Senior Engineer at NALA | London

👋 About UsNALA is on a mission to revolutionize payments for the next billion users. Our commitment to faster, smarter, and fairer money transfers has led us to grow exponentially since our inception in 2022, expanding our team from just 9 to over 150 talented individuals. We've successfully raised over $50 million from prestigious investors and have been p…

About UsNALA is revolutionizing global payments for the next billion people, providing faster, smarter, and fairer transfer solutions for everyone. Since our inception in 2022, we have experienced an extraordinary growth of 120x, expanded our team from 9 to over 150 professionals, secured $50M+ in funding from leading investors, and earned a spot in the prestigious Forbes Fintech 50 in 2025.We deliver two key products:NALA, our consumer app, enables affordable, quick, and reliable cross-border payments for the global diaspora, facilitating money transfers from the UK, US, and EU to Africa and Asia.Rafiki, our B2B payments infrastructure, powers seamless global transactions.Our dynamic team comprises alumni from renowned companies like Wise, Stripe, Monzo, Revolut, and CashApp—experts who have successfully scaled world-class products. We embody a culture of urgency, deep thinking, and unwavering customer focus.At NALA, this is more than just a job; it’s about taking ownership, making an impact, and redefining global payments for the better.Join us in our mission to create Payments for the Next Billion. Your MissionAs a Senior Analytics Engineer, you will take charge of enhancing and maintaining NALA's data transformation layer—the backbone for all reporting, governed metrics, self-service analytics, and AI-driven functionalities. Your contributions will enrich the semantic context, structure, and governance of our data, ensuring that every model is comprehensively documented, tested, and interpretable by both humans and AI systems. With the rise of agentic analytics, your role is crucial in ensuring that NALA's data infrastructure is adequately prepared. Your Responsibilities in this RoleOversee the transformation layer (dbt + Snowflake), implementing best practices and advancing our data stack to achieve excellence.Manage streaming data pipelines alongside batch transformations, guaranteeing reliable and cost-effective real-time data flows integrated into the overall data architecture.Establish and uphold coding and agentic coding standards, ensuring systematic testing and documentation are default practices across all data models.Optimize warehouse performance and cost efficiency by identifying and rectifying query patterns and materialization decisions leading to unnecessary expenditures.Lay the groundwork for AI-enhanced self-service capabilities by developing robust data models and interfaces.

About NALANALA is on a mission to revolutionize global payments for the next billion users. We are committed to providing faster, smarter, and fairer transfer solutions for everyone. Since our inception in 2022, we have achieved remarkable growth, expanding our operations by 120 times and increasing our team from 9 to over 150 talented individuals. We have successfully raised over $50 million in funding from leading investors and have been recognized in the Forbes Fintech 50 for two consecutive years, 2025 and 2026.Our key offerings include:NALA: A consumer app designed to facilitate cost-effective, rapid, and reliable cross-border payments, enabling users to send money from the UK, US, and EU to Africa and Asia.Rafiki: Our B2B payments platform that powers global payment solutions.Our team consists of professionals from notable companies like Wise, Stripe, Monzo, Revolut, and CashApp, bringing a wealth of experience in scaling world-class products. We prioritize urgency, deep thinking, and relentless customer focus.At NALA, we offer more than just a job; we provide ownership, impact, and the opportunity to transform the landscape of global payments.Join us in our quest to create Payments for the Next Billion!

About Us Welcome to Zopa! Since our inception in 2005, we have pioneered the peer-to-peer lending landscape, and in 2020, we proudly launched Zopa Bank. Our mission is to revolutionize the banking experience by actively listening to our customers and addressing their financial concerns. We are committed to creating a banking ecosystem that prioritizes our customers’ needs, enabling them to reach their financial aspirations. Discover more about our innovative services at Zopa.com!Our accolades speak volumes; we not only receive industry awards but have also been recognized as one of the top three Most Loved Workplaces in the UK.If you are passionate about tackling unconventional challenges, thinking outside the box, and making a significant impact in the financial space, Zopa is the place for you. Join us and be part of something remarkable! Follow our journey on Instagram @zopalife.Your Engineering ChallengeAs a Senior Software Engineer, you won't just be writing code; you'll be tackling real financial challenges faced by millions. You will design and implement distributed systems that handle thousands of transactions each day, develop robust services to manage financial data, and simplify complex financial products to enhance user experience.

Role overview DV Trading is hiring a Senior Cloud Engineer to strengthen its cloud infrastructure in support of trading operations. The position is based in London and centers on both improvement and ongoing maintenance of cloud systems critical to the business. What you will do Develop and implement cloud solutions aimed at increasing reliability and scalability. Enhance the performance of trading platforms through targeted system improvements. Collaborate with teams across the company to design and refine cloud strategies. Use technical expertise to streamline processes and improve efficiency within the technology stack. Location This role is located in London.

