Software Engineer, Back End Leaning (Tech Lead Level)

Join the Kroo TeamAt Kroo Bank, we are on a mission to redefine banking by creating a customer-centric financial institution that emphasizes responsible money management and leverages cutting-edge technology to simplify and enhance everyday banking experiences. As a fully regulated bank in the UK, we are supported by dedicated long-term investors and are rapidly expanding our customer base as we pursue ambitious goals. We prioritize speed, thoughtful decision-making, and high standards in product development, risk management, and employee welfare.Your Role and Responsibilities:As the Mobile Platform Tech Lead, you will be pivotal in fortifying the technical framework of our mobile banking application, ensuring it is secure, high-performing, reliable, and scalable to meet evolving customer and product demands. You will lead a dedicated mobile platform team and collaborate closely with engineering, product, design, and compliance teams to uphold exceptional technical standards within our React Native ecosystem and its associated native integrations. Your key responsibilities will include:Mentoring the mobile platform team, offering technical guidance, coaching, and effective prioritization of platform initiatives.Establishing, executing, and maintaining engineering standards focused on mobile security, observability, performance, resilience, and release quality.Being a hands-on technical leader in developing and maintaining shared mobile platform capabilities using React Native and TypeScript.Collaborating on architectural decisions regarding React Native, native modules, and integrations across Kotlin, Swift, Objective C, and Java.Working alongside product feature teams to ensure smooth release processes that meet quality benchmarks and comply with regulatory requirements.Enhancing automated testing practices, including unit, integration, and end-to-end testing to bolster confidence in release quality.Improving mobile engineering workflows through enhancements to continuous integration, continuous delivery, and deployment processes.Overseeing production incident management and release activities, ensuring timely resolutions and effective communication.Collaborating with design and product teams to refine and maintain shared UI components, platform standards, and mobile design system capabilities.Implementing and continuously improving mobile observability tools, analytics, logging, and exception monitoring to support stability and informed decision-making.Championing secure application development practices and facilitating compliance within a regulated banking environment.Identifying and pursuing opportunities to enhance platform stability, developer productivity, and the long-term maintainability of the mobile application.

About Checkout.com Checkout.com builds digital payment solutions for businesses worldwide. From our London headquarters, we support clients such as eBay, ASOS, Klarna, Uber Eats, and Sony, helping them process billions of transactions each year. Our platform aims to remove friction from payments and help partners grow. With 19 offices across six continents, our team brings together a wide range of perspectives and expertise. We focus on driving change in fintech and shaping the future of payments. Lead Mobile Developer Role The Lead Mobile Developer will guide the development of Checkout.com's flagship mobile app. This role covers hands-on coding, setting technical direction, and shaping the app’s architecture. The goal: deliver a high-performance, user-focused experience that scales. This position calls for a mobile specialist who can influence technology choices and component strategies. Strong experience building mobile-first consumer applications is essential. Key Responsibilities Design and implement the first version of our mobile app using React Native, with room to adapt the tech stack as needed. Make key architectural decisions on navigation, state management, animations, and performance to support scalability and maintainability. Champion mobile user experience and performance, deciding when to use React Native or native development approaches. Work closely with backend and product teams to deliver seamless, end-to-end experiences. Define core engineering practices for mobile, covering coding standards, CI/CD, testing, and monitoring. Learn more about us at Checkout.com.

