81 principal software engineer jobs found

Excited to grow your career? Our purpose is to make it easy for people to save and invest for a better future. We are looking for great people to join us, so please come and invest in YOUR future at Hargreaves Lansdown. We know that sometimes people can be put off applying for a job if they don't tick every box. If you're excited about working for us and have most of the skills or experience we're looking for, please go ahead and apply. We’d love to hear from you! About the role Salary: Up to £95,000 dependent on experience (generous benefits package on top) Join HL – Where Your Talent Shapes the Future of Investing At Hargreaves Lansdown (HL), we’re more than the UK’s number 1 investment platform for private investors – we’re innovators, problem‑solvers and changemakers, helping over 1.8 million clients save and invest with confidence. For more than 40 years, we’ve transformed how people engage with their money, combining cutting‑edge technology with...

Excited to grow your career? Our purpose is to make it easy for people to save and invest for a better future. We are looking for great people to join us, so please come and invest in YOUR future at Hargreaves Lansdown. We know that sometimes people can be put off applying for a job if they don't tick every box. If you're excited about working for us and have most of the skills or experience we're looking for, please go ahead and apply. We’d love to hear from you! About the role About HL and the opportunity. We’re building the next generation platform for one of the UK’s largest financial services companies, trusted by over 2 million clients and managing c.£150 billion in assets. This is your opportunity to shape technology that will redefine how people invest and achieve financial freedom. You will build our next generation Unified Client Experience (UCX) frontend that will streamline client journeys across a range of products and services, in both web and...

Join LSEG’s World-Check Risk Intelligence Team Empowering due diligence with trusted data and cutting-edge technology. World-Check Risk Intelligence provides accurate, reliable information and powerful tools to support compliance with due diligence obligations, including Know Your Customer (KYC) screening and anti-money laundering (AML) requirements. We are seeking a visionary   Principal Software Engineer  to lead the design and development of scalable, high-performance software solutions in   World-Check Content Curation Platform . This role is ideal for a seasoned technologist who thrives in complex environments, drives innovation, and mentors engineering teams to deliver world-class products. You will play a critical role in shaping our technical strategy and implementation, engineering best practices, and engineering culture. At LSEG, we prioritize equal opportunity and are committed to building diverse teams that foster collaboration and innovation....

Join LSEG’s World-Check Risk Intelligence Team Empowering due diligence with trusted data and cutting-edge technology. World-Check Risk Intelligence provides accurate, reliable information and powerful tools to support compliance with due diligence obligations, including Know Your Customer (KYC) screening and anti-money laundering (AML) requirements. We are seeking a visionary Senior Principal Software Engineer to lead the design and development of scalable, high-performance software solutions in World-Check Content Curation Platform . This role is ideal for a seasoned technologist who thrives in complex environments, drives innovation, and mentors engineering teams to deliver world-class products. You will play a critical role in shaping our technical strategy and implementation, engineering best practices, and engineering culture. At LSEG, we prioritize equal opportunity and are committed to building diverse teams that foster collaboration and innovation. Key...

Role profile:   Are you an experienced software engineer with a passion for productioni z ing data science solutions? Do you want to build innovative products for financial professionals using cutting edge tech ? If so, we’d love to talk to you.    Role summary:   You will be working for a growing organization.   You will develop of high-impact, scalable AI solutions.   You will combine strategic thinking, strong problem-solving skills, and a collaborative approach to ensure your team successfully ships great products .    What you'll be doing:   Design and development of scalable software products .   Solve complex technical issues, optimize workflows, and provide strategic insights to partners to support project goals and timelines.    Collaborate closely with Data Science , research and product teams    Set high technical standards   This is a hands-on, individual...

As a Principal Software Engineer reporting to the VP of Engineering, you’ll play a critical role in supporting and enhancing the trading systems used for running the US Equities Markets. Initially, the primary responsibility be focused with working on the two Trade Reporting Facilities (TRFs) run by NASDAQ. Over time, however, the role is expected to grow into broader support of both the exchanges and the routing systems managed by NASDAQ. You’ll thrive in this position if you’re collaborative, data-driven, love solving technical challenges, and have a passion for both technology and learning the business-needs driving the changes of the US Financial markets. Key Responsibilities Work with business teams to design enhancements to the NASDAQ trading systems Work with engineering teams to design performance, capacity, and infrastructure improvements along Rearchitect solutions to remove technical debt Develop, test, and deploy these enhancements Guide QA and train...

Lab49  is an award-winning specialist consultancy that  creates bespoke technology  in partnership with the most important companies in finance. We were founded in 2002 to bring Silicon Valley solutions to Wall Street’s door. Since then, we have worked on successive waves of technological change, including distributed computing, high-speed automation, enterprise UX and digital distribution (for which Lab49 was among the first significant practices established on Wall Street), DevOps, cloud and data science. Today, we are an established partner in financial markets, having delivered hundreds of projects for clients including all the world’s tier-one investment banks and many of the largest buy-side firms globally. Being part of Lab49 means bringing your drive and creativity into an environment where your contributions will make immediate impact. Engineers will work in cross functional teams, consulting directly with our clients, shaping not only technical solutions to...

