S

StoneX Group

Brokers commodity, securities and currency trades

Principal Engineer - Multiple Teams

Full-TimeDeadline 10/4/27
$155k - $185k/yr+ Incentive compensation plan
Expert
Bachelor's, Master's
Birmingham, AL, USA
HybridFour days in the office per week.
Software EngineeringFull-Stack Engineering

About the job

Requirements
  • A Bachelor of Science or Master of Science degree in Computer Science, Engineering, or a related field.
  • At least 15 years of experience building and evolving large-scale global enterprise systems.
  • Experience in banking, financial services, or fintech environments.
  • Experience contributing to architecture and innovation across multiple teams or platforms.
  • Ability to learn new technologies quickly and apply them effectively in real-world scenarios.
  • Ability to multitask, prioritize, and drive delivery in a fast-paced environment.
  • A track record as a trusted problem solver and technical go-to person within engineering teams.
  • Hands-on expertise building scalable web applications using React or Angular with TypeScript; React is preferred.
  • Experience designing and developing enterprise applications using C# and .NET Core.
  • Expertise in distributed systems and microservices architecture, including event-driven design.
  • Experience with containerization and orchestration using Docker and Kubernetes.
  • Knowledge of cloud platforms, including Azure and/or AWS, and cloud-native principles.
  • Experience with messaging and streaming platforms such as Apache Kafka.
  • Experience building and maintaining CI/CD pipelines, preferably Azure DevOps.
  • Experience with TDD/BDD and modern testing frameworks.
  • Knowledge of relational and NoSQL databases.
  • Ability to collaborate across technical and business stakeholders.
Responsibilities
  • Drive innovation and adoption of modern technologies, including embedding AI/ML capabilities where appropriate.
  • Provide hands-on leadership in system design and development across the full application stack.
  • Balance strategic work with hands-on execution and delivery ownership across multiple initiatives.
  • Influence and guide multiple engineering teams, ensuring alignment with architectural standards and best practices.
  • Champion modernization efforts, including cloud-native architectures, microservices, and platform evolution.
  • Solve complex problems, debug critical issues, and guide teams through challenges.
  • Mentor senior engineers and technical leads, fostering engineering excellence and continuous learning.
  • Lead proof of concepts, experimentation, and technology evaluations to validate new ideas and approaches.
  • Establish and promote engineering best practices for CI/CD, testing strategies, observability, security, and performance.
  • Collaborate with stakeholders to translate complex business requirements into scalable technical solutions.
  • Identify and mitigate technical risks, bottlenecks, and system inefficiencies.
  • Contribute to critical code paths when needed, maintaining a high standard of code quality and maintainability.
Desired Qualifications
  • Experience building scalable web applications using React; Angular with TypeScript is an alternative.

About the company

StoneX Group is a financial services firm that connects farmers, producers, banks, fund managers and individual traders to commodity, securities and currency markets. Its core business is futures brokerage and clearing, executing and settling exchange-traded contracts for clients, and buying R.J. O'Brien made it the largest non-bank futures broker in the US. It also runs cross-border payments, trades physical commodities and metals, and operates online trading platforms for individual investors. StoneX earns commissions and spreads when clients trade, plus interest and fees on client balances and consulting fees for risk management advice. Its roots go back to 1924 in Chicago, and it is headquartered in New York City.

Company Size

5,001-10,000

Company Stage

IPO

Headquarters

New York City, New York

Founded

1924

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Simplify's Take

What believers are saying

  • Stability for staff: StoneX posted record quarterly profit of $174.3 million in the quarter ended March 2026.
  • Hedging for producers is the growth engine: Commercial segment operating revenue rose 97% in the June 2026 quarter.
  • Payments is expanding abroad: StoneX agreed in August 2026 to buy Banco Travelex, Brazil's first foreign-exchange-only bank.

What critics are saying

  • Retail teams face a shrinking business: self-directed operating revenue fell 13% in the June 2026 quarter.
  • Client cash is a profit source: StoneX earns interest on client balances, tying income to central bank rates.
  • Merger work falls on staff: R.J. O'Brien's futures clearing moved into StoneX Financial on May 31, 2026.