About FreshaFresha stands as the premier marketplace platform for beauty and wellness, trusted by millions of consumers and businesses globally. Currently, over 130,000 businesses and more than 450,000 stylists and professionals leverage Fresha, having processed over 1 billion appointments to date.Headquartered in London, United Kingdom, Fresha operates 15 global offices throughout North America, EMEA, and APAC.Our platform empowers consumers to discover, book, and pay for beauty and wellness appointments with local businesses. At the same time, beauty and wellness professionals utilize our all-in-one platform to streamline their operations through intuitive business software and innovative financial technology solutions.Fresha’s ecosystem equips merchants with everything necessary to operate their business smoothly, including appointment bookings, point-of-sale systems, customer records management, marketing automation, loyalty programs, beauty product inventory management, and team oversight.Our consumer marketplace enhances revenue opportunities for partner businesses by harnessing the power of online bookings and automated marketing through mobile applications, alongside advanced integrations with major tech brands like Instagram, Facebook, and Google.Role OverviewAs Fresha embarks on its next phase of global expansion, the Platform Engineering team plays a crucial role in fostering rapid, secure, and sustainable growth.In the capacity of Platform Engineering Team Lead, you will bear responsibility for the team's performance and outcomes, ensuring consistent delivery, proactive communication, robust system architecture, and adherence to operational standards.In light of the swift advancement of AI and automation, this is an exceptional opportunity to redefine platform development and operations, minimizing manual effort, enhancing reliability, and empowering smarter, faster engineering decisions.You will contribute to Fresha’s growth by promoting infrastructure readiness, aligning platform strategies with business objectives, and applying AI where it can provide tangible operational advantages.We place a strong emphasis on customer impact, even within internal projects, as platform enhancements ultimately serve to enrich the customer experience.

Join Algolia, a trailblazer in AI Search technology, empowering over 17,000 businesses with fast and predictive search experiences at scale. We handle more than 30 billion search requests weekly, outpacing competitors like Microsoft Bing and Yahoo.After securing $150 million in Series D funding in 2021, our valuation soared to $2.25 billion, allowing us to continuously enhance our leading platform and serve esteemed clients such as Under Armour, PetSmart, Stripe, Gymshark, and Walgreens.We are on the lookout for a seasoned Principal Product Manager to spearhead our Tech Platform organization—a pivotal role vital for Algolia's future. You will oversee three diverse teams across various locations:AI Platform: Enhancing the speed of AI development iterations at Algolia.Engine & Infrastructure: Delivering a scalable, developer-friendly API platform that fosters innovation while ensuring our infrastructure can support all customers and feature advancements.Platform SDK: Facilitating easy development and extension of solutions by Algolia developers using our infrastructure.Your responsibilities will include managing the platform that underpins our current search functionalities and future infrastructure developments. The Tech Platform will accelerate internal development and ensure our infrastructure scales effortlessly, catering to businesses of all sizes—from startups to large enterprises. This core platform will drive everything Algolia operates, including our transition into the agentic realm.

About the Team Join SumUp's Mobile Platform Squad as a Senior Android Engineer and play a pivotal role in the development of our rapidly expanding Android ecosystem. With substantial investments in our flagship products, we empower our feature teams to create world-class experiences. You will be crucial in establishing a robust foundation that allows over 40 Android engineers to maximize their productivity and efficiency, directly influencing the future of mobile payments for millions of merchants. Our engineering culture promotes autonomy, collaboration, and innovation. Your contributions will have a significant impact, connecting mobile engineers across the organization. This role is vital for: Eliminating Bottlenecks: Strategically addressing and resolving critical bottlenecks in CI/CD pipelines and app infrastructure that may hinder the delivery of new features and enhancements. Enhancing Developer Experience: Designing and implementing state-of-the-art tools and infrastructure that markedly improve the developer experience, reduce build times, and streamline workflows for our extensive Android engineering team. Modernizing a Mature Codebase: Leading the evolution and enhancement of our Android codebase, with an emphasis on code simplicity, maintainability, and overall health across all SumUp Android products. Ensuring Product Stability & Scalability: Offering foundational support and guidance across our diverse Android product portfolio, ensuring consistency, reliability, and smooth operation for products such as Register, Android Terminal, SumUp Go, and the Merchant app. What You’ll Do: Strategic Impact: Lead initiatives to shape the core experience for both merchants and our internal Android developers, directly contributing to SumUp's ambitious Android product roadmap. Technical Leadership: Architect, develop, and maintain critical tools, frameworks, and infrastructure that significantly enhance the consistency, scalability, and reliability of our mobile applications, ensuring no adverse effects across our various Android products. Performance & Efficiency: Drive initiatives in CI/CD systems, advanced developer tooling, and performance optimizations to dramatically streamline mobile development processes and reduce build times for our expanding team. Codebase Evolution: Proactively address technical debt, enhance code health, and introduce best practices to a complex, mature codebase, ensuring its long-term viability.

