Infrastructure Software Engineer

Join Harmonic as an Infrastructure Software Engineer and become a key player in our innovative tech team. You will design, develop, and maintain infrastructure software that is critical to our company's success. If you are passionate about building scalable systems and eager to work in a dynamic environment, we would love to meet you!

Role overview The Senior Software Engineer I at Runna will play a key part in shaping how users interact with the company’s products. The work centers on designing, developing, and maintaining applications that support a strong user experience. Expect to take a hands-on approach, working closely with colleagues from different teams to deliver solutions that scale and perform reliably. Location This role is based at the Runna office in London.

Join us at Orbital as we redefine real estate transactions to be smarter, faster, and seamless. As the largest asset class globally, real estate is still hindered by outdated legal processes that are slow and manual. Lawyers face the daunting task of meticulously reviewing lengthy documents while clients demand quicker, more transparent due diligence. Enter Orbital Copilot, the AI-powered assistant tailored specifically for commercial real estate law. Built in collaboration with experienced real estate attorneys, it enhances complex due diligence processes by up to 70%, all while ensuring legal-grade accuracy. With a recent funding boost of $60 million in Series B, we are poised for rapid expansion across the UK and US. We are proud to be partnered with leading firms like Goodwin and BCLP, empowering legal teams to focus on their core competencies: exercising sharp legal judgment, providing exceptional client service, and closing deals efficiently. At Orbital, you will be part of a team that is revolutionizing the real estate transaction landscape - moving fast, collaborating effectively, and empowering you to make a significant impact from day one.As a Lead Software Engineer, you will develop innovative tools that transform how the world’s largest asset class is transacted. We’re shifting property transactions from tedious manual checks to an automated AI solution that mimics the thought processes of real estate lawyers.You won’t just implement builds; you will leverage your expertise to guide product development and lay the groundwork for our next growth phase. The potential for influence and innovation is immense.Key ResponsibilitiesLead the development of critical product features from ideation to production, establishing the technical direction and architecture.Oversee projects from start to finish, mentoring small teams of 2-4 engineers to ensure the delivery of reliable production systems.Direct AI coding agents to create, iterate, and refine high-quality software.Engage with a tech stack that includes TypeScript, React, PostgreSQL, and Python, reviewing and enhancing the code generated by AI agents.Quickly transform new ideas into customer-facing features, ensuring alignment with user expectations and market demands.

Join Carta, a leading financial technology company, as a Staff Software Engineer. In this role, you will contribute to the development of innovative software solutions that empower companies to manage their equity and ownership structures more effectively. You will collaborate with cross-functional teams, leveraging the latest technologies to deliver robust and scalable applications.

Join our dynamic team at Faculty as a Lead Software Engineer, where you will spearhead innovative projects and mentor a talented group of developers. You will play a vital role in shaping our software solutions while collaborating with cross-functional teams to deliver high-quality products. Your leadership will help drive our mission to revolutionize the tech landscape.

Join Version 1 as an AI Software Engineer and be at the forefront of innovation in artificial intelligence. In this full-time role, you will work with cutting-edge technologies to develop AI-driven software solutions that enhance business operations and customer experiences.As a key member of our Digital, Data and Cloud department, you will collaborate with cross-functional teams to design, implement, and optimize AI algorithms and models. Your contributions will help shape the future of our products and services.

Join Axon, a leader in innovative technology solutions, as a Junior Software Engineer. In this entry-level position, you will have the opportunity to work with a talented team of engineers to develop and enhance software applications that empower law enforcement and public safety agencies worldwide.Your role will involve coding, debugging, and collaborating with cross-functional teams to deliver impactful solutions. This is an exciting opportunity to kick-start your career in software development while making a difference in communities.