Job Description: Position Title: Principal Back-end Software Engineer - Real-Time Portfolio Risk Analytics C#/.NET Department: Systems Development Division:  Cboe Data Vantage Location: Flex/Hybrid - Chicago office Position Summary: Cboe Data Vantage is seeking a highly skilled Principal Software Engineer to lead the re-architecture and modernization of our real-time Portfolio Risk Analytics system. This is a critical role for an experienced engineer with a strong background in C#/.NET back-end development and expertise in the equity and index options industry. The system processes real-time market data, reference data, and positions updates to generate risk metrics and projected scenarios, powering critical decision-making tools. As a Principal Engineer, you will play a key role in rearchitecting the existing system to make it more scalable, supportable, and performant, while also supporting and optimizing the current system during the transition....

LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a commitment to excellence in delivering the services our customers expect from us. LSEG Data & Analytics team is seeking a highly technical, hands-on Java developer. Our group is focused on bringing a new level of efficiency, transparency and openness to the trading process by building a collaborative community of investors, brokers, technology firms and content providers. Through our modular, end-to-end trade management platform, users can: execute everything from simple single stock trades to complex strategies across markets and time zones and manage their risk throughout the trade lifecycle; access our growing network of execution brokers to route Equities, Futures or Options orders globally, as well as dozens of integrated prime and clearing brokers through our growing suite of middle office tools; and...

Implements the software development strategy for a set of Technology Products and applies business requirements and knowledge of software development lifecycles to guide the development of complex software products or customer solutions. Role Responsibilities & Key Accountabilities: - Demonstrates an extensive knowledge of technologies and/or thought leadership level of a technology, providing direction, mentoring and advising others on design, development and / or implementation best practice and processes - Leads projects and promotes an inclusive and open culture - Continues to build and demonstrates a breadth of knowledge of various domains within technology, understanding the linkages and dependencies of projects/work and the key senior stakeholders - Creates and implements technical solution designs and resolves issues - Supports technical roadmaps for the timely implementation of a technical solution strategy - Advises stakeholders internally as a software...

Designs and develops information technology solutions for internal or external clients, which may include systems strategy, development and/or integration services. May also complete consulting projects with external clients in the area of technology strategy, information systems security, data strategy, systems architecture, custom systems development, new installation and migrations of function/business area applications, application integration web, IP and online solutions and networking. Designs, codes, tests and/or customizes solutions to meet client requirements. May support systems infrastructure, desktop or network architects by preparing detailed specifications. Develops new technology product ideas or strategic product extensions into a commercial product. Establishes technology product specifications, and collaborates with various functions to ensure successful product development and implementation. Provides strategic input/guidance to teams working with...

About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company.  We realize people do not fit into neat boxes. We are looking for curious and empathetic individuals who are committed to developing themselves and learning new...

About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company.  We realize people do not fit into neat boxes. We are looking for curious and empathetic individuals who are committed to developing themselves and learning new...

Who we are We’re visionary innovators who provide trading and workflow automation solutions, high-value analytics, and strategic consulting to corporations, financial institutions, central banks, and governments. More than 40% of the world’s largest companies use our solutions. We’ve achieved tremendous growth by bringing together some of the best and most successful financial technology companies in the world. At ION, we offer careers that provide many opportunities: To invent. To design. To collaborate. To build. To transform businesses and empower people around the world to do more, faster, and better than before. Imagine what you can do and experience. This is where you can do your best work.   Learn more at iongroup.com .   Role and Responsibilities   ·        Serve as a technical lead contributing to and directing the efforts of development teams, including internal and external team members. ·        Design, develop, modify, implement,...

At Broadridge, we've built a culture where the highest goal is to empower others to accomplish more. If you’re passionate about developing your career, while helping others along the way, come join the Broadridge team. Broadridge is growing! We are currently hiring a Senior Director , Principal Software Engineer, who will serve as a senior technical leader responsible for designing, developing, and delivering high-quality, scalable software systems. This role involves driving architectural decisions, mentoring engineers, and influencing technical strategy across multiple projects and teams. The ideal candidate is both a hands-on architect and a strategic thinker who can translate complex business requirements into innovative technical solutions. As part of the team, you’ll work closely with Product leadership to understand the strategic roadmap and business goals, and then lead and mentor the engineering staff to help achieve those goals. You’ll help design, prototype,...

Job Description: About BIDS Trading BIDS Trading is an institutional network and broker/dealer that provides software to help asset managers trade large blocks of liquidity. BIDS Trading operates one of the world’s largest equity block trading systems across the U.S., Europe, Canada, Australia, and Japan. Our flagship trading workstation, BIDS Trader, delivers block trading opportunities to hundreds of the world’s largest asset managers. About The Role We are seeking a product-focused Principal Software Engineer to play a pivotal role in shaping the future of our buy-side product offerings. The right candidate will bring an entrepreneurial mindset to optimize existing product capabilities and partner with our business strategy experts to create new products, unlocking business opportunities. This role includes crafting a forward-looking roadmap for BIDS Trader, as well as delivering on that vision. Key Responsibilities Product Ownership : Take full...

