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12 software engineer jobs found in London

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London software engineer £700 and up
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Outside Spy
Mar 17, 2026
Duration not stated
Senior Software Engineer at Owen Thomas | Pending B Corp™, London Area, £700-£800 per day
£700 - £800 per day
Outside Spy London Area, United Kingdom
Outside IR35 Contract - Senior/Lead Kotlin Engineer – Backend / Distributed Systems - £700-800/day Tier-One Global Investment Bank | London A tier-one global investment bank is expanding a new engineering group responsible for building modern digital financial platforms from the ground up. This team operates with the autonomy and pace of a start-up, backed by the scale and resources of one of the world’s largest financial institutions. Engineers work in small, highly collaborative teams designing and operating systems that power critical financial services used by millions of customers. This is a 6-month rolling contract, on a programme of work estimated to last 2-3 years. We’re looking for experienced Senior and Lead backend engineers who specialise in server-side Kotlin on the JVM , with a strong interest in building reliable distributed systems and scalable cloud platforms. You’ll help design and build high-performance backend services, working closely...
Outside Spy
Mar 12, 2026
Duration not stated
Senior Software Engineer at Owen Thomas | Pending B Corp™, London Area, £700-£800 per day
£700 - £800 per day
Outside Spy London Area, United Kingdom
Outside IR35 Contract - Senior/Lead Kotlin Engineer – Backend / Distributed Systems - £700-800/day Tier-One Global Investment Bank | London A tier-one global investment bank is expanding a new engineering group responsible for building modern digital financial platforms from the ground up. This team operates with the autonomy and pace of a start-up, backed by the scale and resources of one of the world’s largest financial institutions. Engineers work in small, highly collaborative teams designing and operating systems that power critical financial services used by millions of customers. This is a 6-month rolling contract, on a programme of work estimated to last 2-3 years. We’re looking for experienced Senior and Lead backend engineers who specialise in server-side Kotlin on the JVM , with a strong interest in building reliable distributed systems and scalable cloud platforms. You’ll help design and build high-performance backend services, working closely...
Outside Spy
Mar 11, 2026
Duration not stated
Software Engineer at CipherTek Recruitment, City Of London, £800 per day
£800 per day
Outside Spy City Of London, England, United Kingdom
Job Summary: Front Office C# Risk & Valuations Developer (Outside IR35) Role : Senior C# Risk & Valutaions Developer Location : Remote (with occasional travel to London City) Rate : Upto £800 per day IR35 Status : Outside IR35 Duration : 12 months + Responsibilities : Develop and enhance Front Office (FO) risk and P&L functionality in a core risk system. Investigate risk and P&L issues raised by users. Collaborate with the quant group and FO users to gather requirements. Produce user and technical documentation. Ensure system stability and supportability. Essential Skills : Very strong C# development, including very strong multi-threading. Proficiency in SQL Server. Good knowledge of derivatives pricing across asset classes. Understanding of risk management and Greeks. Experience with distributed systems. Strong mathematical background. Familiarity with complex Excel pricing sheets Python and Azure is a plus. Ideal...
Outside Spy
Mar 18, 2026
6 Months or more
C# Developer at Lorien, London, 6 Months, £750-£800 per day
£750 - £800 per day
Outside Spy London, UK
Senior C# Developer - Commodities Trading - Outside IR35 Exciting opportunity for an experienced senior developer to build on their experience in Commodities or similar trading development role in this successful Commodities Trading company. £750 - 800 per day Outside IR35 The Senior C# Developer will have significant prior experience as a Senior Software Engineer/Senior Developer working as C# Developer in a Commodities trading environment where they will have gained knowledge of the full trade life cycle and feel comfortable speaking directly to traders and senior stakeholders in the business as well as senior technical colleagues such as architects. Central London location, with Hybrid working expected. Very strong core skills in C# are expected Good knowledge of Commodities Trading is also required. Please apply now if your curious to learn more, for a confidential discussion about the role and company Guidant, Carbon60, Lorien & SRG - The Impellam Group...