About H Company H Company pursues advances in superintelligence with a focus on agentic AI. The team works to automate complex, multi-step tasks that typically require human involvement, aiming to expand what people can achieve. H Company values curiosity, responsibility, and a commitment to safety in AI. The culture emphasizes openness, ongoing learning, and collaboration, with each person’s input recognized and appreciated. Infrastructure Team Overview The Infrastructure team provides researchers and engineers with the resources they need to do their best work. This group maintains the core infrastructure behind H’s public services, building systems that are reliable, scalable, and ready for growth. Team members shape everything from foundational models to agent systems and public-facing services.

About UsAt Mytos, we are revolutionizing the biotech industry. Join our mission to empower scientists, expedite their research efforts, and facilitate quicker access to life-saving treatments.We have engineered cutting-edge machines to fully automate human cell production—previously one of the most labor-intensive tasks in biotechnology. Our cells play a crucial role in the discovery and development of new pharmaceuticals, contributing to breakthroughs in treating conditions such as Parkinson’s disease and age-related blindness. Mytos is set to transform the landscape of cure development.Currently operational in multibillion-dollar biotech firms across both coasts of the United States, we have successfully secured $19 million in funding to expedite our market entry and boost product development. Next year, neurons cultivated using our machines will be introduced into the brains of Parkinson's patients.Our team comprises top-tier professionals, including former engineers from Dyson and scientists published in prestigious journals such as Nature. To learn more about your potential Mytos colleagues, click here.Mytos is proudly supported by Y Combinator, the leading startup accelerator responsible for nurturing successful companies like Airbnb, Dropbox, and Ginkgo Bioworks.

Senior Software EngineerBecome a key player in our mission to revolutionize the shopping and dining experience, where innovation, impact, and growth are at the forefront of everything we pursue. Our Engineering teams tackle intricate technical challenges across a global, three-sided marketplace, constructing and scaling systems that cater to millions of customers, riders, and partners daily.From real-time logistics to robust infrastructure and marketplace optimization, we design, build, and operate technology that fuels Deliveroo’s expansive growth.We seek a Senior Software Engineer to join our London (Hybrid - 3 days from the office) team. In this pivotal role, you will enhance code structure and architecture while leading project planning to maximize efficiency and reliability across our production systems.Familiarize yourself with our Engineering team — discover what motivates us, our work culture, and what you can anticipate.Your ResponsibilitiesHere’s what your day-to-day might encompass:Pursue Technical Excellence: Refine code structure and architecture within your team’s domain, conducting impactful code reviews to ensure quality and scalability.Steer Project Planning: Anticipate dependencies and risks, collaborating closely with Product and Design to ensure seamless delivery of complex features.Enhance Operations: Streamline the maintenance and operation of production systems, fostering visibility, health, and operational readiness.Collaborate & Influence: Cultivate relationships across engineering teams to uncover collaboration opportunities and influence the broader technical roadmap.Mentor & Recruit: Facilitate the personal development of your colleagues through technical mentorship and actively participate in engineering interviews to expand our team.Desired QualificationsOur ideal candidate will bring robust expertise in several of these areas and a willingness to grow in others:Solid Engineering Principles: A strong commitment to crafting readable, well-designed, and thoroughly tested software.Backend Proficiency: Extensive experience in developing web-based applications (we utilize Go, Ruby/Rails, Python, Scala, and Rust).Data Proficiency: Familiarity with data handling and optimization techniques.

About the RoleJoin us at SumUp, where our mission is to connect merchants and consumers, fostering the growth of local communities. With SumUp Pay, we are revolutionizing the banking experience, allowing consumers to effortlessly connect with their favorite small businesses while ensuring merchants enjoy free transactions.SumUp Pay simplifies money management for consumers, providing them with enhanced spending experiences and financial tools that are tailored for today's lifestyle—covering banking, card services, savings, and open banking functionalities.This pivotal engineering role involves taking full ownership of the SumUp Pay iOS application, where you will develop and ensure the quality of features that consumers use daily. You will collaborate closely with Backend Engineers, Product Managers, Designers, and Android Engineers to create polished, reliable, and impactful mobile experiences.

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.

