Are you looking for a career move that will put you at the heart of a global financial institution? We are seeking an exceptionally skilled Principal AI Software Engineer to architect and implement robust, scalable backend systems that power our advanced AI tools and services. This hands-on individual contributor role demands expert knowledge of Python fundamentals, a profound understanding of software design principles, architectural patterns, and an unwavering commitment to writing clean, maintainable, and production-grade code that minimizes technical debt. Proficiency in FastAPI is a must. Prior hands-on expertise in Generative AI development and its associated frameworks is required. Hands-on experience and in-depth understanding of C++ is a significant bonus. By Joining Citi, you will become part of a global organisation whose mission is to serve as a trusted partner to our clients by responsibly providing financial services that enable growth and economic progress....

Why Citi   Citi, the leading global bank, has approximately 200 million customer accounts and does business in more than 160 countries and jurisdictions. Citi provides consumers, corporations, governments, and institutions with a broad range of financial products and services, including consumer banking and credit, corporate and investment banking, securities brokerage, transaction services, and wealth management.  As a bank with a brain and a soul, Citi creates economic value that is systemically responsible and in our clients’ best interests. As a financial institution that touches every region of the world and every sector that shapes your daily life, our Enterprise Operations & Technology teams are charged with a mission that rivals any large tech company. Our technology solutions are the foundations of everything we do from keeping the bank safe, managing global resources, and providing the technical tools our workers need to be successful to designing our digital...

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech. The User Experience Senior Lead Analyst is a senior level principal role, acting as a thought leader in the research, analysis and design of digital products and systems. User Experience partners with Product and Technology colleagues to create innovative and intuitive digital products that deliver...

If you’d like to be considered for this opportunity we encourage you to apply promptly to avoid disappointment as if applications are high the role will close before the closing date given. Principal Safety Assessment Specialist (R29765) Closing Date: 20th May 2026 Location: RG7 4PR , located between Reading and Basingstoke, with free onsite parking . Due to the classified nature of the work involved, there are limited opportunities to work from home in this role. It is anticipated that the successful candidate will spend the majority of their time working on site at AWE Aldermaston. Package: £59,480 - £94,020 per annum ( depending on your suitability, qualifications, and level of experience) A relocation package may be available (terms and conditions apply). Working pattern: AWE operates a 9-day working fortnight. We will consider flexible working requests so that your work may fit in with your lifestyle. Just let us know your...

Location: Templecombe, United Kingdom Thales people provide armed forces customers with operational advantage at every decisive moment throughout the mission. Defence and armed forces customers rely on us to deliver the full range of defence mission systems solutions at land, sea, and air. Our platforms extend across the battlespace including Above and Sonar, Electronic Combat, and Intelligence, Surveillance and Reconnaissance systems. Together we offer fantastic opportunities for committed employees to learn and develop their career with us. At Thales UK, we research, develop, and supply technology and services that impact the lives of millions of people each day to make life better, and keep us safer. We innovate across the major industries of Aerospace, Defence, Security and Space. Your health and well-being matters to us and that’s why we offer you the flexibility to do what’s important to you; whether that’s part time hours, job sharing, home working, or the ability to...

Location: Crawley, United Kingdom Thales is a global technology leader with more than 83,000 employees on five continents. With over 7,500 people in the UK, operating across defence, space, aerospace, and digital security, we help build a future we can all trust. Thales supports the security and stability of our nation by providing extraordinary technology to our customers, as well as delivering social value to the UK with our products and services. Principal Systems Engineer - Electronic Warfare  Crawley - Hybrid Thales Intelligence, Surveillance and Reconnaissance (ISR) UK is a principal supplier of Unmanned Aerial Systems (UAS), Electronic Warfare (EW) and Radar equipment to the UK armed forces, as well as an exporter of these capabilities worldwide. We are looking for senior engineers with the skills and experience to enhance our Electronic Warfare portfolio, delivering cutting edge products including: Digital Radar Electronic Support Measures (RESM) that...

Location: Crawley, United Kingdom Thales is a global technology leader with more than 83,000 employees on five continents. With over 7,500 people in the UK, operating across defence, space, aerospace, and digital security, we help build a future we can all trust. Thales supports the security and stability of our nation by providing extraordinary technology to our customers, as well as delivering social value to the UK with our products and services. Senior Systems Engineer Crawley - Hybrid Thales Intelligence, Surveillance and Reconnaissance (ISR) UK is a principal supplier of Electronic Warfare (EW), Radar and Uncrewed Aerial Systems (UAS) equipment to the UK armed forces, as well as an exporter of these capabilities worldwide. We are recruiting for a Senior Systems Engineer to work on projects covering next generation Electronic Warfare (EW), Radar or UAS solutions. This Systems Engineer role performs a subset of all the engineering activities required to develop a...

Location: Crawley, United Kingdom Thales is a global technology leader with more than 83,000 employees on five continents. With over 7,500 people in the UK, operating across defence, space, aerospace, and digital security, we help build a future we can all trust. Thales supports the security and stability of our nation by providing extraordinary technology to our customers, as well as delivering social value to the UK with our products and services. Our work is organised into two portfolios that guide strategic growth in Secure Communication and Protection. The Land Communications team focuses on tactical radio and electronic countermeasures for UK and global markets. Our Security and Naval Communications team draws on over 100 years of partnership with the Royal Navy, delivering an evolving portfolio of integrated voice and data systems that support resilient, mission‑ready communication.  We are looking for a Senior Principal Systems Engineer to lead the delivery of...