Outside Spy
Mar 10, 2026
6 Months or more
C# Developer at Lorien, London, 6 Months, £750-£800 per day
£750 - £800 per day
Outside Spy London, UK
Senior C# Developer - Commodities Trading - Outside IR35 Exciting opportunity for an experienced senior developer to build on their experience in Commodities or similar trading development role in this successful Commodities Trading company. £750 - 800 per day Outside IR35 The Senior C# Developer will have significant prior experience as a Senior Software Engineer/Senior Developer working as C# Developer in a Commodities trading environment where they will have gained knowledge of the full trade life cycle and feel comfortable speaking directly to traders and senior stakeholders in the business as well as senior technical colleagues such as architects. Central London location, with Hybrid working expected. Very strong core skills in C# are expected Good knowledge of Commodities Trading is also required. Please apply now if your curious to learn more, for a confidential discussion about the role and company Guidant, Carbon60, Lorien & SRG - The Impellam Group...
Outside Spy
Mar 18, 2026
up to 6 Months
IT Applications Manager at Context Recruitment, London, 3 Months, £650-£700 per day
£650 - £700 per day
Outside Spy London, UK
IT Applications Manager - Central London £650 - £700 p/d (outside IR35) - 3 month initial term Well-established and highly profitable construction engineering business is seeking an experienced IT Applications Manager to join them on a permanent basis. This is a critical leadership role within an organisation undergoing significant digital transformation, with ambitious growth and acquisition plans driving demand for scalable, standardised and efficient business applications. Reporting into the Head of IT, you will lead the delivery, governance and optimisation of business applications across the enterprise. This role blends strategic oversight, hands-on expertise with modern low-code/no-code platforms and direct leadership of a multidisciplinary applications team. The IT Applications Manager will oversee a suite of core enterprise systems, including but not limited to: Workday, UKG (Kronos), COINS, SharePoint, Snowflake, Autodesk Construction Cloud, Pro-Sapien, Primavera P6...
Outside Spy
Mar 17, 2026
Solution Engineer - London - FINTECH at Adaptive Financial Consulting, London, to £900 per day Outside IR35
£800 - £900 per day
Outside Spy London, UK
WE ARE: At Adaptive, we are a financial consulting firm that partners with capital, commodity, and digital market participants. We value differentiation through technology. Our experienced teams design and deliver complex front-office technology solutions using our proven accelerators to create long-term competitive advantage. Our clients include the world's leading investment banks, investment managers, fintech and capital market service providers. With a global reach with offices in London, New York, Barcelona, Manila and Montreal, we have a proven track record of delivering powerful, elegant and intuitive trading technology solutions. We are now looking for Solution Engineer services for  an initial 6 month contract. Skills Required: Exceptional technical skills and able to solve complex problems as part of a team Experience building solutions in the capital markets domain Able to build strong relationships easily with Adaptive team and end...
Outside Spy
Mar 10, 2026
Duration not stated
IT Applications Manager at Context Recruitment, London, £650 to £700 per Day
£650 - £700 per day
Outside Spy London, UK
IT Applications Manager - Central London £650 - £700 p/d (outside IR35) - 3 month initial term Well-established and highly profitable construction engineering business is seeking an experienced IT Applications Manager to join them on a permanent basis. This is a critical leadership role within an organisation undergoing significant digital transformation, with ambitious growth and acquisition plans driving demand for scalable, standardised and efficient business applications. Reporting into the Head of IT, you will lead the delivery, governance and optimisation of business applications across the enterprise. This role blends strategic oversight, hands-on expertise with modern low-code/no-code platforms and direct leadership of a multidisciplinary applications team. The IT Applications Manager will oversee a suite of core enterprise systems, including but not limited to: Workday, UKG (Kronos), COINS, SharePoint, Snowflake, Autodesk Construction Cloud, Pro-Sapien,...
