Principal Software Engineer

Why VerifoneVerifone has been a pioneering leader in the electronic payment technology sector for over 40 years. Recognized as one of the foremost brands in electronic payment solutions, we rank among the largest providers of payment systems globally.At Verifone, we foster a diverse and dynamic work environment where results-driven employees have ample opportunities to excel. Our collaboration with top retailers, merchants, banks, and third-party partners enables us to innovate and deliver cutting-edge payment solutions worldwide. We are committed to excellence in our products and services, with an unwavering focus on customer satisfaction. Our team of dedicated professionals is at the forefront of the payments industry, driven by experience, innovation, and a bold spirit. Whether we're developing advanced secure payment platforms or exploring new markets for electronic payments, our passion for innovation propels each employee toward personal and professional success.About The RoleWe are looking for a Principal Software Engineer based in London to provide technical leadership for our global payment gateway systems. This role involves designing and evolving core platform capabilities, guiding architectural decisions across microservices, and mentoring engineers while remaining hands-on with critical systems built using Java and Spring Boot.This position is central to shaping the technical direction of systems responsible for processing high-volume, mission-critical financial transactions globally.In this role, you will go beyond mere feature delivery. You will be instrumental in driving architectural decisions, establishing engineering standards, and influencing how teams design, build, and maintain secure, scalable backend systems. Success is characterized by technical leadership, sound judgment in complex trade-offs, and ownership of systems that must operate reliably under real-world loads and regulatory requirements.Collaboration with senior engineering, platform, product, and infrastructure teams will be crucial to ensure our systems scale effectively, remain secure, and uphold the highest standards for availability and performance.

We are seeking a Principal Software Engineer specialized in engineering applications to join our dynamic team at physicsx. In this role, you will lead the design and development of innovative software solutions that empower our engineering teams to achieve exceptional results. Your expertise will drive the implementation of cutting-edge technologies and methodologies, ensuring the highest standards of performance and reliability.As a Principal Software Engineer, you will collaborate closely with cross-functional teams, mentor junior engineers, and contribute to the overall technical strategy of our organization. You will have the opportunity to work on challenging projects that have a significant impact on our business and clients.

ifs1 seeks a Lead or Principal DevOps Engineer based in London. This position centers on strengthening infrastructure to help deliver reliable systems and streamline operations. Key responsibilities Build and refine infrastructure solutions that support the team’s goals Design, implement, and maintain continuous integration and delivery pipelines Drive improvements in operational efficiency and system reliability Location This role is located in London.

Join Our MissionAt Omnea, we’re transforming enterprise operations by focusing on the often cumbersome procurement process. Imagine a world where a single purchase no longer takes months, requiring 50+ emails and approvals from Finance, Legal, Security, and IT. We aim to change that.Backed by $75M from Khosla Ventures, Insight Partners, and Accel, our AI-driven platform seamlessly connects every stakeholder, step, and system to facilitate quick, safe, and efficient purchasing. Experience automated approvals, real-time supplier risk assessments, and complete visibility into spending—all from one centralized location.With a $7B+ untapped market, our growth trajectory speaks volumes. We have achieved a tenfold increase in Annual Recurring Revenue (ARR), reaching double-digit millions in just 18 months, and have earned the trust of global enterprises like Spotify, MongoDB, Monzo, and Albertsons. We are proud to be recognized as the 4th fastest growing startup in Europe.Our experienced team includes former members of Tessian, the cybersecurity tech firm backed by Sequoia, Balderton, and Accel, who have successfully scaled unicorns and launched world-class products. You will collaborate with industry leaders including Ben, Abs, Sabrina, and Rebe.Your RoleWe are on the lookout for an outstanding, product-focused full-stack software engineer to join our engineering team. As we aim to scale from our current double-digit customers to over 200 enterprise clients and significantly increase our revenue over the next 2–3 years, your contributions will be vital in driving our product, team, and company growth as we transition from a 'start-up' to a 'scale-up'.You will be joining us at a crucial moment. We recently secured $50M in Series B funding from Khosla Ventures, Insight Partners, and Accel.