About Us At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company.  We realize people do not fit into neat boxes. We are looking for curious and empathetic individuals who are committed to developing themselves and learning new...

Calling all innovators - find your future at Fiserv. We're Fiserv, a global leader in Fintech and payments, and we move money and information in a way that moves the world. We connect financial institutions, corporations, merchants and consumers to one another millions of times a day - quickly, reliably, and securely. Any time you swipe your credit card, pay through a mobile app, or withdraw money from the bank, we're involved. If you want to make an impact on a global scale, come make a difference at Fiserv. Job Title Principal Cloud Engineer (AWS) About your role?   You will design, implement, manage, secure, scalable, and reliable cloud landing zone/foundations. You will lead the design and implementation of key areas related to cloud including IAM, Hybrid DNS, centralized logging, account factory, network topology and more. What you'll do: Design and develop automated solutions (via API and Self-service) for cloud-based infrastructure and controls...

Calling all innovators – find your future at Fiserv. We’re Fiserv, a global leader in Fintech and payments, and we move money and information in a way that moves the world. We connect financial institutions, corporations, merchants, and consumers to one another millions of times a day – quickly, reliably, and securely. Any time you swipe your credit card, pay through a mobile app, or withdraw money from the bank, we’re involved. If you want to make an impact on a global scale, come make a difference at Fiserv. Job Title Java Technical Lead About your role: At Fiserv, we are dedicated to transforming financial services technology to benefit our clients. As a Software Development Engineering - Sr Advisor I, you will play a critical role in leading the design, development, and maintenance of high-quality software applications. You will work with cross-functional teams to deliver solutions that align with our business goals and client needs. What you'll do:...

LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a commitment to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. It’s how we’ve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. We are looking to hire a highly skilled and passionate low latency java engineer to help design, build, and operate large-scale trading platforms. The group is responsible for FX trading and related services. We value technical aptitude, innovative thinking, great learning and teamwork ability. Responsibilities Closely working with architects and other team members and groups to develop and build...

Role Purpose This is an exciting role i n the Security Architecture team at LSEG. This role is to join the team as a Senior Security Specialist – with a view to strengthening and building out our assurance processes as we move from a traditional on-prem operation, into the virtual, software defined and cloud paradigm. Security Architecture Review team is responsible for reviewing the security posture of new systems alongside the Principal Security Architects; Reviewing firewall rule changes in both BAU and strategic initiatives Successful candidate will be part of Security Architecture Review team to define the role’s goals, processes and deliverable, undertake Security Architecture Reviews, support our strategy to Shift Left and enable the business to achieve its goals in agility and innovation. Role Responsibilities Undertake security Architecture reviews and work with technical architecture teams to ensure security is built into active development project’s design...

We are looking for a Senior Site Reliability Engineer to join our team delivering and supporting critical applications running on Azure. The ideal candidate will be an expert in Azure services, have a combination of SRE and DevOps skills including automation, monitoring, observability, CI/CD, incident management, and have a deep understanding of end to end application workflow. As a Senior Site Reliability Engineer, you will play a pivotal role in ensuring the reliability and performance of our applications throughout the lifecycle. Role, Responsibilities and Key Accountabilities: Investigates and resolves complex incidents escalated to the team. Runs post incident review sessions and implements fixes and improvements. Conduct service transition activities including establishing metrics to track performance, setting up monitoring, Runbook updates, executing Game Day/OAT, and support team training. Maintains services once they are live by measuring and monitoring...

Role Summary: The Principal DevSecOps Engineer is responsible for driving efficiency across the software development and release lifecycle by modernizing processes, streamlining workflows, and building a robust Continuous Integration/Continuous Deployment (CI/CD) pipeline. This role provides strategic guidance on securing, organizing, and automating existing product development workflows, and requires strong proficiency in agile methodologies and industry best practices. The ultimate goal is to enable a seamless transition from a traditional operating model to a fully integrated DevSecOps approach that enhances agility, security, and scalability across the organization. We are looking for intellectually curious individuals, passionate about the bigger picture of how technology is evolving, ready to ask difficult questions and deal with complicated scenarios. If you are a creative and a problem solver, this is the place to be as it will be assisting you to progress your...

Are you a hands-on data scientist with deep expertise in NLP and LLMs, strong Python coding skills, and a track record of deploying models to production? Do you thrive in building real-world AI solutions that are used by actual customers? If so, we’d love to talk to you! Role summary: As a Principal Data Scientist (individual contributor), you will play a hands-on role in designing, building, and deploying scalable AI solutions that go beyond prototypes and are actively used in production. You’ll work closely with collaborative teams to co-develop innovative products for financial markets and professionals. We’re looking for someone who combines deep technical expertise in NLP and LLMs , strong Python engineering skills , and real-world experience shipping and supporting models in production . You should be comfortable owning delivery timelines and ensuring that solutions meet business needs and production-grade standards. What you'll be doing: This...