Junior Developer Support Engineer

Join Hudson River Trading (HRT) as a Junior Crypto Electronic Trading Support Engineer in our London office. As part of our dynamic Trade Operations (TradeOps) team, you will manage one of the world's leading electronic trading platforms, focusing on crypto trading. Your role will involve configuring, monitoring, and optimizing trading processes while addres…

Established in 2018, Fasanara Digital operates as the cryptocurrency division of Fasanara Capital, an FCA-authorized investment firm managing assets worth USD 5 billion. With a dedicated focus on digital assets, Fasanara Digital has emerged as one of the largest, most enduring, and top-performing market neutral funds in the industry. Our approach to trading is rigorous, technologically advanced, and scientifically driven.We are currently seeking a motivated Junior Trade Support Engineer to join our front office technology team. This is an entry-level position ideal for an enthusiastic engineer with a solid STEM background who is eager to engage with live, high-frequency trading systems. Your role will involve monitoring, investigating, and resolving real-time trading and infrastructure issues, collaborating with traders, quants, and senior engineers to ensure our systems operate seamlessly in dynamic market conditions.

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

About JuniorAt Junior, we are on a mission to revolutionize the investment research landscape with innovative LLM-powered tools designed specifically for private market investors. Our clientele includes some of the world's leading private equity and consulting firms, collectively managing billions in annual investments. As a profitable and bootstrapped enterprise, we have grown our team to 24 talented individuals across our London and NYC offices, and we achieved a remarkable 10x revenue growth in 2025.Discover more about our mission and values here. Role DescriptionAs our first dedicated Backend Engineer focused solely on our internal go-to-market and operations stack, you will play a pivotal role in shaping our technology framework. Your responsibilities will include:Crafting an AI-first tech stack from the ground up, influencing infrastructure decisions and priorities.Rapidly deploying internal tools and receiving immediate feedback from your team members, who will quickly become your strongest advocates!Developing and managing our data warehouse and internal data architecture.Engaging in innovative projects that leverage LLMs, automation, and advanced agent technologies.Cultivating our engineering culture. Sample Set of ProjectsUser Health Reporting + CRM Data Quality: Automate data pipelines to enhance metrics visibility in BI dashboards and ML evaluations, while establishing alert systems for risk signals.User Feedback Integration: Develop a tool that summarizes user feedback calls, prioritizes feature requests, and communicates findings to our Product team.Billing and Invoicing: Implement complex B2B pricing models encompassing usage-based, seat-based, and platform fees, while automating financial reconciliation processes.Data Warehouse Development: Create a data warehouse to integrate product, CRM, and operational data, and generate tailored dashboards for different teams. About YouWe are searching for a backend/data engineer who...

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.

Join Us as a Software EngineerAt Talos, we are leading the way in institutional trading technology for the digital asset market, established in 2018. Our cutting-edge solutions empower major players in the crypto ecosystem, facilitating seamless trading and settlement processes.Our mission is to promote the widespread adoption of digital assets, creating a trusted and innovative platform that supports the entire trading lifecycle. We pride ourselves on fostering a workplace that values kindness, respect, and inclusivity, where diverse perspectives fuel our progress.As part of a close-knit yet decentralized team of skilled engineers and professionals, you will thrive in our hybrid-friendly environment, with hubs in New York, London, Singapore, Sweden, and Cyprus.As a Software Engineer at Talos, you will be instrumental in developing high-performance systems that bridge the gap between crypto and capital markets. Collaborating with our talented team, you will enhance our backend trading and settlement platform, focusing on areas such as order routing, market data connectivity, position management, and risk systems.We seek passionate engineers eager to take ownership of their work and contribute across the entire development lifecycle—design, implementation, testing, and deployment. If you enjoy tackling complex challenges in a fast-paced environment and are eager to learn from seasoned colleagues, we want to hear from you! Experience in finance or crypto is a plus, but your coding skills, critical thinking, and collaborative spirit are our top priorities.Interested in our engineering culture? Explore Sonic, our inaugural open-source project that enables microsecond network stack latency in Go: https://github.com/talostrading/sonic

