Senior Software Engineer at AECOM | London

We are seeking an experienced Senior Software Engineer to join our innovative team at AECOM in London. In this role, you will be responsible for designing, developing, and implementing software solutions that meet client needs. You will collaborate with cross-functional teams to deliver high-quality products and improve our software development processes.

Senior Data EngineerLocation: London (Hybrid)About SwapSwap serves as the foundation for modern agentic commerce, being the only AI-native platform that seamlessly integrates backend operations with a progressive storefront experience.Designed for brands aiming to sell anything, anywhere, Swap centralizes global operations, fuels intelligent workflows, and enables margin-preserving decisions through real-time data and capabilities. Our product suite encompasses cross-border transactions, tax solutions, returns management, demand planning, and our cutting-edge agentic storefront, empowering merchants with full transparency and actionable insights.At Swap, we are cultivating a culture that emphasizes clarity, creativity, and shared ownership as we revolutionize the landscape of global commerce.About the RoleWe are seeking a dedicated and detail-oriented Senior Data Engineer to join our platform team as we swiftly advance our technology stack for a new, data-driven era at Swap. In this role, you will lead transformative initiatives by developing world-class data systems for the entire organization, while also contributing to the platform’s vision and advocating for internal best practices.This position calls for a knowledgeable, hands-on, and enthusiastic team player who is eager to accelerate and scale a greenfield project. If you thrive in a fast-paced, collaborative environment where your contributions can make a significant impact, we want to hear from you!ResponsibilitiesAPI Strategy & Development: Lead the strategy and implementation of our API layer to facilitate product access to essential data.Platform Technical Vision: Shape and influence the technical direction of Swap’s data platform to ensure readiness for future business growth.Data Pipeline Development: Manage our replication pipelines, ensuring optimal observability, latency, and alerting capabilities.Data Quality & Governance: Champion best practices to ensure our data is reliable and trustworthy as we scale, delivering top-tier products for Swap.What We Are Looking For5+ years of experience as a data engineer in customer-centric product environments.Proven proficiency in Python for data pipeline creation, orchestration, and API development.

Join Axon and become a Force for Good.At Axon, we are dedicated to Protecting Life. Our mission drives us to tackle society's most pressing safety and justice challenges through our innovative ecosystem of devices and cloud-based software. We believe in collaboration, openness, and the value of diverse perspectives from our customers, communities, and each other.Life at Axon is dynamic, demanding, and impactful. Here, you will take ownership of your work and instigate tangible change. Experience continuous growth while contributing to a mission that truly matters, at a company that values your contributions.Your ImpactThis position is ideal for innovators who thrive in a startup-like environment. In Axon's Global Artificial Intelligence division, you will develop a groundbreaking product with a small, dedicated team, aiming to deliver something unprecedented to the market swiftly.As a Senior Software Engineer I, you will spearhead critical aspects of the product from conception to launch. You will make informed architectural decisions, maintain high quality while accelerating development, and assist the team in transforming prototypes into a scalable solution.This role is fundamentally AI-driven: AI will be integral to your delivery approach, not merely an addition.What You’ll DoOversee the development of significant product features and services; manage end-to-end ownership from design through to operations.Clarify product direction amidst uncertainty: articulate the problem, define MVP scope, establish success metrics, and ensure stakeholder alignment on project completion criteria.Create and deploy software using AI methodologies across the Software Development Life Cycle (SDLC), with thorough validation practices to ensure accuracy and quality.Utilize engineering metrics (lead time, PR throughput, defect rates, test coverage, incident load) to assess and enhance delivery outcomes, refining team shipping processes.Make architectural choices that effectively balance speed and scalability, recognizing when temporary solutions become permanent.Implement and uphold engineering best practices that enhance productivity (testing strategies, CI/CD, observability, and sensible release methodologies).Collaborate closely with Product and Design teams (and function effectively in their absence) to prioritize, sequence, and deliver the highest-value increments.Mentor fellow engineers while fostering a culture of trust and ownership.

Join Our Team at Motorway!Motorway is the UK's leading online marketplace for used cars, connecting private sellers with thousands of trusted dealers across the nation. Launched in 2017, our innovative approach has transformed the car selling experience, and we are proud to be backed by top-tier technology investors, having secured £143 million in Series C financing.This is an exceptional opportunity to become part of a rapidly growing scale-up during a pivotal moment in our expansion, contributing to positive change in the automotive industry.Your Role:As a Senior Developer Experience Security Engineer, you will play a crucial role in enhancing the security and scalability of our developer experience at Motorway. Our team is focused on building a new container platform utilizing AWS Fargate, and we are dedicated to improving our observability, reliability, and developer-centric tools.You will bridge the gap between the Developer Experience and Security Operations teams, ensuring that security strategies are seamlessly integrated into our platform abstractions, tools, and configurations. Your mission is to make the secure path the easiest path for our engineers as they build, deploy, and operate software.Key Responsibilities:Design, implement, and maintain secure-by-default platform capabilities, including IAM patterns, network primitives, secrets management, runtime protections, and encryption, that are user-friendly for product teams.Develop automated security checks and guardrails to enhance our security posture.

