1 to 25 of 46 Principal Developer Jobs in London

Principal Software Developer - Welsh Government (Grade 6) Location: Pan - Wales Working Pattern: Full-Time/Flexible Salary: £73,978 to £84,882(+ DDaT Allowance) Yolk Recruitment is proud to be the exclusive recruitment partner to the Welsh Government. We're working together to deliver modern, impactful digital … who want to be part of this mission. About the Role Join the Welsh Government's Digital, Data and Technology (DDaT) team as a Principal Software Developer . The Principal Developer and their team will lead on establishing the development strategy and approach, choosing the right … procurement strategies, consistent with business needs Development process optimisation - You can lead and develop a team of experts to deliver service improvements The successful Principal Software Developer will be rewarded with the following: Basic salary of £61,235-£72,328(+ DDaT Allowance)+ incremental pay progression Civil More ❯

Lead/Principal Software Developer - Fully Remote Lead/Principal Software Developer - Fully Remote This range is provided by Oho Group Ltd. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range Direct message the … job poster from Oho Group Ltd Lead/Principal Software Developer - Fully Remote Lead/Principal Software Developer needed for an early-stage Start-Up at a crucial part of its journey. Looking for someone with 3-5 years of experience as a Full Stack Software … Developer to come in and craft responsive web apps and robust APIs with an eye for performance, security, and user experience. You'll be excited by the idea of working for an early stage Start-Up, trusted to take responsibility from a remote position and have top level Python More ❯

Principal Developer, FX Matching Applications ABOUT US: 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 dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep … and innovation, LSEG is a place where everyone can grow, develop and fulfil your potential with meaningful careers. ROLE SUMMARY: We are seeking a Principal Developer with a strong Java background and proven exposure to C++ to architect, design, and build our flagship FX Maching Venue. This role More ❯

Social network you want to login/join with: Lead Software Engineer, Principal Developer, Terraform, AZURE, C# 100% Remote UK Inside IR35, London Client: Experis UK Location: London, United Kingdom Job Category: Other EU work permit required: Yes Job Views: 1 Posted: 25.05.2025 Expiry Date: 09.07.2025 Job Description … Job Title: Lead Software Engineer, Principal Developer, Terraform, AZURE, C# Location: 100% Remote, UK Inside IR35 We are seeking an experienced Lead Software Engineer/Principal Developer with expertise in Terraform , Azure , and C# to join our team. This role is remote, based in the UK More ❯

Social network you want to login/join with: Senior Python Developer, Principal BackEnd Developer, Flask, Up to £90k + Benefits, London Client: Experis UK Location: London, United Kingdom Job Category: Other EU work permit required: Yes Job Views: 4 Posted: 16.05.2025 Expiry Date: 30.06.2025 Job Description More ❯

Principal Developer - React, Typescript, JavaScript, Agile, Cloud, Sought by Leading liquidity and data solutions specialist - Permanent - Hybrid - London Salary £95,000 - £125,000 Requirements Proven experience as a senior/principal engineer in high-performance trading systems or similar domains. React 16/17+, Typescript4/5+ More ❯

Social network you want to login/join with: Lead/Principal Software Developer - Fully Remote, london (city of london) col-narrow-left Client: Oho Group Ltd Location: london (city of london), United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views … Posted: 06.06.2025 Expiry Date: 21.07.2025 col-wide Job Description: Lead/Principal Software Developer - Fully Remote Lead/Principal Software Developer needed for an early-stage Start-Up at a crucial part of its journey. Looking for someone with 3-5 years of experience as a … Full Stack Software Developer to come in and craft responsive web apps and robust APIs with an eye for performance, security, and user experience. You'll be excited by the idea of working for an early stage Start-Up, trusted to take responsibility from a remote position and have More ❯

Principal Java Developer – Major Financial Institution London/Hybrid | Contract | £700-£800 inside IR35 (gross umbrella rate) We’re working with a major financial institution looking to scale out its engineering function with a Principal Java Developer to lead critical systems work. This is a hands … Bonus points for: Angular, React or frontend exposure Familiarity with Snowflake or backend SQL variants This is a great opportunity for an experienced Java Developer to join a prestigious financial player. If you’re someone who thrives in complex environments and enjoys technical leadership alongside delivery, apply now. More ❯