What makes StoneX Group unique

  • StoneX is the largest US futures broker outside a bank, after buying century-old futures broker R.J. O'Brien.
  • StoneX handles physical cash too: in March 2026 it bought WCS, a London wholesale banknote dealer.
  • StoneX trades physical goods, not only contracts: it bought feed merchant Advanced Marketing Group in August 2026.

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Benefits

Remote Work Options

Growth & Insights and Company News

Headcount

6 month growth

10%

1 year growth

8%

2 year growth

8%
Africa Finance Today
Oct 2nd, 2026
StoneX Group Inc. acquires Integra Trading S.A.S., establishing a colombian coffee origination and processing platform.

StoneX Group Inc. acquires Integra Trading S.A.S., establishing a colombian coffee origination and processing platform. Acquisition deepens StoneX Supply & Trading's physical coffee business with direct access to one of the world's premier coffee producing countries. NEW YORK, Oct. 02, 2026 (GLOBE NEWSWIRE) - StoneX Group Inc. (NASDAQ: SNEX) today announced that it has signed a definitive agreement to acquire Integra Trading S.A.S. ("Integra"), a coffee trader, exporter, and bean processor with extensive capabilities in Colombia. The acquisition will be made through StoneX's Switzerland-based trading entity and integrated into the StoneX Supply & Trading physical commodities business. Founded in 2015 and led by Manuel Rueda, Integra operates a certified processing mill near Medellín in the Antioquia region. The company holds several internationally recognized quality, food-safety, and sustainability certifications, including Organic, Rainforest Alliance, Fair Trade USA, Fair Trade International, 4C, Colombia's Protected Geographical Indication (IGP), and U.S. FSMA compliance. The combination is expected to be immediately accretive, and will accelerate growth by connecting Integra's origination and milling capabilities to StoneX's global client base, risk-management platform, and financial resources. The transaction strengthens StoneX's position in the global coffee market by expanding its direct origination and processing footprint in a key coffee-producing country, increasing access to high-quality Arabica coffees, and creating a more integrated platform from origin to end market. Together, these capabilities are expected to support higher volumes, enhance margins, and strengthen StoneX's ability to deliver value across the global coffee supply chain. Brent Grecian, CEO of StoneX Supply and Trading commented: "Integra gives StoneX a "boots on the ground" presence at origin in Colombia, a licensed exporter, an owned processing mill, and a team with deep grower relationships. It's a natural extension of our physical coffee business, and it's expected to contribute from day one while giving our clients a more direct, traceable, and sustainable supply chain." Manuel Rueda, Founder of Integra said: "Joining StoneX gives our business the capital, platform, and global reach to grow well beyond what we could achieve on our own. We're keeping our team and our origination model intact while gaining direct access to end-user clients around the world." About StoneX Group Inc. StoneX Group Inc., through its subsidiaries, operates a global financial services network that connects companies, organizations, traders, and investors to the global market ecosystem through a unique blend of digital platforms, end-to-end clearing and execution services, high-touch service, and deep expertise. The company strives to be its clients' trusted partner, providing its network, products, and services to help them pursue business opportunities, manage market risks, make informed investment decisions, and improve their business performance. A Fortune 50 company headquartered in New York City and listed on the Nasdaq Global Select Market (NASDAQ: SNEX), StoneX Group Inc. and its more than 5,200 employees serve over 80,000 commercial, institutional, and payments clients, as well as more than 260,000 retail accounts, across more than 80 offices on six continents. Further information is available at www.stonex.com. About Integra Trading Founded in 2015 by Manuel Rueda, Integra Trading is a Colombia-focused coffee company with more than 15 years of industry experience and a Miami-based sales hub. The company has a state-of-the-art coffee processing and storage facility near the Medellín region. The facility holds Organic, Fair Trade and Rainforest Alliance certifications, supporting traceability and international quality standards. Legal Disclaimer: EIN Presswire provides this news content "as is" without warranty of any kind. Africa Finance Today do not accept any responsibility or liability for the accuracy, content, images, videos, licenses, completeness, legality, or reliability of the information contained in this article. If you have any complaints or copyright issues related to this article, kindly contact the author above.