About Caxton Associates:Founded in 1983, Caxton Associates is a prestigious global trading and investment firm with a strong presence in major financial hubs, including New York, London, Bengaluru, Monaco, Singapore, and Dubai. The firm specializes in managing client and proprietary capital through a diverse suite of investment products tailored to meet the unique requirements of its investors. Utilizing a multi-portfolio manager approach, Caxton excels in discretionary global macro investing, drawing on its extensive expertise across various asset classes and markets.About the Role:We are on the lookout for a dedicated Trading Support Engineer to become an integral part of our London Tradeflow team. In this role, you will play a crucial role in supporting front-office trading operations, ensuring the seamless flow of orders and executions across both internal and external trading systems.This hands-on production support position emphasizes monitoring live trading activities, analyzing order and execution flows, and troubleshooting any issues related to FIX connections and internal systems. You will collaborate closely with trading, operations, and global technology teams to guarantee timely and accurate trade processing.Success in this role demands meticulous attention to detail, excellent communication skills, and the ability to remain composed in fast-paced, time-sensitive environments.Responsibilities:As a valued member of the Tradeflow support team, your key responsibilities will include:Monitoring and supporting trade, order, and execution flows across FIX connections, internal order management systems, and external brokers and trading venues.Analyzing FIX message traffic (including orders, cancellations, rejections, and executions) to identify and resolve routing or workflow issues.Assisting with Bloomberg AIM order and execution workflows.Investigating trade breaks, discrepancies, and missing or delayed executions.Providing support for troubleshooting session drops, connectivity issues, and counterparty rejections.Coordinating with brokers, trading desks, and operations teams to address daily production challenges.Escalating incidents as necessary and providing clear status updates to stakeholders.Maintaining documentation and contributing to operational runbooks and procedures.Requirements:1–3 years of experience in supporting trading, middle office, or financial systems.Fundamental understanding of FIX messaging and the order-to-trade lifecycle.Familiarity with financial markets and execution workflows.Strong analytical and problem-solving abilities.Basic scripting skills, preferably in Python.Proficiency with log analysis and monitoring tools.Experience with version control systems (e.g., Git).Some knowledge of SQL and relational database schemas would be advantageous.Excellent written and verbal communication skills.Ability to work efficiently under pressure in time-sensitive trading environments.Exhibits and adheres to the highest ethical standards.

Join Our Innovative Team in the Digital Asset MarketFounded in 2018, Talos is at the forefront of providing institutional-grade trading technology tailored for the global digital asset market, empowering many key players within the crypto ecosystem.At Talos, our mission is to foster the widespread adoption of digital assets by effectively connecting institutions to the evolving digital asset landscape. We are dedicated to developing the most innovative and trusted platform, supporting a comprehensive trading lifecycle.Our workplace embodies kindness, respect, and inclusivity, valuing diverse perspectives that contribute to our growth. We believe that each team member brings unique insights and skills that propel Talos towards excellence. In our commitment to collaboration and mutual success, we cultivate a culture of trust and integrity, working together to build something remarkable. Your contributions will be vital to our collective achievements.We are a close-knit yet decentralized team of experienced engineers and business professionals, operating in a hybrid-friendly environment with offices in New York, London, Singapore, Sweden, and Cyprus.About the RoleAs a Software Engineer in our Trading Connectivity team, you will be responsible for designing, developing, and maintaining high-performance backend systems that interface with our extensive provider network. Your role will involve collaborating with product managers, trading support, other engineering teams, and clients to facilitate the integration of new liquidity providers into the Talos network. You will be instrumental in enhancing the platform's scalability, reliability, security, and overall performance, managing the integration process from requirement gathering to deployment.To learn more about Talos's engineering culture, explore Sonic, our inaugural open-source project that enables us to achieve microsecond network stack latency in Go: https://github.com/talostrading/sonic