Principal Java Developer – Major Financial Institution London/Hybrid | Contract | £700-£800 inside IR35 (gross umbrella rate) We’re working with a major financial institution looking to scale out its engineering function with a Principal Java Developer to lead critical systems work. This is a hands … Bonus points for: Angular, React or frontend exposure Familiarity with Snowflake or backend SQL variants This is a great opportunity for an experienced Java Developer to join a prestigious financial player. If you’re someone who thrives in complex environments and enjoys technical leadership alongside delivery, apply now. More ❯

Principal Java Developer – Major Financial Institution London/Hybrid | Contract | £700-£800 inside IR35 (gross umbrella rate) We’re working with a major financial institution looking to scale out its engineering function with a Principal Java Developer to lead critical systems work. This is a hands … Bonus points for: Angular, React or frontend exposure Familiarity with Snowflake or backend SQL variants This is a great opportunity for an experienced Java Developer to join a prestigious financial player. If you’re someone who thrives in complex environments and enjoys technical leadership alongside delivery, apply now. More ❯

Principal Java Developer – Major Financial Institution London/Hybrid | Contract | £700-£800 inside IR35 (gross umbrella rate) We’re working with a major financial institution looking to scale out its engineering function with a Principal Java Developer to lead critical systems work. This is a hands … Bonus points for: Angular, React or frontend exposure Familiarity with Snowflake or backend SQL variants This is a great opportunity for an experienced Java Developer to join a prestigious financial player. If you’re someone who thrives in complex environments and enjoys technical leadership alongside delivery, apply now. More ❯

Principal Java Developer – Major Financial Institution London/Hybrid | Contract | £700-£800 inside IR35 (gross umbrella rate) We’re working with a major financial institution looking to scale out its engineering function with a Principal Java Developer to lead critical systems work. This is a hands … Bonus points for: Angular, React or frontend exposure Familiarity with Snowflake or backend SQL variants This is a great opportunity for an experienced Java Developer to join a prestigious financial player. If you’re someone who thrives in complex environments and enjoys technical leadership alongside delivery, apply now. More ❯

Lead/Principal Software Developer - Fully Remote Lead/Principal Software Developer needed for an early-stage Start-Up at a crucial part of its journey. Looking for someone with 3-5 years of experience as a Full Stack Software Developer to come in and … take responsibility from a remote position and have top level Python and Typescript skills. Currently interviewing - please send CV for immediate review! Lead/Principal Software Developer - Fully Remote More ❯

Lead/Principal Software Developer - Fully Remote Lead/Principal Software Developer needed for an early-stage Start-Up at a crucial part of its journey. Looking for someone with 3-5 years of experience as a Full Stack Software Developer to come in and … take responsibility from a remote position and have top level Python and Typescript skills. Currently interviewing - please send CV for immediate review! Lead/Principal Software Developer - Fully Remote More ❯

Lead/Principal Software Developer - Fully Remote Lead/Principal Software Developer needed for an early-stage Start-Up at a crucial part of its journey. Looking for someone with 3-5 years of experience as a Full Stack Software Developer to come in and … take responsibility from a remote position and have top level Python and Typescript skills. Currently interviewing - please send CV for immediate review! Lead/Principal Software Developer - Fully Remote More ❯

Lead/Principal Software Developer - Fully Remote Lead/Principal Software Developer needed for an early-stage Start-Up at a crucial part of its journey. Looking for someone with 3-5 years of experience as a Full Stack Software Developer to come in and … take responsibility from a remote position and have top level Python and Typescript skills. Currently interviewing - please send CV for immediate review! Lead/Principal Software Developer - Fully Remote More ❯

Lead/Principal Software Developer - Fully Remote Lead/Principal Software Developer needed for an early-stage Start-Up at a crucial part of its journey. Looking for someone with 3-5 years of experience as a Full Stack Software Developer to come in and … take responsibility from a remote position and have top level Python and Typescript skills. Currently interviewing - please send CV for immediate review! Lead/Principal Software Developer - Fully Remote More ❯