Join our innovative team at Kaluza as a Senior Software Engineer I, where you will play a crucial role in shaping the future of energy technology. You will collaborate with talented engineers to design and implement software solutions that enhance our platform's scalability and performance.

Join G MASS as a Senior Software Engineer and play a pivotal role in supporting a prominent Investment Manager. This initial 6-month engagement places you within a core engineering team that operates in a dynamic, quantitative investment setting. You will be integral in enhancing the technology and data frameworks that power systematic trading strategies and cutting-edge research. Your contributions will enable investment teams to efficiently access, process, and leverage extensive market and research data in a fast-paced, analytics-driven environment.Key Responsibilities:Architect, develop, and refine large-scale data and infrastructure platforms that underpin trading and research activities.Establish and sustain systems designed to process vast amounts of data from a variety of global sources.Collaborate closely with researchers, traders, and fellow engineers to ensure seamless support for investment workflows.Enhance the scalability, performance, and reliability of distributed systems.Utilize Java and Python primarily in the development and maintenance of services.Engage with modern data and messaging technologies, including Kafka, ArcticDB, and MongoDB.

Join Us in Transforming the Creator Economy with AIFanvue is rapidly emerging as one of the leading platforms for creator monetization on a global scale. Our AI-driven, creator-centric platform empowers creators to connect with their audiences, engage meaningfully, and generate income directly at scale. Following our successful Series A funding, Fanvue has achieved over $100M in annual recurring revenue, with impressive triple-digit growth year-over-year, supporting countless creators and millions of fans around the world.As we continue to expand, the significance of data within our organization is becoming increasingly vital across various functions including product development, growth strategies, finance, and risk management. This position is pivotal in establishing a robust data foundation that the entire company can rely on, facilitating quicker decision-making, sophisticated analytics, and scalable machine learning capabilities. The RoleWe are seeking a Senior Data Engineer to take charge of and enhance Fanvue’s essential data infrastructure.This is a crucial, high-impact role where you will stabilize data ingestion processes, enhance observability and governance, minimize manual tasks, and enable advanced analytics and machine learning workloads. Your contributions will be foundational in helping Fanvue thrive as a genuinely data-driven organization. ResponsibilitiesOversee and stabilize end-to-end data ingestion pipelines, including Change Data Capture (CDC) ingestion using Amazon DMSAddress schema drift challenges and automate column ingestion to eliminate manual re-sync effortsDevelop production-grade observability for data pipelines, dbt runs, and Athena performanceSet up monitoring and alerting frameworks to proactively identify data quality issues or pipeline failuresEnhance CI/CD workflows for data transformations, aiming to reduce PR build times and deployment complexitiesDesign and implement reusable ingestion frameworks for swift onboarding of new data sourcesEstablish robust data governance protocols, including dbt tests in production and scheduled full-refresh pipelinesFacilitate advanced analytics and ML infrastructure, including AWS SageMaker integration and on-demand analytics environmentsImplement fine-grained access controls (RBAC) to safeguard PII and sensitive data as the company scalesManage Infrastructure as Code for the data platform utilizing AWS CDK

Join our innovative team at Elliptic as a Senior Data Engineer, where your expertise will help shape the future of blockchain intelligence. We are looking for a talented individual who is passionate about data engineering and wants to make an impact in the cryptocurrency space.In this role, you will design, develop, and optimize data pipelines, ensuring the integrity and accuracy of data that drives decision-making across the organization. Your work will involve collaborating with various stakeholders to identify data needs and implement solutions that enhance data accessibility and usability.

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.

airapps is hiring a Security Engineer to help safeguard digital assets and infrastructure in the London Metropolitan Area. This role centers on identifying weaknesses, managing security risks, and ensuring strong security measures are in place. Key responsibilities Identify vulnerabilities throughout information systems Reduce and address security risks as they arise Implement and maintain effective security protocols Support efforts to comply with relevant industry standards Help strengthen the company’s overall security posture Location This position is based in the London Metropolitan Area.