Join Relay, a pioneering force in the evolution of online logistics. With a historic Series A funding round of $35 million, led by Plural, a notable deep-tech investor, Relay is outpacing 99.98% of venture-backed startups. We are building an exceptionally talented team, setting new standards in the logistics sector.Our Mission is to eliminate friction in commerce. High delivery costs are a hidden barrier to e-commerce, influencing what can be sold online and who can participate in the market. We aspire to create a world where goods flow freely among people, ensuring a seamless and inclusive online shopping experience.Our Team consists of approximately 110 members, with over half dedicated to engineering, product, and data roles. We boast 45+ advanced degrees in disciplines such as computer science, mathematics, and operations research. With thousands of data points meticulously captured and analyzed for each parcel, we cultivate a culture of first-principles thinking, robust feedback loops, and a commitment to experimentation.Collaborate with Industry ExpertsDiego Protas – Director of EngineeringDiego specializes in distributed systems and hardware architecture, integrating physical computing with scalable enterprise infrastructure. With experience leading over 170 engineers at Mercado Libre and driving large-scale ML-based inference at Meta, Diego’s dynamic leadership at Relay is setting new benchmarks for speed and reliability.Technical EnvironmentUtilizing Python, Rust, and TypeScript to ensure we employ the best tools for our projects.Developing cross-platform Flutter applications with a focus on exceptional user experience.Operating in a cloud-native environment on GCP, leveraging BigQuery and Cloud Run.Engaging in extensive ML modeling and LLM inference as part of our daily operations.Integrating emerging technologies, including robotics and IoT functionalities.Your Role as a Software Engineer at Relay includes:Taking ownership of complex engineering challenges.

Join our dynamic team at mufginvestorservices as a Senior DevOps Engineer. In this pivotal role, you will drive the implementation of innovative DevOps practices, ensuring seamless integration and deployment of services across our platform. You will collaborate closely with cross-functional teams to enhance our CI/CD pipelines and automate processes, fostering a culture of continuous improvement.As a leader in our IT department, you will guide and mentor junior engineers, shaping the future of our technology stack while optimizing performance and scalability. Your expertise will be crucial in advocating for best practices and driving the adoption of cutting-edge tools.

Join commercetools as a Senior Backend Engineer, where you will play a pivotal role in shaping innovative backend solutions using TypeScript. Collaborate with cross-functional teams to create scalable and resilient microservices that empower our clients to deliver exceptional digital commerce experiences.

Senior Software Engineer I at Checkout.com, London About Checkout.com Checkout.com supports digital payments for companies like eBay, ASOS, Klarna, Uber Eats, and Sony. Headquartered in London, the company operates across six continents and focuses on simplifying online transactions for businesses worldwide. What You’ll Do Senior Software Engineers at Checkout.com help design and build advanced payment technologies. This work directly improves merchant capabilities and supports the company's global mission. The role involves: Leading projects that align with strategic goals Collaborating with teams that prioritize customer needs Bringing technical insight and creativity to solve new challenges Influencing engineering priorities and direction What Sets This Team Apart Innovation and performance drive the culture at Checkout.com. Every team member plays a part in shaping the future of fintech. Senior engineers are trusted with real responsibility and the chance to make a visible impact. Location This position is based in London. Learn more about the company at Checkout.com.

About Checkout.com Checkout.com is a global payment solutions provider, trusted by brands such as eBay, ASOS, Klarna, Uber Eats, and Sony. The company streamlines online checkout, making transactions smooth for businesses around the world. With headquarters in London and 19 offices across six continents, Checkout.com supports billions of transactions each year. The team focuses on making digital payments reliable, helping businesses grow and keeping customers satisfied. Role Overview: Senior Analytics Engineer Based in London, the Senior Analytics Engineer will drive insights into product performance and create a single source of truth for key metrics. Working closely with product managers and data scientists, this role helps shape the direction of Checkout.com's products. The position involves designing and launching new data products, with responsibility for the full lifecycle, from initial concept to implementation and ongoing operations. What You'll Do Build high-performance, reusable, and scalable data models for the data warehouse using dbt and Snowflake. Design and develop Looker structures (explores, views, and more) to enable self-service analytics across the company. Work with data analysts and business teams to understand needs and deliver analysis-ready data. Continuously discover, transform, test, deploy, and document data sources and models. Support and help define data warehouse governance, focusing on data quality, testing, documentation, coding best practices, and peer reviews. Identify ways to improve and optimize analytics engineering workflows and platforms. Location This position is based in London. Learn more about Checkout.com at Checkout.com.

Join us as a Senior AI FullStack Engineer at a rapidly expanding AI FinTech company, where your expertise will help shape the future of finance.About Us:We develop and deploy AI-powered tools and intelligent agents throughout their entire lifecycle, from conception to production.Our systems are designed with AI at their core, not as an afterthought.Transform experimental concepts into production-ready features that impact real users.Take ownership of projects from problem identification to user adoption.Collaborate closely with engineering and product teams to seamlessly integrate AI into daily operations.Establish effective methodologies for implementing AI in production environments.We are on a mission to create an AI-native bank tailored for ambitious businesses.Your Contribution:Train and refine large-scale audio and multimodal models.Design and execute experiments focused on architecture, data mixtures, and training strategies.Develop and enhance audio data pipelines.Optimize inference speed, latency, and overall production readiness.Deploy models in end-to-end, low-latency settings.Create meaningful evaluation metrics that go beyond standard benchmark scores.Work collaboratively with both research and engineering teams.This role is hands-on, bridging the gap between research and real-world application.Technical Environment:PythonLarge Language Models (LLMs) and AI toolsPostgreSQL, BigQueryTypeScript, ReactAWS, GCPDocker, Terraform, GitHub(Detailed technical stack will be shared during the interview process)Your Expertise:5+ years of experience in building and deploying production systems.Full-stack or deep backend/platform engineering skills.AI-native mindset: you leverage AI in your daily work and think in terms of agents, workflows, and automation.Product-focused: your priority is user adoption over mere output.You excel at transforming complex challenges into scalable solutions.Bonus Skills:Experience in financial technology.Familiarity with cloud services and infrastructure.Contributions to open-source projects.

