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We’re looking for a senior Front End Software Engineer who can be the technical go-to person in their area, offering guidance, mentorship, and hands-on expertise. This is a chance to make a real impact across multiple products and help influence our engineering direction as we continue to grow. De

Principal Software Engineer / Tech Lead / Founding Engineer opportunity - Tech Start-Up- Remote UK wide - Up to 120k. Morson Edge are delighted to have teamed up with a Tech4Good start up on their search for their first Software Engineering hire. The client are completely open on what the title of t

Harrington Starr has partnered with a leading Global Payments Technology company who are seeking to hire a Principal Software Engineer to join their senior engineering leadership team. Provide leadership and mentorship across multiple engineering teams.

Senior Systems & Regulatory Software Engineer. Systems / Regulatory Software Engineer. You will work at the heart of a multidisciplinary engineering team, helping to.

This Principal Software Engineer role is designed for a hands-on technical leader with strong C++ and Unreal Engine expertise, working at the forefront of complex, performance-critical software delivery. The role combines advanced engineering with genuine technical authority, shaping how simulation-

This is a hands-on technical role where you'll shape the design, guide the team, and ensure successful delivery of a critical transformation project.Collaborate with a cross-functional team (including React developers) to ensure seamless integration of front-end and back-end.Build credibility throug

This is a hands-on, Principal-level Individual Contributor (IC) role designed for a technical pioneer. You will operate with significant autonomy, influencing the technical strategy for our key products and mentoring senior engineers. Mentor and guide senior and mid-level engineers on modern, sustai

Principal Software EngineerPortsmouth | Hybrid, 3 days onsite£75,000-£85,000 plus bonus and benefitsThis Principal Software Engineer role is designed for a hands-on technical leader with strong C++ and Unreal Engine expertise, working at the forefront of complex, performance-critical software deli

You will operate with significant autonomy, influencing the technical strategy for our key products and mentoring senior engineers. Mentor and guide senior and mid-level engineers on modern, sustainable development practices. You have created dashboards, defined SLOs, and used telemetry to drive eng

Principal Software Engineer Edinburgh An innovative and well-established med tech company are seeking a proven technical leader to join its R&D team basedin central Edinburgh as a Principal Software Engineer.

This is a hands-on, Principal-level Individual Contributor (IC) role designed for a technical pioneer. You will operate with significant autonomy, influencing the technical strategy for our key products and mentoring senior engineers. Mentor and guide senior and mid-level engineers on modern, sustai

As our Principal Software Engineer, you ll be a technical authority across our digital platforms, combining architectural vision with practical delivery. Mentor and influence engineers at all levels, raising the bar for technical excellence. This is a senior, hands‑on technical leadership role whe

Mentor and guide senior and mid-level engineers on modern, sustainable development practices Expertise in PHP is ideal, but deep experience with other stacks like Java/C#/. NET is transferable ~ Demonstrated ability to move beyond theory and successfully apply AI to deliver tangible solutions ~

Our Software Engineers don't just implement solutions—they discover new patterns of working with AI that. Evaluate emerging technologies and introduce innovative approaches that improve our software delivery. Represent the engineering organisation externally — at conferences, client meetings, an

Mentor and guide senior and mid-level engineers on modern, sustainable development practices Expertise in PHP is ideal, but deep experience with other stacks like Java/C#/. NET is transferable ~ Demonstrated ability to move beyond theory and successfully apply AI to deliver tangible solutions ~

Principal Software Engineer (London Only). Our pay ranges for our Principal Engineer position within London is: £92-818-£116-122 GBP. From early‑stage startups to global enterprises, we work across industries to optimize our clients’ digital products through product strategy innovation, experi

Mentor and guide senior and mid-level engineers on modern, sustainable development practices Expertise in PHP is ideal, but deep experience with other stacks like Java/C#/. NET is transferable ~ Demonstrated ability to move beyond theory and successfully apply AI to deliver tangible solutions ~

Principal Software Engineer / Developer (Rust Golang) London / WFH to £110k. As a Principal Software Engineer you will split your time between architecture, design, hands‑on coding and mentoring, team leadership and strategy. As a Principal Software Engineer / Developer you will earn a competitiv

This is a hands-on, Principal-level Individual Contributor (IC) role designed for a technical pioneer. You will operate with significant autonomy, influencing the technical strategy for our key products and mentoring senior engineers. Mentor and guide senior and mid-level engineers on modern, sustai

London – I'm HIRING a Principal Software Engineer (Full-Stack Java & React) 🏅. Connecting the best software professionals with top-tier opportunities within tech for impact businesses. Mentoring engineers and leading technical discussions.

You will work with like-minded people from business, product and engineering functions to develop and refine client journeys covering onboarding, KYC, account management and investment workflows in a secure and compliant environment. Building and deploying scalable, secure, and compliant software at

We are looking for a Principal Software Engineer who will play a defining role in shaping our platform, our teams, and our technical future. Drive a healthy engineering function, ensuring pace is balanced with the needs of engineers, towards a sustainable model. Prior CTO (at a startup), Principal E

A leading tech firm based in London seeks a Principal Software Engineer to drive the development of scalable applications.

You will have the opportunity to shape the direction of our projects while mentoring junior engineers and preparing for a future lead position. Strong background in software design patterns and architectural principles.