Join our dynamic team at Octopus Energy as an Engineering Lead for our Analytics Platform. In this pivotal role, you will spearhead innovative engineering projects, guiding a talented team to enhance our analytics capabilities. Your expertise will drive the development of cutting-edge solutions that empower our data-driven decision-making processes.We are looking for a passionate leader who can inspire and mentor team members, ensuring the successful execution of engineering initiatives. You will collaborate closely with cross-functional teams to deliver robust and scalable analytics platforms that meet our business objectives.

About Swap Swap builds the infrastructure for modern agentic commerce. The platform connects backend operations with a new kind of storefront, using AI to help brands manage and grow their business globally. Swap’s platform brings together cross-border operations, tax management, returns, demand forecasting, and a storefront powered by agentic technology. Merchants get real-time data, transparency, and tools to act quickly and decisively. The company values clarity, creativity, and shared ownership as it rethinks how global commerce works. Role Overview: Staff Software Engineer in Test – QA Platform Lead Swap is hiring a Staff Software Engineer in Test to lead the development of its internal QA Platform. This role focuses on building the tools and infrastructure that help engineering teams ship reliable software, faster. The QA Platform Lead will design, build, and maintain the internal platform, including frameworks, automation pipelines, and AI-assisted workflows, that Swap engineers rely on every day. The impact of this work will be measured by how widely the platform is adopted, the developer experience, and the speed at which teams can deliver quality software. Collaboration is key. The role works closely with the current SDET, who created the existing end-to-end testing framework. Together, you’ll expand on this foundation and shape a broader platform vision. The QA Platform Lead will set strategy, manage the roadmap, and make decisions about priorities and architecture. Main Responsibilities QA Platform Strategy and Roadmap Define the vision, strategy, and roadmap for the QA Platform, setting priorities that maximize impact. Make architectural and tooling decisions that influence quality practices across Swap’s engineering teams. Track adoption, usage, and developer satisfaction to ensure the platform is used and valued, not just built. Develop Reusable Quality Tools and Infrastructure Design and implement reusable tools, frameworks, and self-service quality infrastructure to help engineering teams deliver with confidence and less friction. Location This role is based in London.

Kraken is building a new Platform Support Engineering function within its Platform organization in London. This group will serve as the main contact for internal platform issues and requests, aiming to streamline workflows and ease the daily operational burden on core Platform Engineers. Role overview The Lead Platform Support Engineer will establish and guide this team from the ground up. This includes defining how requests are received and processed, setting up support procedures, and mentoring a small, distributed group of engineers. The role involves both hands-on operational work, such as monitoring ticket quality and response times, and strategic improvements like automation, documentation, and platform enhancements to reduce incoming support demand. What you will do Build and lead the Platform Support Engineering function. Design the intake model for requests and implement support processes. Mentor and support a growing team working across multiple time zones. Balance day-to-day operational tasks with long-term improvements to support efficiency. Collaborate with Platform leadership to ensure consistent, reliable support for engineers across Kraken. Team focus The Platform Support team will handle triage of incoming issues, manage routine requests, and drive improvements to internal processes. By taking on these responsibilities, the team enables Platform Engineers to concentrate on delivering technical solutions for Kraken’s global energy technology platform.