Join Aircall, a revolutionary unicorn in the AI-powered customer communications sphere, trusted by over 22,000 companies globally to enhance revenue, expedite issue resolution, and empower customer-facing teams. We are transforming the landscape of customer communications by integrating voice, SMS, WhatsApp, and AI into a unified workspace.Our growth is driven by a straightforward principle: to enable teams to work smarter, not harder. Our AI Voice Agent automates routine calls, while AI Assist simplifies post-call tasks, and AI Assist Pro provides real-time insights, allowing individuals to excel in their roles. This synergy results in increased revenue, quicker resolutions, and scalable teams.Headquartered in Paris, with a solid presence in North America anchored in Seattle, Aircall also has teams in vibrant cities such as Madrid, London, Berlin, San Francisco, New York City, Sydney, and Mexico City. Our product is beloved by customers, and we are rapidly scaling, supported by top-tier investors and continuous AI advancements across multiple product lines.At Aircall, you'll become part of a dynamic company. We are ambitious, focused on product development, and execution-oriented, with a clear impact, swift decision-making, and genuine growth opportunities.Our Work Culture at Aircall: We prioritize customer satisfaction, leverage data for decision-making, and are dedicated to delivering significant outcomes. We cherish ownership, continuous improvement, and thoughtful agility. If you thrive in a collaborative, fast-paced environment where trust and impact are essential, you will thrive here.Position Overview:As a Senior Backend Software Engineer, you will take charge of designing, developing, deploying, and maintaining essential features that enhance customer value on our voice platform.You will be expected to advocate for best practices, mentor team members, and contribute to the broader Engineering community as part of your daily responsibilities.Quality, excellence, and agility are at the core of our delivery process, and you will play a pivotal role in elevating these standards.Utilizing a diverse array of backend technologies tailored to specific needs, all hosted on AWS, we create resilient services that deliver added value on top of voice while fully integrating with our customers' critical business tools (CRM, Helpdesk, E-Commerce, etc.).

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 Lendable’s MissionLendable is dedicated to revolutionizing the credit landscape by creating cutting-edge technology that empowers individuals to access credit and save money effectively. As one of the UK’s newest unicorns, we are rapidly establishing ourselves among the fastest-growing fintech companies.With a dynamic team of over 700 professionals, we have been profitable since 2017 and are supported by esteemed investors including Balderton Capital and Goldman Sachs. Our customer satisfaction speaks volumes, boasting a remarkable rating of 4.9 from tens of thousands of reviews on Trustpilot.Having successfully reconstructed the Big Three consumer finance products—loans, credit cards, and car finance—we are committed to providing our customers with quick access to funds. Our vision extends to expanding into major markets like the UK and US, targeting outdated banking systems and improving user experiences.Why You Should Join UsOwnership: Take charge from day one and influence Lendable’s trajectory.Exceptional Teams: Collaborate with a small group of innovative individuals dedicated to solving complex challenges and improving existing solutions.In-House Technology: Develop top-tier technology using machine learning and AI to optimize processes and enhance efficiency.Role OverviewWe are in search of a hands-on AI Engineer to bolster our Internal Automation team. Your role will focus on enhancing the efficiency of various internal teams, including Finance, Compliance, Product, and QA, through the development of AI-driven tools and automated workflows. Working within a compact team of four engineers and one project manager, you will play a vital role in streamlining operations, minimizing friction, and allowing colleagues to devote more time to high-priority tasks.

About MoneyboxMoneybox is an award-winning financial app designed to help you transform your financial journey. We seamlessly integrate saving, investing, home-buying, and retirement planning into one user-friendly platform, empowering you to achieve your financial aspirations and build wealth, regardless of your starting point.Job OverviewJoin our Data and Insights team, where we cover a diverse range of functions including analytics engineering, reporting, insightful analysis, decision-making, data science, and machine learning. Our mission is to provide comprehensive understanding of customer behaviors, app interactions, product utilization, and priorities. This crucial role ensures that Moneybox is well-equipped to fulfill its vision of empowering customers in their financial journeys.