Senior Android Software EngineerAt Deliveroo, we are on a mission to revolutionize the shopping and dining experience, powered by our commitment to impact, innovation, and growth. Our Engineering teams face complex technical challenges in a global, three-sided marketplace, creating and enhancing systems that serve millions of customers, riders, and partners every day.From real-time logistics to robust infrastructure and marketplace optimization, we design, build, and maintain technology that fuels Deliveroo’s expansive growth.We are seeking a Senior Android Software Engineer to join our dynamic team in London. In this role, you will contribute to the development and scalability of our top-tier mobile applications, ensuring an uninterrupted and high-performance experience for our diverse user base. This position is based in our London office with a hybrid work arrangement, typically requiring three days in the office.Explore our Engineering team to learn about what motivates us, our collaborative work environment, and what you can expect from us.Your ResponsibilitiesAs a member of the Consumer Tech team, you will focus on the complete customer journey—from the moment they launch the app to when their meal arrives—ensuring each interaction is seamless, quick, and dependable.Your daily activities will include:Lead technical execution by designing, developing, and scaling Android applications that manage complex, real-time interactions on a global scale.Enhance architectural frameworks and conduct code reviews to ensure the maintainability, visibility, and operational health of our mobile codebase.Collaborate with cross-functional teams (PMs, Experience Designers) to plan projects, guide technical decisions, and influence the team’s roadmap.Take ownership of large-scale features from conception to delivery, streamlining maintenance and ensuring operational readiness across our production systems.Foster the development of team members by mentoring peers, promoting efficiency, and actively participating in the engineering hiring process.What We’re Looking ForThe ideal candidate will possess substantial expertise in several of the following areas, with an eagerness to expand their knowledge in others:Extensive experience in developing Android applications, showcasing a robust understanding of the platform and its ecosystem.

Do you have the passion to drive innovation? Join AnyVan and revolutionize the way we move anything, anywhere while building a fulfilling career that accelerates with every challenge. Founded in 2009 by our visionary CEO Angus, AnyVan emerged from the need to optimize logistics by utilizing underused van space. Our mission is to transform logistics technology, dramatically reducing wasted journeys and carbon emissions. With over 150,000 five-star reviews and a customer base exceeding 5 million across the UK and Europe, we are proud to be the preferred choice for countless users. Our dedicated team of 400 AnyVanners, operating from London, Cape Town, and Bogota, is committed to reducing carbon emissions by 8,520 tonnes annually. Be at the forefront of logistics innovationAt the core of our operations is a cutting-edge optimization platform that seamlessly connects customer needs with real-time driver availability, enabling us to provide exceptional service at unbeatable rates.By efficiently matching jobs with drivers already on the road, we minimize unnecessary miles, reduce emissions, and ensure fair earnings for our drivers. It’s a complex interplay of logistics, pricing, and marketplace dynamics, all powered by advanced software.And this is just the beginning...As we embark on the next phase of development, we're transitioning our platform to a truly intelligent logistics marketplace. Your role will involve designing and building systems to:Accurately model job-level costs in real time, paving the way for smarter, more dynamic pricing strategies.Enhance our driver platform, integrating it deeper into their daily operations and unlocking new revenue streams.Establish a two-sided marketplace, facilitating the buying and selling of non-core jobs among drivers to optimize utilization.Scale efficiently as we grow in volume, complexity, and ambition.This position is ideal for engineers who thrive on tackling complex, high-impact challenges and shaping the evolution of a scalable platform.