Outside Spy
Mar 10, 2026
Duration not stated
IT Applications Manager at Context Recruitment, London Area, £650-£700 per day
£650 - £700 per day
Outside Spy London Area, United Kingdom
IT Applications Manager - Central London (hybrid) £650 - £700 p/d (outside IR35) 3 month initial term, likely to extend Well-established and highly profitable construction engineering business is seeking an experienced IT Applications Manager to join them on a permanent basis. This is a critical leadership role within an organisation undergoing significant digital transformation, with ambitious growth and acquisition plans driving demand for scalable, standardised and efficient business applications. Reporting into the Head of IT, you will lead the delivery, governance and optimisation of business applications across the enterprise. This role blends strategic oversight, hands-on expertise with modern low-code/no-code platforms and direct leadership of a multidisciplinary applications team. The IT Applications Manager will oversee a suite of core enterprise systems, including but not limited to: Workday, UKG (Kronos), COINS, SharePoint, Snowflake, Autodesk...
Outside Spy
Mar 10, 2026
up to 6 Months
IT Applications Manager at Context Recruitment, London, 3 Months, £650-£700 per day
£650 - £700 per day
Outside Spy London, UK
IT Applications Manager - Central London £650 - £700 p/d (outside IR35) - 3 month initial term Well-established and highly profitable construction engineering business is seeking an experienced IT Applications Manager to join them on a permanent basis. This is a critical leadership role within an organisation undergoing significant digital transformation, with ambitious growth and acquisition plans driving demand for scalable, standardised and efficient business applications. Reporting into the Head of IT, you will lead the delivery, governance and optimisation of business applications across the enterprise. This role blends strategic oversight, hands-on expertise with modern low-code/no-code platforms and direct leadership of a multidisciplinary applications team. The IT Applications Manager will oversee a suite of core enterprise systems, including but not limited to: Workday, UKG (Kronos), COINS, SharePoint, Snowflake, Autodesk Construction Cloud, Pro-Sapien, Primavera P6...
Outside Spy
Mar 11, 2026
Duration not stated
Tech Lead at IntecSelect, Tower of London, £650-£750 per day
£650 - £750 per day
Outside Spy Tower of London, UK
Tech Lead - Python/TypeScript/C#/React/Azure £650-£750 per day | Outside IR35 | 6 Month Contract | Remote (Occasional London Travel) I'm currently working with a leading financial services technology consultancy that is looking to bring in an experienced Tech Lead to support the delivery of modern software solutions within the pensions and investment space. This is a hands-on leadership role, splitting your time between full-stack engineering and leading a small team of senior developers. The role offers the opportunity to work on complex platforms within a highly collaborative environment while helping shape modern engineering practices including AI-assisted and agentic development workflows. The role You will lead a team of four experienced engineers while remaining actively involved in the development process. Alongside technical leadership, you will play a key role in delivery coordination, Agile ceremonies, and stakeholder engagement. You will also act as a key...
Outside Spy
Mar 10, 2026
Duration not stated
Tech Lead at Intec Select Ltd, Greater London, £650 to £750 per Day
£650 - £750 per day
Outside Spy Greater London, UK
Tech Lead – Python / TypeScript / C# / React / Azure £650–£750 per day | Outside IR35 | 6 Month Contract | Remote (Occasional London Travel) I’m currently working with a leading financial services technology consultancy that is looking to bring in an experienced Tech Lead to support the delivery of modern software solutions within the pensions and investment space. This is a hands-on leadership role, splitting your time between full-stack engineering and leading a small team of senior developers. The role offers the opportunity to work on complex platforms within a highly collaborative environment while helping shape modern engineering practices including AI-assisted and agentic development workflows. The role You will lead a team of four experienced engineers while remaining actively involved in the development process. Alongside technical leadership, you will play a key role in delivery coordination, Agile ceremonies, and stakeholder engagement. You will also act as a...
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