiveness Maintain high alignment with loose coupling Encourage transparent disagreements Foster independent decision-making Assemble dream teams Galaxy Digital Services values individuals who thrive in a mission-driven, high-performance environment and who are motivated to help shape the future of digital assets and finance.

Hudson River Trading is hiring a Junior Trading Systems Engineer to join its Trading Systems Infrastructure team. This group is responsible for designing, building, and maintaining the high-performance infrastructure that supports the firm's global trading operations. The focus is on ensuring reliability and efficiency for ultra low-latency operating systems, automation tools, and platforms that keep trading strategies running around the clock. Key responsibilities Contribute to projects within a real-time trading environment Address challenges that demand high availability, high throughput, and ultra low-latency solutions Support the maintenance and improvement of core infrastructure for global trading systems Assist in developing and automating tools that back trading operations What we look for Strong interest in coding and automation Willingness to learn new skills and technologies to work with a complex technical stack Ability to solve technical problems in a demanding setting Locations Chicago, Illinois, United States London, United Kingdom New York, NY, United States

Longshot Systems builds advanced platforms for sports betting analytics and trading. The team blends software engineering, machine learning, and expertise in sports markets to develop trading strategies for clients. Role overview The Sports Betting Trading Analyst joins the modeling team as a subject matter expert in sports and betting markets. This role works closely with software engineers and machine learning specialists to refine and improve trading strategies. Key responsibilities include monitoring client trading activity, analyzing historical trade data, and applying deep knowledge of the sports betting landscape to spot improvements and value leaks in both current and new strategies. What you will do Work with engineers and machine learning specialists to enhance trading strategies Analyze historical trades and client activity to identify areas for improvement Apply expertise in sports and betting markets to find value opportunities and leaks Use data analysis tools, especially Python and Jupyter notebooks, to extract insights Engage with a wide range of sports from a betting perspective Requirements Strong passion for sports and sports betting, ideally with experience as a professional bettor Deep understanding of betting exchanges, prediction markets, and sharp bookmakers, including US and Asian markets Proficiency with Jupyter notebooks and data analysis in Python Strong numerical skills and a solid background in statistics Interest in following a broad range of sports, especially through the lens of betting Working arrangements This position follows a hybrid working model. Thursdays require in-person attendance at the London (Farringdon) office, while the rest of the week offers flexibility. Core hours are 10 am to 6 pm UK time, Monday through Friday, with support for flexible working to help the team meet goals. The role often benefits from engagement during sporting events, and tools are available to review games outside regular hours. Interview process Introductory call (30 minutes) to discuss background and interests First technical interview (90 minutes) for an in-depth discussion of experience Comprehensive assessment day (10:00 am - 6:00 pm) on-site, focused on data analysis using Python to generate insights

At Jump Trading Group, we are dedicated to pioneering world-class research in the fields of Mathematics, Physics, and Computer Science. We empower extraordinary talents to explore scientific frontiers and apply avant-garde research to global financial markets. Our distinct culture fosters constant innovation, demanding creativity, intellectual honesty, and a fiercely competitive spirit. We believe in collective success and aim to unlock unique individual talents through collaboration and mutual respect. Research outcomes at Jump go beyond delivering superior risk-adjusted returns; we develop and deploy transformative technologies, support start-ups across diverse industries, and collaborate with leading global research organizations and academies to tackle pressing challenges. We are seeking a motivated Software Engineer to join one of our expanding quantitative trading teams. In this role, you will collaborate closely with traders and technologists to manage trading and operational challenges, ensuring the deployment process for the team’s production trading systems is scalable and fault-tolerant. Your responsibilities will include crafting and maintaining a sophisticated Python infrastructure, configuring production servers, and keeping all information sources for production processes current. The ideal candidate will possess a passion for development, a desire to learn about automated electronic trading, and the ability to tackle complex technical problems in a fast-paced and dynamic setting. This position promises exposure to a wide array of intriguing and challenging issues. The trading team views technology as an essential element of their ongoing success, and candidates will have the opportunity to work with cutting-edge technologies.

About WintermuteWintermute is a pioneering technology company and a leading player in the algorithmic trading sector, focusing on digital assets. We are dedicated to providing liquidity across a vast array of cryptocurrency exchanges and trading platforms. Additionally, we offer comprehensive OTC trading solutions, supporting both high-profile blockchain initiatives and traditional financial institutions transitioning into the crypto space. Our Wintermute Ventures division also invests in promising early-stage DeFi projects.Founded in 2017, Wintermute has adeptly navigated the complexities of industry cycles. Our culture merges the high-frequency trading standards of traditional markets with the innovative and entrepreneurial spirit typical of technology startups. We are firm believers in the transformative potential of blockchain, and we take a long-term approach to the digital asset market, positioning ourselves as leaders in fostering a compliant and innovative trading environment. For more details, you can read more here.Why Join Wintermute?We are on the lookout for an Algorithmic Trader with robust coding abilities (Python) and a keen interest in high-frequency trading, liquidity provision, and cryptocurrency markets. From day one, you will manage your own “desk” and have the chance to create and refine your own trading algorithms and strategies. You will receive invaluable mentorship from seasoned traders and developers, including our founders and management team. Expect a high degree of autonomy and responsibility from the outset, allowing you to make a significant impact without the hindrance of legacy systems or bureaucratic red tape.Your ResponsibilitiesFollowing a brief training period, you will focus on enhancing existing trading strategies, introducing new trading products, and advancing the technology behind our trading systems. You will analyze extensive trading and transaction data to extract insights, prioritize them, and devise solutions based on your findings. You will have the opportunity to influence P&L positively and will be encouraged to experiment with innovative ideas and strategies. We will provide more technical specifics during the interview process.Please note: We seek individuals with strong quantitative and coding skills; however, this is primarily a business/trading role rather than a research position.