About Neo4j Neo4j builds a graph intelligence platform used by 84 of the Fortune 100 and supported by the world’s largest graph community. The platform powers knowledge graphs for AI, delivers reliable graph capabilities across cloud environments, and integrates with a wide range of systems. Neo4j’s technology is designed for precision, accountability, and governance, helping organizations turn data into actionable insights for intelligent applications and AI systems. Engineered for seamless operation in any cloud, Neo4j supports dynamic, personalized, and autonomous AI solutions. The focus is on delivering swift results, contextual knowledge, and solutions that improve both customer and employee experiences. Our Vision Neo4j’s mission is to help the world understand data. As business and society become more interconnected, Neo4j’s technology enables organizations to find and understand relationships within their data. The company pioneered the graph database category and continues to lead in helping teams innovate and stay competitive. About the Site Reliability Engineering Team The Site Reliability Engineering (SRE) team supports Neo4j’s Database as a Service (DBaaS) product, Neo4j Aura. Aura operates globally across all major cloud providers, running hundreds of Kubernetes clusters and managing thousands of Neo4j instances in production. This team is redefining SRE within Neo4j Aura. Rather than simply reacting to incidents, the SRE group empowers teams to design for reliability from the start. The work centers on building tools, practices, and a culture that embed SRE principles into the foundation of Aura’s operations. Collaboration with product teams and a commitment to resilience and engineering excellence are central to the team’s approach. What You Will Do Automate for insight and scale: Build systems that enable fast, safe, and scalable troubleshooting across thousands of Neo4j instances. This includes developing internal tools that provide actionable insights. Location London

Role overview Utility Warehouse is hiring an Associate Software Engineer for the Lifecycle Customer team in London. This role focuses on building and improving software that supports customers at every stage of their journey. What you will do Work with engineers, product managers, and other teams to design, build, and support software applications Help develop features that improve customer experiences Maintain and update existing systems to ensure they stay reliable and effective About the team The Lifecycle Customer team works across departments to deliver solutions that support Utility Warehouse’s commitment to strong customer service.

Why Verifone For over four decades, Verifone has been at the forefront of the electronic payment technology industry, establishing itself as a leader and a trusted name in electronic payment solutions. As one of the largest providers of payment systems globally, we take pride in our innovative approach to delivering exceptional payment solutions. At Verifone, our work environment is diverse, dynamic, and fast-paced, where results matter. We work closely with leading retailers, merchants, banks, and partners to design and implement groundbreaking payment solutions worldwide. Our commitment to excellence and customer satisfaction drives our team, fostering a culture of innovation and ambition that empowers every employee to achieve both personal and professional success. About The Role We are on the lookout for a Senior Software Engineer (Node.js / TypeScript) based in London to develop and maintain backend services that support payment, checkout, and transactional workflows. This role involves close collaboration with Product, Frontend, Platform, and Infrastructure teams to create secure and scalable APIs within high-throughput environments. Your contributions will be pivotal to Verifone’s payments and checkout platform, where backend engineering plays a crucial role in facilitating secure and high-volume transactions on a global scale. You will design and manage scalable, production-critical systems that must perform reliably under real-world conditions, adapt to evolving payment methods, and meet strict security standards.

Join Aircall, a leading unicorn in the customer communications sector, revolutionizing the way businesses connect with their customers. Our AI-powered platform, trusted by over 22,000 companies globally, integrates voice, SMS, WhatsApp, and AI into a single cohesive workspace, enhancing revenue generation, expediting issue resolution, and empowering customer-facing teams.At Aircall, we believe in working smarter, not harder. Our AI Voice Agent automates routine calls, AI Assist simplifies post-call tasks, and AI Assist Pro offers real-time support, enabling teams to perform at their best. This innovation leads to increased revenue, quicker resolutions, and scalable teams.Headquartered in Paris, with a robust presence in North America centered in Seattle, Aircall has teams across various cities including Madrid, London, Berlin, San Francisco, New York City, Sydney, and Mexico City. We have crafted a beloved product and a rapidly growing business, supported by top-tier investors and driven by swift AI advancements across our offerings.At Aircall, you will become part of a dynamic and ambitious organization, where product excellence and execution are paramount. We prioritize swift decision-making, visible impact, and genuine growth.Our Work Culture: We are dedicated to our customers, rely on data-driven insights, and are focused on delivering impactful results. We value responsibility, continuous learning, and thoughtful speed. If you thrive in a collaborative, fast-paced environment where trust and impact are essential, you'll fit right in.We are seeking a motivated and passionate Senior Software Engineer to join our expanding engineering team and contribute to our innovative projects.In this role, you will be responsible for the design, development, deployment, and operation of critical features that enhance customer satisfaction. You will focus on operational excellence, metrics, observability, and best practices while mentoring your peers within the engineering team.With a commitment to quality, excellence, and agility, you will help elevate our delivery processes. Utilizing a NodeJS and Typescript back-end stack hosted on AWS, you will ensure that our solutions meet the highest standards.