Join the Digital Asset RevolutionFounded in 2018, Talos is at the forefront of institutional-grade trading technology for the global digital asset market, enabling many prominent players within the crypto ecosystem. Our mission is to facilitate the widespread acceptance of digital assets by connecting institutions to this evolving landscape seamlessly. We are dedicated to creating the most innovative and reliable platform in the industry, supporting the entire trading lifecycle.At Talos, we promote a culture of kindness, respect, and inclusivity, valuing diverse perspectives that contribute to our collective success. Each team member brings unique insights and skills that propel Talos forward, fostering a collaborative environment built on trust, integrity, and mutual growth.As part of our globally distributed team of seasoned engineers and business professionals, you will find a hybrid-friendly workplace that encourages your unique talents and contributions to help us build something extraordinary.Client Services Engineer RoleWe are seeking a skilled Client Services Engineer to support our clients in a dynamic, round-the-clock global digital asset trading environment. This pivotal role will ensure ongoing client success and the overall integrity of our trading systems.

We are collaborating with a prestigious global banking institution to recruit a skilled Support Engineer. This position is part of the Desktop Support team, dedicated to offering exceptional IT assistance to employees of a financial services firm located in London. The ideal candidate will exemplify professionalism, providing a well-organized, responsive, and customer-centric support service.The role demands a proficient Desktop Support Engineer who champions the Trading Support function, possessing the ability to communicate clearly and effectively with business users across all levels, including senior executives and IT management.Key Responsibilities:Deliver hands-on desktop support to business users through phone, email, ticketing systems, and in-person, resolving issues within agreed SLAs while managing user expectations.Assist with new joiner onboarding and execute desk moves and equipment changes as necessary.Provide 1st to 3rd line support across hardware, software, and end-user applications.Support market data applications and services.Set up and maintain mobile devices.Collaborate with third-party vendors to troubleshoot and resolve issues.Engage in out-of-hours support, including on-call rotations, desk moves, and ad-hoc testing.Exhibit flexibility to provide evening cover as needed (up to 10:30 PM).Qualifications:Demonstrated experience in supporting a trading floor or front-office environment.Strong market data support experience (e.g., Bloomberg, Reuters).Extensive knowledge of Windows 10 desktop support and Office 365.Familiarity with Active Directory and endpoint management tools (GPO, WMI, SCCM).Experience with virtual desktop environments (Citrix XenDesktop, VMware, Nutanix).Solid understanding of desktop and laptop hardware, including VDI setups.Experience with broker and trading applications (e.g., Brokertec, GFI, ICAP).Proficiency in mobile device support (iPhone, iPad).Knowledge of ServiceNow or similar ticketing systems.Exposure to scripting or automation (PowerShell preferred).Exchange administration knowledge is advantageous but not required.Personal Skills:Confident communicator, capable of effectively engaging with stakeholders and suppliers at all levels.Strong team player, adept at leading, guiding, and developing others.Calm and resilient under pressure, experienced in managing demanding users.Proactive, self-motivated, with the ability to prioritize and resolve complex issues.Adaptable, with a “can-do” attitude and a commitment to continuous improvement.Contract Details:Duration: 3 Months rolling contractSalary: up to £40,000

Join Talan as a Trade Floor Support Engineer, where you will play a critical role in providing technical support for trading systems and applications. You will collaborate with traders and other stakeholders to ensure optimal performance and functionality of trading platforms.Your responsibilities will include diagnosing and resolving technical issues, performing routine maintenance, and assisting with the implementation of new functionalities. You will also have the opportunity to contribute to system enhancements and collaborate with development teams.

Position Overview: Ensure the global trading platform is fully operational before and after trading hours. Monitor and provide support for the entire transaction flow across the trading platform. Rapidly identify, analyze, and resolve alerts and issues, or escalate them to minimize trading disruptions and prevent outages. Manage incidents by creating and dispatching reports in accordance with established procedures. Engage intensively with the trading community, back office operations, brokers, exchanges, and development and infrastructure teams. Assist with scheduled changes, including application deployments, network implementations, and server maintenance. Oversee automated processes, scheduled jobs, and routine reporting. Handle user requests by tracking their status, reviewing approvals, updates, resolutions, and closures. Identify and eliminate inefficiencies such as repetitive tasks, manual processes, and suboptimal tools/workflows, driving continuous improvements through automation and collaboration with internal and external stakeholders.