Global Trading
Oct 1st, 2026
Vizzini joins StoneX.

Vizzini joins StoneX. October 1, 2026 4:53 pm Jim Vizzini has joined StoneX Group as managing director of outsourced trading. He is based in London. Last year, the firm completed its acquisition of futures brokerage and cleaning firm [...] This content is for registered users only. (C) Markets Media Europe 2026

GlobeNewswire
Oct 1st, 2026
StoneX and Cotlook to launch new OTC cotton derivatives.

StoneX and Cotlook to launch new OTC cotton derivatives. The new suite of OTC derivatives will help cotton market participants manage basis risk associated with non-US cotton exports. NEW YORK, Oct. 01, 2026 (GLOBE NEWSWIRE) - StoneX Markets LLC ("SXM"), a subsidiary of StoneX Group Inc. (NASDAQ: SNEX), has entered into an exclusive licensing agreement with Cotlook to launch a new suite of OTC cotton derivatives, designed to help market participants manage risk in an increasingly globalised cotton market. The first product developed under the partnership will be the Cotlook Brazil Basis Swap, a new risk management tool referencing Cotlook's internationally recognised cotton pricing benchmarks. The launch comes amid a major shift in global cotton trade flows. Brazil overtook the US as the world's largest cotton exporter in the 2023/24 season, cementing its position as a key supplier to Asian textile manufacturers and an increasingly important influence on global pricing. As Brazil's role has grown, so has the need for more effective risk management solutions. The first OTC cotton derivative will reference the Brazilian component of the Cotlook A Index, helping farming cooperatives, merchants, mills, manufacturers and other cotton market participants better manage and hedge risk. Designed with the needs of the cotton supply chain in mind, it represents a significant enhancement to the tools available for managing price exposure. Antonia Prescott, Managing Director and Editor, Cotlook, commented: "The collaboration with StoneX is an important evolution in our longstanding mission to bring price transparency to the international cotton industry. We are pleased to be working with StoneX to create a valuable instrument for our customers to actively mitigate the full composition of their price risk." Brett Phillpott, Global Co-Head of Commercial Hedging & Commodities, StoneX, added: "Our customers in the global cotton industry have long sought the ability to manage the basis risk inherent in their international cotton supply chains. These OTC derivatives will allow them to hedge a significant portion of their price risk that was previously unhedged. "By working with Cotlook, we are enabling our clients to leverage a well-established benchmark to strengthen their risk management capabilities and improve forward price transparency for the market." About Cotlook Cotlook Ltd is an independent UK-based company that has been engaged in publishing cotton prices, news and market analysis for over 100 years. It has a worldwide reputation for accuracy and impartiality, and its price information is trusted and used by government institutions in the US, China and elsewhere, as well as by international trading companies and other major cotton organisations. www.cotlook.com About StoneX StoneX Group Inc., through its subsidiaries, operates a global financial services network that connects companies, organisations, traders, and investors to the global market ecosystem through a unique blend of digital platforms, end-to-end clearing and execution services, high-touch service, and deep expertise. The company strives to be its clients' trusted partner, providing its network, products, and services to help them pursue business opportunities, manage market risks, make informed investment decisions, and improve their business performance. A Fortune 50 company headquartered in New York City and listed on the Nasdaq Global Select Market (NASDAQ: SNEX), StoneX Group Inc. and its more than 5,400+ employees serve over 80,000+ commercial, institutional, and payments clients, as well as more than 260,000 retail accounts, across more than 80 offices on six continents. Further information is available at www.stonex.com/en/ Media enquiries:

Yahoo Finance
Oct 1st, 2026
StoneX launches Singapore FX booking center to expand Asia-Pacific capabilities

StoneX Group has launched a Singapore foreign exchange booking centre and SG1 connectivity, expanding its FX capabilities in Asia-Pacific. The new facility enables local pricing and execution from Singapore, improving response times and aligning client support with regional market hours. The booking centre builds on StoneX's global FX infrastructure, which includes NY4 and LD4 hubs. It aims to enhance execution quality for both institutional and corporate clients trading spot, forwards, NDFs, swaps, and options. StoneX FX has also expanded its Asia-Pacific currency coverage, adding seven new CNH pairs and enhancing liquidity across key regional currencies including JPY, SGD, HKD, KRW, TWD, INR, IDR, PHP, THB, and AED. The development brings pricing and decision-making closer to Asian clients, reducing reliance on overnight handovers and enabling faster execution adjustments.