Our VisionAt Omnea, we are passionately transforming the enterprise landscape, specifically tackling the complexities of procurement. Our goal is to eliminate the lengthy processes that often involve over 50 emails and the engagement of multiple departments such as Finance, Legal, Security, and IT just to secure a simple purchase approval.With a significant investment of $75M from Khosla Ventures, Insight Partners, and Accel, we are set on a mission to revolutionize this space. Our AI-driven platform seamlessly integrates all stakeholders, automating approvals and renewals, managing supplier risks in real-time, and providing complete visibility into spending.The procurement market is valued at over $7B, and our remarkable progress demonstrates the potential: we have achieved a tenfold increase in ARR to double-digit millions within just 18 months, working with esteemed global clients like Spotify, MongoDB, Monzo, and Albertsons. We are proud to be recognized as the 4th fastest growing startup in Europe.Our team boasts experience from scaling Tessian (a cybersecurity tech firm supported by Sequoia, Balderton, and Accel, acquired post-Series C), including former founders and operators who have led unicorn companies and developed top-tier products. You will collaborate with distinguished leaders such as Ben, Abs, Sabrina, and Rebe.What We SeekWe are on the lookout for an outstanding, product-oriented Team Leader - Staff Software Engineer (L4) to enhance our engineering team and navigate Omnea through this exciting growth phase. In the upcoming year, we aim to double our team size, expand our enterprise client base from approximately 100 to over 200, and triple our revenue. This Staff-level position offers a significant opportunity for domain-level influence, combining senior technical leadership with team management duties. You will guide a team, mentor engineers, and shape architectural and product decisions across a broader domain while remaining actively engaged in critical areas.You will be joining us at a critical juncture as we have just secured a $50M funding round to further our mission...

Join PhysicsX as a Senior Software Engineer specializing in our AI Workbench. In this pivotal role, you will lead the development of cutting-edge artificial intelligence solutions that empower our clients to harness the full potential of data and analytics. Your expertise will contribute to the design and implementation of scalable software architectures, ensuring robust performance and reliability. You will collaborate with cross-functional teams to define project requirements and engage in hands-on coding, code reviews, and mentoring junior engineers. If you are passionate about AI and eager to push the boundaries of technology, we want to hear from you!

Join Our Team!Are you an innovative Senior Software Engineer looking to make a significant impact? At Perk, we are redefining the landscape of travel and spend management with our intelligent platform. Our mission is to eliminate the tedious manual tasks that hinder productivity, allowing professionals to focus on what truly matters.Since our establishment in 2015, we've grown to serve over 10,000 companies globally, including renowned names like Wise, On Running, and Breitling. Our cutting-edge tools streamline everything from travel bookings to expense management, addressing a staggering $1.7 trillion problem of lost productivity.With a vibrant workforce of over 1,800 talented individuals across 12 offices, we are committed to fostering innovation and enhancing workplace culture. We believe in the power of curiosity, purpose, and teamwork, and we want you to be part of our journey to transform how businesses operate.

Join our dynamic team at Minderacraft as a passionate Software Engineering Manager, where you will leverage your technical expertise to elevate our engineering capabilities. As a creative, curious, and confident leader, you will play a pivotal role in our self-managing, multi-disciplinary engineering teams, driving the design, development, release, and maintenance of innovative products. Your leadership will be crucial in fostering a culture of excellence, collaboration, and continuous improvement, as we strive to build a world-class software engineering environment.This is an initial 6-month contract (outside IR35) requiring on-site work 3 days a week in Paddington, London.