Why Join Faculty?Founded in 2014, Faculty believes that artificial intelligence (AI) is poised to be one of the most transformative technologies of our era. Over the years, we have collaborated with more than 350 global clients, helping them enhance their performance through human-centered AI solutions. Discover our impactful projects here.At Faculty, we prioritize genuine innovation over fleeting trends. We focus on developing and implementing responsible AI that truly makes a difference. Our clients range across various sectors, including government, finance, retail, energy, life sciences, and defense, and we possess an unmatched depth of technical, product, and delivery expertise.As our reputation grows, we continuously seek talented individuals who share our intellectual curiosity and are eager to leave a positive legacy through technology.AI is a groundbreaking technology; join us to explore its most powerful applications and help bring them to life.About the TeamWithin our Professional and Financial Services Business unit, we leverage over a decade of Applied AI experience to assist our clients in navigating a fast-evolving landscape. We create and integrate AI solutions that enhance efficiency, improve customer experience, and uncover commercial opportunities in uncertain markets. In a highly regulated industry, we see immense potential for meaningful innovation and are proud to set the standard for combining technical excellence with secure deployment.About the RoleAs a Lead Software Engineer, you will drive the technical direction and execution of complex, innovative AI projects. Acting as a technical authority, you will apply your expertise across various initiatives, from AI strategy formulation to client-side implementations, ensuring that architectural decisions are both robust and reliable. This role requires a blend of profound technical knowledge and strong leadership capabilities, emphasizing innovation, team development, and the creation of reusable solutions across the organization. If you are ready to oversee high-stakes projects and deliver impactful, innovative results, this is your opportunity to shape our future.What You'll Be DoingLeading the technical direction and delivery of sophisticated AI projects.Applying your technical expertise to various projects, ensuring sound architectural decisions.Driving innovation while fostering team growth and collaboration.Building reusable solutions that can be leveraged across the organization.

Join Wayve Technologies as a Principal Application Software Engineer and be part of a pioneering team that is transforming the future of autonomous driving. This role involves leading software application development, collaborating closely with cross-functional teams, and driving innovative solutions to real-world challenges in the automotive industry.The ideal candidate will possess extensive experience in software engineering, a strong understanding of algorithms, and a passion for cutting-edge technology. You will play a critical role in enhancing our software architecture and ensuring the scalability and performance of our applications.

Join Elastic, the leading Search AI Company, as a Principal Software Engineer II focused on Search Internals for Lucene and Elasticsearch. In this pivotal role, you will leverage your extensive expertise to drive the evolution of our core search capabilities, ensuring we deliver an unparalleled search experience. Collaborate within a globally-distributed team of seasoned engineers to enhance our search infrastructure, including indexing and retrieval. You will define the technical vision and roadmap for Elasticsearch, working closely with product teams to shape innovative solutions that meet user needs. Your insights will continuously improve the search experience, making you a key authority in the field.

At Mindera, we create exceptional software solutions with a team of passionate individuals. We are currently seeking a Principal Java Engineer with extensive experience in the retail domain to join our dynamic crew!This is a six-month contract role that operates outside of IR35 regulations. The position requires you to work in our Paddington office three days a week.Role Responsibilities:Lead technical discussions and knowledge-sharing sessions within the team, proactively identifying challenges and offering innovative solutions.Influence product and business strategies through technical expertise.Hands-on Software Development:Develop high-quality Java applications utilizing frameworks like Spring Boot or Micronaut.Create resilient services that facilitate secure, high-volume payment transactions.Integrate with acquiring banks, payment gateways, and fraud detection systems.Cloud & DevOps Practices:Design and maintain cloud-native solutions on platforms such as Azure, employing Terraform and Kubernetes.Oversee CI/CD pipelines with GitHub Actions, ensuring seamless deployment to production environments.Manage monitoring, alerting, and observability using tools like OpenTelemetry and Dynatrace.Security & Compliance:Promote secure coding practices and data protection across all services.Collaboration & Mentoring:Collaborate closely with product owners, engineering leads, and other stakeholders to define and refine technical solutions.Mentor junior, mid-level, and senior engineers, fostering a culture of technical excellence.Establish and advocate for best practices in code reviews, testing, delivery, and operational support.Continuous Improvement:Consistently enhance platform reliability, performance, and cost-effectiveness.Stay abreast of technology trends and proactively seek opportunities for innovation.