They’re now looking for a Principal Software Engineer to provide senior technical leadership across multiple delivery engagements and to help shape how modern software is built, evolved, and maintained. We (SR2) have partnered with this highly regarded cloud and software engineering consultancy th

Salary: Circa £65k + Up to 15% Bonus Sponsorship:**Unfortunately, we are unable to offer sponsorship for this role If you're a Principal Software Engineer, who enjoys architecting complex systems, owning technical decisions, and crafting Python‑powered solutions that make a real impac

A leading technology company is seeking a Principal Software Engineer in London to collaborate with AI researchers and bring innovative health solutions to market. The ideal candidate will have a background in software engineering, knowledge of distributed systems, and a passion for user experience.

A global technology company is looking for a talented principal engineer in Greater London. The ideal candidate will be responsible for managing complex technical problems, leading engineering teams, and developing innovative products that enhance user experience.

Member of Technical Staff - Principal Software Engineer. Build the hiring pipelines, onboarding frameworks, or software development best practices as needed to scale an engineering team around you. Bachelor’s or higher degree in Computer Science, or related technical discipline AND strong software

At least 10 years of commercial software engineering experience, with a proven track record of leading the design and delivery of large‑scale, complex, and ambiguous technical projects. Snyk is the leader in secure AI software development, helping millions of developers develop fast and stay secur

Principal Engineer – Join a profitable FinTech Scale-Up. As they continue to grow, they are looking for a Principal Engineer to lead the next phase of innovation across their most critical product. Lead the re-architecture of the team’s code, collaborating with principal engineers in other teams

A leading software development firm in London is seeking a Principal Software Engineer to lead the architectural evolution of their platform. The ideal candidate has over 12 years of software engineering experience, deep expertise in distributed systems, and exceptional leadership skills.

As a Principal Software Engineer, you will play a senior technical leadership role across Appvia’s software delivery engagements. We partner with customers across public and private sectors to reduce technical debt, improve engineering practices, and support long-term system evolution using modern

Senior Principal Software Engineer. You will interact with architects, software and data engineers, AI/ML modelers, product owners as well as other team members across R&D. Software Engineering & Application Development.

A leading software company is seeking a Principal Software Development Engineer to work on CAD/Geometry products. Applicants should have a Bachelor's in engineering or Computer Science, with over 8 years in software engineering, particularly in CAD or 3D applications. This role involves developing s

Principal Software Engineer, Load Balancer - Isovalent. Cisco Isovalent is seeking a skilled and experienced Software Engineer to develop its next generation Load Balancer leveraging the technology developed with Cilium. Collaborate across engineering, product, and customer teams to align technical

As a Principal Engineer in the Boost team, you’ll be part of a group of principal engineers who champion technical excellence. Embed in mission teams to solve hard tech problems, coaching engineers hands‑on to instill our core engineering principles. Introduction to loveholidays Engineering with

As a Principal Software Engineer, your world is being embedded or supporting the teams where the hardest work is happening at any given time, helping them deliver good quality software with predictable velocity, helping them break through when they’re getting blocked, helping them get better over

You would be joining a squad of Principal engineers with different expertise that serves as a centre of excellence to the 16+ engineering teams in the wider engineering function. If you are a Front End-leaning Principal engineer who wants to combine your experience in web and AI to help unlock other

As a Principal Software Engineer, you elevate those around you by supercharging delivery teams, mentoring others, and embedding technical excellence at every level. We’re looking for a Principal Software Engineer to join our digital product delivery function. The Principal Software Engineer is a s

A leading technology recruitment agency is seeking a remote-first Principal Engineer for a key role with a client known for their high-performance software solutions. The ideal candidate will have over 10 years of software engineering experience, expertise in C# or Java, and a solid grasp of cloud t

A growing consultancy in the UK is seeking a Principal Software Engineer to lead the design of complex digital twins and provide strategic advice to key defense stakeholders. The ideal candidate will have over 7 years of software engineering experience, strong proficiency in C++ and Unreal Engine 5,

Principal Software Engineer | London | £120k to £160k + benefits | Python. Taking real ownership over the software you build. Engineering standards are high, but speed still matters.

As a Principal Software Engineer, you will play a senior technical leadership role across Appvia’s software delivery engagements. We partner with customers across public and private sectors to reduce technical debt, improve engineering practices, and support long-term system evolution using modern

MS in Engineering or a related discipline or equivalent combination of education. We are looking for an experienced Senior C/C++ modeling Engineer to join our hardware team. In this role, you will collaborate with SOC architects, design, and verification engineers to implement and model the design f

Do you have a passion for making systems run as efficiently as possible? Join our innovative team.Our Cloud Technology Group’s Compute division, formerly Linode, consists of collaborative, inclusive, and creative teams that develop applications and services to empower our customers.Our mission is

Collaborate with engineers, product managers, and stakeholders to deliver reliable, scalable features. Degree in Computer Science, Engineering, or equivalent experience. Interest in financial services or experience in B2B software is advantageous.

Join the Software Engineering team where you will play a crucial role in developing, enhancing, and transforming our investment reporting platform, Serpentine, a web application written using Python and Django. Architect and implement new software solutions, leading the overall structural design and