Job Overview: Lead Product Developer (Tech Lead)Location: London (Hybrid - 3 days in-office)Reporting to: Delivery Lead / Client Services DirectorAbout Us:At AND Digital, we are a forward-thinking technology company committed to accelerating digital delivery and bridging the digital skills gap. Since our inception in 2014, we have been instrumental in enabling organizations to create superior digital products and cultivate robust digital teams.We believe in making a significant impact for our clients through our unique regional offices, known as 'Clubs', which foster strong partnerships and prioritize client needs with dedicated local teams.This innovative approach has propelled our success, reflected in our impressive organic growth since 2014. With over 1,300 talented individuals across Clubs in the UK, Europe, and the USA, we are on a mission to expand globally in the coming years.Join us in our vision to close the global digital skills gap!The RoleWe are in search of a Lead Product Developer to spearhead a significant project for one of our key clients, a global leader in the media and entertainment sector. In this position, you will not only oversee project delivery but also serve as the technical cornerstone of a vital platform that delivers advertising solutions and audience insights globally. This opportunity is ideal for a proactive technical expert who thrives in scaling sophisticated cloud-native architectures while nurturing a high-performance culture across dispersed teams.Key Responsibilities1. Technical Excellence & ExecutionHands-on Engineering: Lead by example as you continue to engage in hands-on development, writing high-quality code in Java and React, while ensuring the platform maintains scalability, security, and performance.Architectural Stewardship: Collaborate with Technical Architects to ensure the sustainability of our AWS-based ecosystem, balancing rapid delivery with technical integrity.Engineering Culture: Establish the benchmark for engineering practices, from robust CI/CD pipelines to thorough code reviews, fostering technical pride within the team.2. Team Leadership & EnablementDistributed Team Growth: Act as a liaison between our London stakeholders and Nearshore development teams, creating a cohesive “one-team” atmosphere that guarantees high code quality and consistency across regions.Mentorship: Encourage the development of ANDis and client developers, promoting a culture of high achievement through coaching and collaborative reviews.3. Stakeholder ManagementCollaborative Influence: Navigate a complex landscape of stakeholders...

Role Overview Capimoney is looking for a Tech Lead in London to guide technical direction and support a team of developers. This role focuses on building scalable solutions and maintaining strong quality and performance standards within the technology stack. Key Responsibilities Lead and mentor a team of developers on project delivery Design and architect scalable technology solutions Work with cross-functional teams to develop products that meet client needs Uphold high standards for code quality and system performance What You'll Bring Experience in software development and technical leadership Ability to collaborate across teams and communicate clearly Strong problem-solving skills and attention to detail Location This position is based in London.

Tech Lead - Decision TechnologyHybrid position located in London / Remote within the UKJoin Our Team as a Tech LeadAt iwoca, you will spearhead the advancement of our technology and infrastructure, which underpins our credit decision-making and model training processes. This includes innovating feature generation and model evaluation systems. Your role will involve enhancing critical systems, shaping iwoca’s technical vision, and collaborating with cross-functional teams to deliver cutting-edge, data-driven solutions.About iwocaSmall businesses operate in dynamic environments where opportunities can arise unexpectedly, and cash flow challenges can emerge at any moment. To thrive and expand, SMEs require finance that is both flexible and responsive.This is why iwoca was established. Our advanced technology, data-driven insights, and exceptional customer service empower business owners to act swiftly with confidence and control, precisely when it matters most.We have already facilitated over 100,000 businesses with more than £4 billion in funding. Our dedicated team is passionate about enabling more SMEs to succeed by providing access to better finance and services that simplify business operations. Our ultimate goal is to support one million SMEs in their pivotal moments, creating a lasting impact on the communities and economies they enhance.The TeamThe LoL-Tech team is dedicated to developing and maintaining the technology that trains, deploys, and executes iwoca’s credit decisioning models. This team collaborates closely with analysts (the League of Lending, or LoL) who develop credit models and systems to assess our lending processes, ensuring iwoca continues to push the boundaries of analytical capabilities.Your RoleAs the Tech Lead, you will guide a technical team responsible for delivering essential infrastructure for model development and live credit decisioning. This includes fetching external data, developing and maintaining a feature service for model feature computation, and creating a robust platform for model evaluation and training. You will lead a team of developers and work closely with data scientists to build and realize a unified vision for the future of the team.