Location: Glasgow, United Kingdom Thales people provide armed forces customers with operational advantage at every decisive moment throughout the mission. Defence and armed forces customers rely on us to deliver the full range of defence mission systems solutions at land, sea, and air. Our platforms extend across the battlespace including Above and Sonar, Electronic Combat, and Intelligence, Surveillance and Reconnaissance systems. Together we offer fantastic opportunities for committed employees to learn and develop their career with us. At Thales UK, we research, develop, and supply technology and services that impact the lives of millions of people each day to make life better, and keep us safer. We innovate across the major industries of Aerospace, Defence, Security and Space. Your health and well-being matters to us and that’s why we offer you the flexibility to do what’s important to you; whether that’s part time hours, job sharing, home working, or the ability to flex...

Principal Engineer (Bristol) AND Introduction At AND, we accelerate the development of digital capabilities. In practice, that means helping ambitious leaders and organisations build the teams, products, processes and even operational structures they need to close the digital skills gap within their organisation today, so that they thrive tomorrow. Clients rely on our experience, agility and craft skills across tech and business strategy, software development and product management to address some of the toughest challenges facing their businesses. We bring aboard thinkers, tinkerers, passionate software craftspeople and inspiring technologists to help us solve these challenges. Together, we’re united by a sense of pragmatism, purpose and a deeply-held belief that digital products and technology alone won’t transform a business or save the world: it’s the people that count. About You As a Principal Engineer for a club of over 80 people (approx. 30-40 developers of...

Are you looking for a career move that will put you at the heart of a global financial institution? Then bring your skills in analysis, problem solving, and communication to Citi's Finance Technology Transformation program. By Joining Citi, you will become part of a global organisation whose mission is to serve as a trusted partner to our clients by responsibly providing financial services that enable growth and economic progress. Team/Role Overview The Finance Technology Transformation program is focused on migrating existing Citi-coded platforms to Oracle SaaS, impacting accounting engines, end-to-end data flow from Front Office to BA AR, Ledger Balances, and enterprise downstream consumption. The Lead Solution Architect will be responsible for leading the design and implementation of end-to-end architectural solutions for specific domains within this program. This role will translate strategic architectural direction into detailed designs, guide development teams, and...

Citi's Markets business is one of the world's leading global franchises for sales and trading across fixed income, currencies, commodities, and equities. Within this, Citi's Cash Equities platform operates across major financial centres globally, providing institutional clients with sophisticated market access through a combination of high-touch coverage, programme trading, and advanced electronic execution capabilities. Citigroup Global Markets Limited (CGML), Citi's international broker-dealer headquartered in London, acts as a principal hub for equities activity across EMEA and plays a central role in the firm's ambition to grow its prime and execution footprint with the world's leading institutional investors. This Vice President role sits within Citi's Cash Equities Execution team in London and is focused on the ownership, management, and strategic development of Citi's electronic execution product suite and platform infrastructure. The individual will serve as the...

Location: Crawley, United Kingdom Thales is a global technology leader with more than 83,000 employees on five continents. With over 7,500 people in the UK, operating across defence, space, aerospace, and digital security, we help build a future we can all trust. Thales supports the security and stability of our nation by providing extraordinary technology to our customers, as well as delivering social value to the UK with our products and services. Algorithm Engineer (Radar and Electronic Warfare) Crawley – Hybrid (Relocation support can be provided) Thales Intelligence, Surveillance and Reconnaissance (ISR) UK is a principal supplier of Electronic Warfare (EW), Radar and Uncrewed Aerial Systems (UAS) equipment to the UK armed forces, as well as an exporter of these capabilities worldwide. We’re growing and we are looking for an ambitious Algorithm Engineer to join us on the journey. Algorithm Engineers design, implement and improve algorithms used in critical...

Location: Crawley, United Kingdom Thales is a global technology leader with more than 83,000 employees on five continents. With over 7,500 people in the UK, operating across defence, space, aerospace, and digital security, we help build a future we can all trust. Thales supports the security and stability of our nation by providing extraordinary technology to our customers, as well as delivering social value to the UK with our products and services. Electronic Countermeasures System Architect Crawley – Relocation support can be provided Thales Intelligence, Surveillance and Reconnaissance (ISR) UK is a principal supplier of UAS, EW and Radar equipment to the UK armed forces, as well as an exporter of these capabilities worldwide. We are seeking an Electronic Countermeasures (ECM) System Architect with experience of working within the field of Electronic Warfare, or related fields such as RESM, CESM, ECM or similar. You will have prior knowledge of the key...

Location: Belfast, United Kingdom Thales is a global technology leader with more than 83,000 employees on five continents. With over 7,500 people in the UK, operating across defence, space, aerospace, and digital security, we help build a future we can all trust. Thales supports the security and stability of our nation by providing extraordinary technology to our customers, as well as delivering social value to the UK with our products and services. Principal Electronics Engineer Belfast – Hybrid Who We Are Thales Integrated Airspace-protection Systems (IAS) UK designs and manufactures a range of cutting-edge technologies ranging from air surveillance and mission planning systems to missiles. The company specialises in lightweight missiles and the integration of weapon systems into various platforms along with the systems to manage and exploit critical mission planning and air surveillance data. Belfast is also home to the Thales’s global Space Electric...

Location: Templecombe, United Kingdom Thales is a global technology leader with more than 83,000 employees on five continents. With over 7,500 people in the UK, operating across defence, space, aerospace, and digital security, we help build a future we can all trust. Thales supports the security and stability of our nation by providing extraordinary technology to our customers, as well as delivering social value to the UK with our products and services. Under Water Systems (UWS) Our purpose is to be the leading provider of underwater sensors and decision superiority, helping navies across the world keep our friends, families and all of us safe. We cover four sectors: Mine Counter Measures, Anti-Submarine warfare, Services and Future Capabilities. Primary Purpose of the Role: The Communications and Acoustic Products (CAP) team support the development and maintenance of RF communications systems and products including antennas, processing and distribution equipment,...