At Fastly, we are dedicated to enhancing connectivity to the digital experiences that matter most to our users. Our cutting-edge edge cloud platform empowers our clients to rapidly and securely deliver exceptional digital solutions by processing, serving, and securing applications close to their end-users — right at the edge of the Internet. Built to leverage the modern internet, our platform is highly programmable and supports agile software development, serving a roster of prestigious clients such as GitHub, Yelp, Paramount, and JetBlue.Join us in our mission to create a more trustworthy Internet.Posting Open Date: 24 March, 2026Anticipated Posting Close Date*: 20 April, 2026*Job posting may close early due to the volume of applicants.Staff Software Engineer, Compute PlatformOur team is responsible for developing the Compute platform at Fastly — an advanced serverless solution built on open standards operating on our extensive global edge network. This platform meets the demands of modern application development, enabling customers to execute code in a secure environment with microsecond cold start times, at scale, right on the edge.We are seeking a talented Staff Software Engineer to join our dynamic team and help enhance our hosting infrastructure. This role will encompass essential networking and systems-level tasks, as well as cross-team collaboration and the design of high-quality APIs for our customers to leverage services developed by other teams. You will also have the opportunity to contribute to influential open-source projects (such as Wasmtime) that play a pivotal role in our Compute vision.What You'll Do:Facilitate seamless communication and coordination among team members and across various technical and product teams.Engage in code reviews to enhance the codebase and improve team processes.Lead projects from a technical standpoint, driving progress and keeping stakeholders informed on project status.Develop platform-level code in Rust that addresses host concerns such as back pressure, resource limits, and service interactions.Investigate and resolve performance and stability challenges to meet stringent scalability requirements.Take ownership of a large-scale production system characterized by exceptional performance and availability needs.

About Man GroupMan Group is a leading global alternative investment management firm dedicated to delivering exceptional performance for our sophisticated clients through our Systematic, Discretionary, and Solutions offerings. With a strong emphasis on talent and cutting-edge technology, our investment strategies, both single and multi-manager, are driven by comprehensive research and encompass public and private markets across all major asset classes, particularly in alternatives. We pride ourselves on building deep, collaborative partnerships with our clients and crafting bespoke solutions that align with their investment ambitions and the futures of the retirees and savers they support.Headquartered in London, we manage assets totaling $227.6 billion* and maintain a presence in various global offices. Man Group plc is publicly traded on the London Stock Exchange under the ticker EMG.LN and is a member of the FTSE 250 Index. For more information, please visit www.man.com.* As at 31 December 2025The TeamThis is an extraordinary opportunity to become part of one of the largest alternative asset managers. Technology is integral to Man's strategic direction, and we continually adapt to remain at the forefront of the industry. Our culture fosters innovation and change, with engineering being pivotal to our operational framework.We are looking for skilled Software Engineers with extensive experience in C# and .NET to spearhead the design and development of mission-critical systems within our domain. You will be instrumental in shaping the technical strategy and influencing architectural choices within a high-performing team. A passion for utilizing AI development tools to enhance delivery and promote their adoption within the team is essential.This role provides an excellent opportunity to collaborate and learn alongside highly talented engineers while acquiring essential knowledge in financial systems and order management. New team members will engage with the latest technologies to tackle upcoming challenges.

Role overview Speechify is seeking a Software Engineer to join the Platform team in London. This position centers on building and refining the core systems that support the overall user experience. The main focus is on designing, implementing, and maintaining the software that powers the platform. What you will do Collaborate with teams throughout the company to deliver effective software solutions Design and develop systems that enhance how users interact with Speechify Maintain and improve existing platform components Who we’re looking for Genuine interest in technology and software development Comfortable working collaboratively, including in settings where priorities can shift quickly Motivated to solve problems and contribute to projects that make a difference This role is based in London, United Kingdom.