Join our dynamic team at Teza Technologies as a Junior Project Manager focusing on natural gas trading. In this pivotal role, you will design and implement systematic, data-driven trading strategies that directly contribute to profitability and enhance our competitive position in the market.LocationLondon, UK (Hybrid work model requiring 3 days in the office)Key ResponsibilitiesDevelop, test, and implement systematic trading strategies in the natural gas markets.Analyze extensive, high-frequency, and fundamental datasets to generate predictive signals and improve existing models.Oversee positions, exposures, and P&L to ensure conformity with portfolio risk parameters.Work alongside quantitative developers to transform research prototypes into production-ready trading systems.Integrate natural gas fundamentals (storage, flows, weather, policy, infrastructure) into model development and trading strategies.Participate in comprehensive research cycles: from idea generation to backtesting, stress testing, and performance attribution.Basic RequirementsBachelor’s or Master’s degree in a STEM-related field (Mathematics, Statistics, Computer Science, Engineering, Finance, etc.).Proficient coding skills in Python.Previous experience in algorithmic trading, quantitative research, or a similar role across any asset class.Demonstrated experience in natural gas markets (trading, research, or analytics).Understanding of time-series modeling, statistical analysis, or systematic trading methodologies.Solid grasp of financial markets and portfolio risk management concepts.Capability to excel in a fast-paced, collaborative environment.Preferred QualificationsExperience with real-time trading systems and algorithmic execution.Familiarity with ETL pipelines and large-scale data infrastructures.Knowledge of portfolio risk frameworks.Graduate-level research or professional experience in quantitative finance or commodities trading.What We OfferA collaborative and innovative work environment.Opportunities for professional development and growth.

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.

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.

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.

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!

About WintermuteWintermute is a prominent technology unicorn and one of the leading algorithmic trading firms specializing in digital assets. We excel in providing liquidity across a wide range of cryptocurrency exchanges and trading platforms, offer diverse OTC trading solutions, and support significant blockchain projects and traditional financial institutions transitioning into the crypto space. Additionally, Wintermute Ventures actively invests in early-stage DeFi projects.Founded in 2017, Wintermute has adeptly navigated through various industry cycles. We blend the rigorous technological standards of high-frequency trading firms with the innovative spirit characteristic of tech startups. At Wintermute, we are committed to harnessing the innovative potential of blockchain technology and hold a long-term vision for the digital asset market, positioning ourselves as leaders in establishing a creative and compliant marketplace. Discover more about us here.Join Our DeFi TeamWe are seeking an enthusiastic and inquisitive student to join our DeFi team for a 6-month internship. In this role, you will research on-chain protocols and conduct data-driven experiments that contribute to our understanding of decentralized finance.Our trading philosophy is fundamentally technological—our traders are analytical and programmatic problem solvers who thrive on innovation. In true DeFi fashion, this position offers you the chance to take on various roles, working across multiple codebases and languages to explore the ecosystem's design frontiers.We pride ourselves on being a close-knit, collaborative team that values open communication and creative exploration. You will collaborate closely with seasoned traders and developers, receiving mentorship while being encouraged to express your perspectives, challenge ideas, and explore new avenues of inquiry collectively.

About Wintermute Wintermute is a pioneering technology unicorn and a leading global force in the digital asset market. As the largest crypto-native algorithmic trading firm, we provide unparalleled liquidity across all major exchanges and trading platforms. Our OTC desk facilitates a broad spectrum of spot and derivatives products, serving over 2,000 counterparties from both crypto-native and traditional financial institutions. We are actively engaged in advancing the blockchain ecosystem, positioning ourselves as a major player in DeFi, along with our investments, partnerships, and incubations.Founded in 2017 by leaders from the trading industry, Wintermute has adeptly navigated various cycles within the crypto industry. Our culture harmoniously blends the rigorous technology standards of high-frequency trading firms with the innovative spirit of tech startups. Discover more about us here.About the RoleWe are seeking a seasoned Product Manager to spearhead the development of our NODE platform, designed to provide seamless crypto trading experiences for institutional clients. This is a hands-on, cross-functional role that will have a significant impact. You will collaborate closely with engineers, designers, core developers, and stakeholders across the business to define, build, and launch a secure, scalable, and high-performance trading platform.