ABOUT AvolutionJoin Avolution, a prestigious global leader in Enterprise Architecture Software with over 20 years of experience. Our established presence spans across London, Sydney, Northern Virginia, and Singapore, and we are recognized in the Gartner Magic Quadrant as an industry frontrunner. Become part of our intelligent, friendly team, where your skills and initiative will drive our growth while enjoying a culture rated as collegial, collaborative, flexible, and supportive by our employees.Key ResponsibilitiesCloud & Infrastructure SecurityDesign, manage, and enhance security configurations across Azure and AWS environments, ensuring seamless integration with Office 365.Implement and enforce industry best practices for identity and access management (IAM) in Azure AD (Entra ID) and AWS IAM.Monitor cloud workloads for vulnerabilities, misconfigurations, and threats utilizing tools such as Microsoft Defender.Collaborate with DevOps/Engineering teams to embed security controls into CI/CD pipelines, advocating for DevSecOps principles.Conduct thorough security assessments, including aiding in penetration testing and risk evaluations to identify and mitigate potential vulnerabilities.Endpoint & Identity SecurityEnhance device posture, compliance, and management utilizing Microsoft Intune and Defender for Endpoint.Develop and maintain solid conditional access, multi-factor authentication (MFA), and endpoint protection policies.Oversee secure identity lifecycle processes, enforcing least-privilege access and zero-trust principles.Security OperationsRespond promptly to security alerts, incidents, and vulnerabilities with thorough investigations and remediation actions.Perform regular risk assessments, security reviews, and internal audits.Manage and optimize security tools, including SIEM, EDR, vulnerability scanners, and the Microsoft Defender suite.Lead incident response efforts and coordinate with cross-functional teams.Compliance & GovernanceSupport ISO 27001:2022 recertification and ongoing compliance activities, including internal audits.Prepare for and assist in obtaining additional compliance certifications (e.g., SOC 2, GDPR) to facilitate company growth.Develop, maintain, and enhance security policies, procedures, and technical documentation.Track, report on, and address audit findings or compliance gaps.Collaboration & CulturePartner with globally distributed teams across EMEA, AMER, and APAC regions.Educate internal teams on security best practices and cultivate a security-first culture through training and awareness initiatives.

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.

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 Perplexity, a pioneering firm serving millions of users daily by providing reliable and high-quality answers through an innovative LLM-first search engine combined with specialized data sources. Our Answer Quality team plays a crucial role in refining prompts, tools, searches, and specialized datasets, ensuring that our evaluations are fast, accurate, and actionable. In this exciting role, you will be instrumental in building the data flywheel that supports various teams across Perplexity.ResponsibilitiesDevelop and maintain systems and pipelines that empower Search, Product, and other teams to independently access reliable evaluation verdicts without delays.Take charge of the "evals-to-product" loop, autonomously transforming raw signals into robust datasets that drive decision-making throughout the organization.Construct a sophisticated simulator pipeline capable of replaying user interactions with the product in formats comprehensible to LLMs and VLMs, reflecting real-time product updates.Ensure data integrity by implementing monitoring, lineage tracking, and quality checks, providing downstream consumers with reliable results.Collaborate within a small, impactful team where your contributions will directly influence how Perplexity measures and enhances Answer Quality.

About AirwallexAirwallex stands as the sole unified payments and financial platform tailored for global enterprises. Leveraging our unique blend of proprietary infrastructure and innovative software, we empower over 200,000 businesses globally—such as Brex, Rippling, Navan, Qantas, and SHEIN—with comprehensive solutions for managing everything from business accounts and payments to spend management, treasury, and embedded finance on a worldwide scale.Founded in Melbourne, we proudly boast a team of over 2,000 of the most talented and inventive minds in technology across 26 offices worldwide. With a valuation of US$8 billion and the support of top-tier investors including T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, Airwallex is at the forefront of creating the global payments and financial platform of tomorrow. If you're ready to embark on the most ambitious journey of your career, we invite you to join us.Attributes We ValueWe seek builders who possess founder-like energy and desire to make a tangible impact, accelerate their learning, and gain true ownership. You bring substantial role-related expertise and sharp analytical thinking, motivated by our mission and operating principles. You act swiftly with sound judgment, explore deeply with curiosity, and make decisions grounded in first principles, maintaining a balance between speed and thoroughness.You demonstrate humility and collaboration by transforming zero-to-one ideas into tangible products, ensuring that you 'get things done' from start to finish. Utilizing AI, you work smarter and solve problems more efficiently. Here, you will confront complex, high-visibility challenges alongside exceptional teammates while advancing your career as we shape the future of global banking. If this resonates with you, let’s build what’s next together.What the Scale Team DoesEmbedded Finance Platform: Design and maintain the multi-tenant infrastructure that supports enterprises like Rippling, Navan, Qantas, and SHEIN. You will architect systems that consolidate requests from all platform clients, ensuring enterprise-grade SLAs for availability, latency, and throughput while managing cross-data-center scenarios.Cross-Domain Product Features: Own features requiring a synthesis of knowledge across business, regulatory, and technical domains—areas where no single existing team has complete coverage, such as tax systems, compliance-driven flows, or monetization tools.Solutions Architecture: Design integrations for enterprise prospects to enhance operational efficiency and drive growth.

Join Axon as a Senior Software Engineer I and be at the forefront of developing innovative software solutions that enhance public safety. You will leverage your expertise to design, build, and maintain software systems that have a meaningful impact.

Role Overview Aircall is looking for a Security Engineer focused on Product Security to help protect our products and platform. This role is based in our London office. What You Will Do Work with teams across engineering, product, and other functions to spot vulnerabilities and address them early in the development process. Implement security measures that fit our product development lifecycle. Lead security initiatives that strengthen customer trust and protect sensitive data. Support efforts to keep our security standards high as our platform evolves. Impact This role directly shapes the security of Aircall’s products and the safety of customer data. The work supports our commitment to strong security practices and helps maintain trust with our users.