Join Elliptic, where our cutting-edge Investigator tool empowers compliance teams globally to execute investigations with unprecedented speed and efficacy, utilizing the world's most precise crypto identity dataset. Our intuitive forensics visualize fund flows across blockchains at the click of a button, enabling teams to uncover vital evidence swiftly and resolve criminal cases more efficiently. We're seeking a dynamic Engineering Lead to elevate our product and team to new heights.Your Impact:As the Lead of the Investigations team, you will redefine how compliance teams monitor fund movements and combat financial crime. Collaborating closely with product management, you will guide the technical strategy of our platform, transforming complex blockchain data into intuitive and valuable product features.You will mentor and cultivate a high-performing team, instilling a culture of innovation and accountability, while partnering across the organization to provide significant value to our users.Your Responsibilities:Write and review code to support the team, exemplifying best practices, and collaborate with engineers to share insights and tackle complex challenges.Guide your team in making informed technical choices by evaluating trade-offs and selecting strategies that align technical quality with business objectives.Work collaboratively with Product and other stakeholders to ensure the team focuses on the most impactful work.Empower team members to discover their own solutions, enhancing problem-solving skills and fostering a self-sufficient, resilient team.Provide comprehensive system context and overviews to new team members, expediting their onboarding and productivity.Articulate complex technical concepts clearly to engineers, managers, and business stakeholders.Your Qualifications:Leadership Experience: You have successfully led or mentored a small engineering team (approximately 3–6 members) and contributed to their professional growth.Proficiency in JavaScript/TypeScript: Strong skills in backend (Node.js) and frontend (React) development. Experience with frameworks such as NestJS or Redux is an advantage.Architectural Acumen: You have designed scalable UI applications and APIs and are adept at making informed decisions regarding technology choices and architectural patterns.Problem-Solving Mindset: A passion for tackling complex technical challenges and a commitment to continuous improvement.

Join Hudl as a Lead Software Engineer and make an impact in the world of sports technology. In this role, you'll lead a team of talented engineers to design, develop, and implement innovative software solutions that empower athletes and coaches. Your expertise will drive project success and enhance our product offerings.

Join abound as a Lead Software Engineer and take your career to the next level! In this pivotal role, you will spearhead innovative software solutions that drive our business forward. Collaborate with a talented team of engineers and play a key role in shaping the future of our technology stack.We are looking for passionate individuals who are eager to tackle complex challenges and deliver high-quality software. Your leadership will be crucial in mentoring junior developers and setting best practices in code quality, testing, and deployment.

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 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 Faculty: Pioneering AI InnovationFounded in 2014, Faculty believes that artificial intelligence (AI) is the transformative technology of our era. We have partnered with over 350 global customers, driving performance improvements through human-centric AI solutions. Discover our impactful projects here.At Faculty, we prioritize innovation over trends. Our mission is to develop and implement responsible AI that truly makes a difference. Our team brings unmatched expertise in technology, product development, and delivery to various sectors, including government, finance, retail, energy, life sciences, and defense.As our reputation grows, we seek individuals who share our curiosity and commitment to creating a lasting positive impact through technology.AI is a game-changing technology. Join us to explore its most powerful applications and bring them to life.Role OverviewAs a Lead Software Engineer within our Customer Development team, you will not only develop software but also spearhead the deployment, customization, and scaling of our innovative Frontier platform for enterprise clients.As we broaden the reach of our platform, you'll have the distinct opportunity to create a scalable AI-focused product while remaining attuned to real-time customer feedback and setting the standard for technical excellence.This role immerses you in the deployment of Frontier in complex environments, addressing real-world challenges with cutting-edge technology. Your work will optimize multinational supply chain logistics, expedite clinical trial timelines, and support sustainability initiatives, enabling organizations to make informed decisions through AI-enhanced insights.Embark on this thrilling journey of transforming decision-making with AI and machine learning, revolutionizing business success through Decision Intelligence.

Join CoreWeave as a Principal Engineer!At CoreWeave, we are redefining the cloud landscape for AI innovation. Our platform is tailored for trailblazers, offering cutting-edge technology and a collaborative environment designed to empower innovators to construct and expand AI solutions with assuredness. Serving leading AI labs, startups, and global corporations, we blend exceptional infrastructure performance with extensive technical know-how to expedite breakthroughs and transform compute power into actionable capabilities. Since our founding in 2017, we have proudly transitioned to a publicly traded entity (Nasdaq: CRWV) as of March 2025. Discover more at www.coreweave.com.As a Living Wage accredited Employer, we prioritize fair compensation for all our employees.

Join PMG: A Leader in Marketing InnovationRecognized by Ad Age as one of the Best Places to Work for 11 consecutive years and awarded by Fast Company as a Best Workplace for Innovators since 2022, PMG stands as a global marketing services and technology company dedicated to inspiring people and brands to realize their full potential. Through our unique operating system, Alli, we integrate business strategy, creative solutions, and media insights to create transformative digital solutions and media strategies.With a diverse team of over 900 employees worldwide, we proudly partner with esteemed brands like Apple, Nike, Sephora, and many others, delivering impactful marketing campaigns across more than 85 countries.Your Role at PMGAs the Lead Software Engineer, you will be an integral part of our collaborative and innovative team. You will contribute to the development of Alli, a cloud-based suite of AI-driven tools that enhances digital marketing for some of the world’s leading brands. Last year, our platform enabled marketing campaigns that connected with over 1 billion consumers globally, achieving remarkable results for our clients.You will focus on one of Alli’s core pillars—Actions, Data, or Insights—working alongside cross-functional teams to tackle complex challenges and create scalable, AI-enhanced solutions. Your contributions will be pivotal in enhancing PMG’s platform, helping brands engage their audiences more effectively.At PMG, we are looking for innovators and problem-solvers who are ready to take on the challenges of tomorrow. Your work will not just stay in the realm of theory; it will directly impact the future of digital marketing.