Lead/Principal Software Developer - Fully Remote Lead/Principal Software Developer needed for an early-stage Start-Up at a crucial part of its journey. Looking for someone with 3-5 years of experience as a Full Stack Software Developer to come in and … take responsibility from a remote position and have top level Python and Typescript skills. Currently interviewing - please send CV for immediate review! Lead/Principal Software Developer - Fully Remote More ❯

Lead/Principal Software Developer - Fully Remote Lead/Principal Software Developer needed for an early-stage Start-Up at a crucial part of its journey. Looking for someone with 3-5 years of experience as a Full Stack Software Developer to come in and … take responsibility from a remote position and have top level Python and Typescript skills. Currently interviewing - please send CV for immediate review! Lead/Principal Software Developer - Fully Remote More ❯

Lead/Principal Software Developer - Fully Remote Lead/Principal Software Developer needed for an early-stage Start-Up at a crucial part of its journey. Looking for someone with 3-5 years of experience as a Full Stack Software Developer to come in and … take responsibility from a remote position and have top level Python and Typescript skills. Currently interviewing - please send CV for immediate review! Lead/Principal Software Developer - Fully Remote More ❯

Lead/Principal Software Developer - Fully Remote, United Kingdom Location: United Kingdom Job Category: Internet EU work permit required: Yes Job Reference: GG-5 Job Views: 1 Posted: 19.05.2025 Expiry Date: 03.07.2025 Job Description: Lead/Principal Software Developer - Fully Remote We are seeking a Lead …/Principal Software Developer for an early-stage Start-Up at a crucial stage of its growth. The ideal candidate will have 3-5 years of experience as a Full Stack Software Developer, with expertise in crafting responsive web applications and robust APIs, emphasizing performance, security, and More ❯

Social network you want to login/join with: Lead/Principal Software Developer - Fully Remote, London (City of London) Client: Oho Group Ltd Location: London (City of London), United Kingdom Job Category: Other EU work permit required: Yes Job Views: 4 Posted: 12.05.2025 Expiry Date: 26.06.2025 Job … Description: Lead/Principal Software Developer - Fully Remote Lead/Principal Software Developer needed for an early-stage Start-Up at a crucial part of its journey. We are looking for someone with 3-5 years of experience as a Full Stack Software Developer to More ❯

Social network you want to login/join with: Principal Android Developer, west london col-narrow-left Client: Location: west london, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 2 Posted: 06.06.2025 Expiry Date: 21.07.2025 col-wide Job Description: Principal Android Developer - on site in Central Manchester Based in Manchester –Onsite working 5 days a week in the office Salary up to £80,000 – 25 days holiday plus bank holiday, birthday off, pension, and other benefits. WHO ARE WE? We create software which provides workplaces with software for … this. Due to our growth in recent years and our plans for the future, we are looking to bring on an experienced Senior Android Developer to be a real driving force behind the upcoming success and to allow us to work to a high standard. We are looking for More ❯

Social network you want to login/join with: Principal Android Developer, south west london col-narrow-left Client: Location: south west london, United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 2 Posted: 06.06.2025 Expiry Date: 21.07.2025 col-wide Job Description … Principal Android Developer - on site in Central Manchester Based in Manchester –Onsite working 5 days a week in the office Salary up to £80,000 – 25 days holiday plus bank holiday, birthday off, pension, and other benefits. WHO ARE WE? We create software which provides workplaces with software … this. Due to our growth in recent years and our plans for the future, we are looking to bring on an experienced Senior Android Developer to be a real driving force behind the upcoming success and to allow us to work to a high standard. We are looking for More ❯

Principal C# Software Engineer, Hands-on with excellent people skills including leading, mentoring, training, coaching, etc. , Mainly back end C#, .net, SQL - but good front end skills required too. Home Based c £ 80000 - 95000 + benefits My client is a software product company that build an innovative SaaS product … for the utilities market. As they continue to grow they are looking for a hands-on Principal Software Engineer with a combination of strong C#/.net technical skills and excellent people management skills that will include coaching, mentoring, conflict resolution, etc, etc. Utilising agile methodologies you will lead … the team Mentoring, coaching, training, conflict resolution, etc Lead technical decisions Experience Required - Excellent hands on knowledge of C#/.net working at a Principal level. Excellent communication skills Proven ability of designing distributed systems. An understanding of Cloud technologies (AWS or Azure) People management - mentoring, coaching, conflict resolution More ❯