Automotive Press Releases
Oct 1st, 2026
StoneX and Cotlook to launch new OTC cotton derivatives.

StoneX and Cotlook to launch new OTC cotton derivatives. The new suite of OTC derivatives will help cotton market participants manage basis risk associated with non-US cotton exports. NEW YORK, Oct. 01, 2026 (GLOBE NEWSWIRE) - StoneX Markets LLC ("SXM"), a subsidiary of StoneX Group Inc. (NASDAQ: SNEX), has entered into an exclusive licensing agreement with Cotlook to launch a new suite of OTC cotton derivatives, designed to help market participants manage risk in an increasingly globalised cotton market. The first product developed under the partnership will be the Cotlook Brazil Basis Swap, a new risk management tool referencing Cotlook's internationally recognised cotton pricing benchmarks. The launch comes amid a major shift in global cotton trade flows. Brazil overtook the US as the world's largest cotton exporter in the 2023/24 season, cementing its position as a key supplier to Asian textile manufacturers and an increasingly important influence on global pricing. As Brazil's role has grown, so has the need for more effective risk management solutions. The first OTC cotton derivative will reference the Brazilian component of the Cotlook A Index, helping farming cooperatives, merchants, mills, manufacturers and other cotton market participants better manage and hedge risk. Designed with the needs of the cotton supply chain in mind, it represents a significant enhancement to the tools available for managing price exposure. Antonia Prescott, Managing Director and Editor, Cotlook, commented: "The collaboration with StoneX is an important evolution in our longstanding mission to bring price transparency to the international cotton industry. We are pleased to be working with StoneX to create a valuable instrument for our customers to actively mitigate the full composition of their price risk." Brett Phillpott, Global Co-Head of Commercial Hedging & Commodities, StoneX, added: "Our customers in the global cotton industry have long sought the ability to manage the basis risk inherent in their international cotton supply chains. These OTC derivatives will allow them to hedge a significant portion of their price risk that was previously unhedged. "By working with Cotlook, we are enabling our clients to leverage a well-established benchmark to strengthen their risk management capabilities and improve forward price transparency for the market." About Cotlook Cotlook Ltd is an independent UK-based company that has been engaged in publishing cotton prices, news and market analysis for over 100 years. It has a worldwide reputation for accuracy and impartiality, and its price information is trusted and used by government institutions in the US, China and elsewhere, as well as by international trading companies and other major cotton organisations. www.cotlook.com About StoneX StoneX Group Inc., through its subsidiaries, operates a global financial services network that connects companies, organisations, traders, and investors to the global market ecosystem through a unique blend of digital platforms, end-to-end clearing and execution services, high-touch service, and deep expertise. The company strives to be its clients' trusted partner, providing its network, products, and services to help them pursue business opportunities, manage market risks, make informed investment decisions, and improve their business performance. A Fortune 50 company headquartered in New York City and listed on the Nasdaq Global Select Market (NASDAQ: SNEX), StoneX Group Inc. and its more than 5,400+ employees serve over 80,000+ commercial, institutional, and payments clients, as well as more than 260,000 retail accounts, across more than 80 offices on six continents. Further information is available at www.stonex.com/en/ Media enquiries: Legal Disclaimer: EIN Presswire provides this news content "as is" without warranty of any kind. We do not accept any responsibility or liability for the accuracy, content, images, videos, licenses, completeness, legality, or reliability of the information contained in this article. If you have any complaints or copyright issues related to this article, kindly contact the author above.