About Gigs Gigs builds a platform that lets tech companies add global mobile connectivity to their products. The goal: make integrating telecom as simple as integrating payments. By automating provisioning and removing telecom hurdles, Gigs helps businesses from fintechs to HR platforms offer mobile services without the usual complexity. The team numbers around 100 people, spread across the US and Europe. Gigs has raised close to $100 million from investors including Ribbit Capital, Google, and Y Combinator. The company brings together engineers and product leaders from places like Stripe, Airbnb, and Shopify, all focused on solving technical and regulatory challenges in telecommunications. Curiosity, creativity, and a drive to shape the future of telecom matter here. Gigs welcomes people who want to tackle tough problems and make an impact. Core Values Speed: Move quickly and deliver. Ambitious deadlines are the norm, and each week counts. Ownership: Spot a problem? Step up and fix it without waiting for approval. Customer Obsession: The success of customers is central to every decision. Ambiguity: Work often involves making decisions with incomplete information. Judgment and instinct matter. First Principles: Question assumptions and dig into the reasons behind how things are done. Role Overview: Senior Platform Engineer (London) This role sits at the heart of Gigs’ technical operations. Senior Platform Engineers design, build, and maintain the infrastructure and developer tools that power the company’s connectivity and payments platform. The work enables product teams to ship faster and more reliably, supporting growth at scale. The Foundation team owns the core systems every Gigs engineer depends on: CI/CD pipelines, cloud infrastructure, observability, deployment tools, and shared platform services. Taking on complex infrastructure challenges is a key part of the job, with a focus on keeping systems efficient and dependable.

Wintermute Trading is a leading force in algorithmic trading for digital assets, providing liquidity across major cryptocurrency exchanges and platforms. The company works with both established blockchain projects and traditional financial institutions entering the crypto space. In addition to trading, Wintermute supports the broader blockchain ecosystem through investments, partnerships, and project incubation. Founded in 2017 by industry veterans, the team combines technical depth with the agility of a startup. Role overview The Tech Lead for Product Engineering will be based in London and will take a hands-on leadership role in developing the NODE platform. This platform is designed for institutional clients, enabling seamless crypto trading experiences. The position offers direct influence over both the direction and execution of the platform, working in a cross-functional setting. What you will do Lead the development of the NODE trading platform, focusing on institutional users Collaborate with engineers, designers, core developers, and stakeholders Define, build, and deliver a secure, scalable, and high-performance trading product Work across teams to align the platform with business and technical objectives Location This role is based in London.

Role Overview Wise is looking for a Senior Engineering Team Lead focused on Data Platforms to join the London office. This role centers on guiding a skilled team of engineers and strengthening the company’s data infrastructure. The position offers the chance to shape how Wise manages and scales its data capabilities. What You Will Do Lead and support a team of engineers working on Wise’s data platform Create an environment where collaboration and knowledge sharing are standard practice Drive improvements in platform reliability and performance Champion engineering best practices and help the team adopt them Work closely with stakeholders to ensure the platform meets operational needs Location This position is based in London.

About the Role Saturn is looking for a Platform Engineer in London. This role focuses on building and improving the platforms that power our products. The work centers on designing systems that scale, run efficiently, and support a growing user base. What You Will Do Develop and optimize core platform components Work closely with other engineers to deliver reliable systems Contribute to the design of scalable solutions that handle increasing demand Team and Collaboration Platform Engineers at Saturn collaborate with a skilled engineering team. The group values practical solutions and a shared commitment to quality.

Role overview Speechify is seeking a Tech Lead to join the Android Core Product team in London. This position involves leading a team of engineers and shaping the direction of core Android features. The work done by this group plays a key role in the evolution of Speechify’s product. What you will do Oversee the development of new features and ongoing improvements for Speechify’s Android app Mentor engineers and support their technical growth Maintain high coding standards and encourage best practices throughout the team Foster collaboration and creative problem-solving within the group Requirements Deep experience with Android development Background in leading or mentoring engineering teams Ability to set technical direction and maintain quality standards Interest in building products that make a difference, working closely with others Location This role is based in London, United Kingdom.