Join us in transforming compensation for companies worldwide.At Ravio, we understand that the compensation we receive at work greatly influences our lives and career choices. In today's competitive landscape, attracting and retaining talent hinges on fair and informed pay practices. Unfortunately, many companies still rely on outdated data and inadequate tools for their compensation decisions. That's where Ravio steps in.We empower some of the most innovative and ambitious companies to build stronger teams and achieve their objectives through intelligent compensation strategies. Our cutting-edge real-time data platform modernizes the compensation landscape, providing comprehensive insights into salary, equity, and benefits.As a rapidly growing organization, Ravio has established itself as the leading provider in Europe, serving over 1,200 clients. Our ambitious goal is to become the global authority on compensation data and management tools.If you're eager to immerse yourself in a startup environment and contribute to scaling a global product, you’ve come to the right place.Your RoleWe are seeking two dynamic Senior Lead Software Engineers to join our engineering team. In this pivotal role, you will provide technical leadership and drive significant contributions to our product's architecture and design.As part of our Web App engineering team, you will be instrumental in developing Ravio's customer-facing web application, a sophisticated data and SaaS platform. You will take ownership of various facets of product architecture and technical design, leading implementations with expertise.You should possess extensive experience in at least one specialized area such as frontend, backend, security, infrastructure, or performance, and you will set high standards for code quality, system reliability, and design excellence.Our team is composed of specialists in both frontend and backend development, and every member contributes across the full technology stack. This hands-on role requires you to lead technical decision-making and tackle the most complex challenges we face. Additionally, as our company expands, management opportunities will arise for those interested in leadership roles.QualificationsA minimum of 8 years of professional experience in software engineeringProven ability to inspire teams and lead impactful projects with minimal oversightDemonstrated proficiency in senior-level contributions inTypeScriptJavaScriptNode.jsCloud infrastructure (AWS, Azure, etc.)CI/CD practices

At Intercom, we're revolutionizing customer service through our advanced AI solutions. Our flagship AI agent, Fin, empowers businesses to deliver exceptional customer experiences, ensuring they're always available to assist users. When combined with our Helpdesk, Fin forms the Intercom Customer Service Suite, a comprehensive solution for addressing complex customer queries that require a personal touch.Since our inception in 2011, we have gained the trust of nearly 30,000 businesses globally, setting the standard for customer service excellence. Our commitment to innovation drives us to push boundaries and deliver unparalleled value to our clients.What’s the opportunity?As a Principal Engineer at Intercom, you'll take the lead in defining and executing key strategic initiatives. This role offers you the autonomy to impact the engineering organization significantly. You'll be responsible for developing both back-end and front-end systems, collaborating closely with designers, product managers, researchers, and data analysts. Additionally, you'll mentor and coach fellow engineers while partnering with Group Engineering Managers on technical strategy and leadership.What will I be doing?In this role, you will:Utilize your domain expertise to lead pivotal projects within our R&D organization.Provide insights on project progress, risks, and challenges to guide resource allocation and prioritization effectively.Contribute to our technical architecture, ensuring our systems scale to meet growing customer demands.Prioritize agility alongside scalability and availability, with a focus on continuous deployment and incremental releases.Engage in all software development phases, including ideation, prototyping, design, and implementation, balancing hands-on development with architectural leadership.Leverage state-of-the-art tools to enhance productivity and streamline problem-solving.

Join us at Docker, where we revolutionize app development, allowing developers to concentrate on what truly matters. Our remote-first global team thrives on innovation and enhancing the developer experience. With over 20 million monthly users and 20 billion image pulls, Docker stands as the premier tool for building, sharing, and running applications—trusted by both startups and Fortune 100 companies. As we rapidly expand, we're just getting started. Come aboard and enjoy this exciting journey!We are seeking a Principal Software Engineer (Docker Agents) to join our AI engineering team to shape the future of containerized AI agents. Docker containers provide the ideal environment for hosting and executing AI agents, ensuring isolation, portability, and reproducibility. You will work on our open-source project, cagent (https://github.com/docker/cagent), and enhance it to empower developers in building, deploying, and scaling intelligent agents utilizing Docker’s container technology.This is a unique opportunity to influence how developers harness containers for AI agents on a large scale. You will establish the technical vision, spearhead architectural decisions, and collaborate with engineers and leaders across Docker to integrate containerized agent capabilities into the developer experience.