Join Our Mission at OmneaAt Omnea, we are transforming the way enterprise businesses function, focusing on the most challenging processes in procurement. A single purchase can take months, generate over 50 emails, and require input from Finance, Legal, Security, and IT for approval.With a remarkable $75M investment from Khosla Ventures, Insight Partners, and Accel, we are set to change this paradigm. Our AI-driven platform seamlessly integrates every individual, step, and system, facilitating quick, secure, and efficient purchasing. We offer a unified platform for requests, automated approvals, risk assessments, and comprehensive spend visibility.This is a $7B+ untapped market, and our growth reflects the immense opportunity: we have achieved a tenfold increase in ARR to double-digit millions within just 18 months, earning the trust of global companies like Spotify, MongoDB, Monzo, and Albertsons. Omnea has recently been recognized as the 4th fastest growing startup in Europe.Our team boasts experience from Tessian (a cybersecurity tech firm backed by Sequoia, Balderton, Accel, and acquired post-Series C). Our members include former founders and operators who have built unicorns, delivered exceptional products, and executed at the highest standards. You will collaborate with leaders like Ben, Abs, Sabrina, and Rebe.Discover More About Life at Omneahere.Why We Need a Platform Engineer NowOur deployment frequency is several times a day, serving enterprise clients who demand unwavering reliability, and our growth trajectory is tenfold. The platform team is responsible for the infrastructure, tooling, and developer experience that supports all of this. We are looking to add a hands-on Platform Engineer to enhance our CI/CD processes, scale our serverless infrastructure, improve observability, and empower every product engineer to achieve greater effectiveness.

At OakNorth, we are dedicated to empowering the most ambitious businesses in the UK. Since our inception in 2015, we have provided over $21 billion in loans across the UK and US, facilitated the creation of more than 58,000 new homes and 36,000 jobs, and supported countless personal savers, all while contributing to the growth of the UK economy. Join us in making a tangible impact!

THE ROLEAs a Client Delivery Lead (CDL) at Telefónica Tech, you will be a pivotal senior leader in client relations, dedicated to fostering trusted partnerships, driving account expansion, and ensuring seamless delivery outcomes. Positioned at the crossroads of Delivery and Business Development, you will serve as a strategic advisor, collaborating with key client executives to shape their strategies, co-create transformation roadmaps, and leverage Telefónica Tech's comprehensive technology offerings to achieve tangible business results. While this role encompasses all service lines at Telefónica Tech, it particularly emphasizes Data & AI initiatives, often initiating engagements that empower clients to harness data as a strategic asset, modernize their platforms, and derive value through analytics, governance, and automation. This role demands exceptional commercial insight, profound client empathy, and the capability to align strategic vision with operational effectiveness.Client Partnership & StrategyEstablish and cultivate long-lasting, trusted relationships with client executives, influencing decisions at the C-suite and board levels.Formulate and implement a multi-year account strategy that aligns with both client goals and Telefónica Tech’s growth aspirations.Act as a trusted advisor, guiding clients through their digital transformation across Cloud, Data & AI, Cyber Security, and Business Applications.Advocate for the client's interests within Telefónica Tech, ensuring their objectives translate into actionable results.Sales & Business DevelopmentCollaborate with Sales Executives and Service Lines to drive revenue growth and overall profitability.Identify and pursue cross-sell and up-sell opportunities across Telefónica Tech’s practices and service lines.Lead pre-sales solutioning and commercial strategy in conjunction with Sales Executives, Solution Consultants, and Practice Heads/CTOs.Develop compelling, outcome-focused proposals and presentations that clearly articulate client value and measurable impact.Contribute to account growth planning, innovation initiatives, and client referenceability efforts.Delivery & Execution OversightMaintain comprehensive accountability for delivery performance and client satisfaction across all projects and services within your accounts.Collaborate with project and service managers to ensure deliverables align with scope, schedule, budget, and quality benchmarks.Facilitate governance forums, such as quarterly business reviews (QBRs) and client steering meetings, to uphold alignment and transparency.Proactively identify and mitigate risks to safeguard both client trust and Telefónica Tech’s financial performance.Financial & Operational StewardshipManage financial performance and operational metrics to ensure sustainable account growth.