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Join Horizontal Digital as a Senior Tech Lead in London, where you will play a pivotal role in shaping technology strategies and leading a team of talented engineers. You will collaborate with cross-functional teams to design and implement innovative solutions, ensuring the delivery of high-quality projects that meet client needs.
Horizontal Digital is a forward-thinking digital transformation agency dedicated to helping businesses innovate and thrive in the digital landscape. Our diverse team of experts is committed to delivering exceptional solutions that enhance user experiences and drive organizational success.
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iwoca Ltd.
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 …
About iwocaAt iwoca, we recognize that small businesses need to stay agile in a fast-paced environment where opportunities can arise unexpectedly. Cash flow challenges can emerge overnight, and that's why we provide financing solutions that are as flexible and responsive as our clients.Our innovative technology, combined with our data-driven approach and exceptional customer service, empowers business owners to make informed decisions with speed and confidence. We have successfully facilitated over £4 billion in funding for over 100,000 businesses, and we are committed to supporting even more SMEs in their critical moments.Our mission is to assist one million SMEs in achieving their goals, creating a lasting impact on local communities and economies.The Credit Risk TeamOur Credit Risk team is responsible for the development and maintenance of the technology and models that drive our lending decisions. This includes credit scoring, scorecard development, and portfolio monitoring, all aimed at maximizing lending volume while managing risk effectively.With nine data scientists, four engineers, and two strategy analysts, our team collaborates to analyze historical data, build robust models, and translate insights into actionable lending decisions.Your Role as Tech LeadAs the Tech Lead, you will oversee the engineering systems that support Credit Risk modeling at iwoca. Your focus will be on enhancing the platform, pipelines, and production systems rather than directly building models. This role combines hands-on technical leadership with line management and individual contribution.Responsibilities:Guide a team of four engineers in delivering high-quality solutions for the modeling platform and its associated systems.Elevate engineering standards across modeling systems with an emphasis on reliability, observability, and safe changes.Define the technical direction by comprehending interconnected systems and workflows to prioritize the right challenges.Individual ContributionMaintain an active role in the codebase, particularly during periods of ambiguity or complex problem-solving.
Decisal Ltd
Join Decisal, where we craft innovative software solutions that empower airlines worldwide to optimize their planning and scheduling processes. As we expand our product offerings, we're on the lookout for a dedicated and talented C++ Software Engineer to become a pivotal member of our vibrant team.In this role, you will be instrumental in designing and developing state-of-the-art software applications. You will engage with clients to implement new features and refine existing systems, enabling you to work on projects that significantly influence our customers and the aviation industry.We pride ourselves on fostering a collaborative and innovative work culture that values your creativity and recognizes your contributions. Decisal Ltd is dedicated to providing a nurturing and inclusive workplace that encourages both personal and professional growth.If you are a driven individual with a solid foundation in C++ programming and a passion for delivering high-quality software solutions, we invite you to apply!
Horizontal Digital
Join Horizontal Digital as a Senior Tech Lead in London, where you will play a pivotal role in shaping technology strategies and leading a team of talented engineers. You will collaborate with cross-functional teams to design and implement innovative solutions, ensuring the delivery of high-quality projects that meet client needs.
Capimoney
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.
Join Helsing as a Tech Lead Support Specialist in the Maritime sector, where you will play a crucial role in leading technological advancements and supporting our innovative projects. You will collaborate with a passionate team dedicated to revolutionizing maritime technology, ensuring our systems are efficient, reliable, and cutting-edge.
Kroo Bank
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.
LemFi (Series B) is on a mission to redefine the financial experience for the Global South.We believe that relocating to a new country should not equate to starting anew. Our dedicated team of over 400 professionals, spread across 20+ countries, is crafting a comprehensive financial ecosystem that enables immigrants to maintain connections with their homeland, establish financial stability, and foster wealth, irrespective of their origin or residence.What initially began as a platform for swift and cost-effective remittances has now transformed into a holistic solution encompassing multi-currency accounts, payment systems, credit facilities, and pathways for sustained financial growth.With millions of users globally, we facilitate over $1 billion in transactions monthly across 30+ countries, demonstrating that financial opportunities should not be constrained by borders.Your RoleAs the Marketing Technology Lead, you will serve as the architect of our performance optimization engine. Your primary goal will be to ensure that all investments in global user acquisition are traceable and that our conversion funnel operates without any leaks. You will establish the framework necessary to attribute cross-border transfers back to their origins and enhance the journey to the 'First Send'.Your Contributions Will IncludeFull-Funnel Attribution Design: Oversee a multi-touch attribution (MTA) model that accurately represents the intricate P2P journey, encompassing Web-to-App transitions, cross-device interactions, and referral cycles.Server-Side Tracking Leadership: Implement a transition to server-side GTM or Segment to circumvent ad-blockers and privacy constraints, ensuring absolute precision in tracking 'Transaction Funded' events.Event Mapping & Taxonomy Management: Take ownership of the global event dictionary to ensure consistent triggering of events such as 'KYC_Started', 'KYC_Approved', and 'Transfer_Initiated' across iOS, Android, and Web platforms.Deep Linking Optimization: Execute deferred deep linking (utilizing AppsFlyer or Branch) so that users arriving from specific corridor advertisements (e.g., USD-to-PKR) are greeted with the correct currency pairs instantly.Retention Trigger Architecture: Develop 'Liquidity Alerts' that send automated, personalized push notifications when a user's sending habits deviate from their usual patterns.Experimentation Promotion: Handle the technical aspects of A/B testing (e.g., Optimizely, VWO) and conduct 'Lift Studies' to substantiate the effectiveness of new initiatives.
auror is hiring a Recognition Technology Project Lead in London. This role centers on leading projects that use advanced recognition technologies to improve the company's products and services. The position involves working closely with teams from different parts of the business to deliver solutions that support auror's goals. Role overview The Recognition Technology Project Lead manages initiatives that focus on recognition systems. The work includes planning, coordinating, and guiding projects from start to finish. Success in this role means delivering results that make a measurable impact on auror's technology and business outcomes. Collaboration This position works with cross-functional teams, bringing together expertise from various departments. Effective communication and teamwork are essential to ensure that project goals align with broader company objectives.
Resonate-Tech
About UsAt Resonate-Tech, we are committed to integrating intelligent and connected technology into the core of railway operations, enhancing performance, efficiency, and fostering innovation across the entire network.Our vision is both ambitious and transparent: to be the reliable partner spearheading the modernization of railway operations through intentional innovation. We are not merely developing technology; we are pioneering the future of railway systems.We gauge our success by the 'Resonate Test'—the moment every Route and Operations Team acknowledges, 'We couldn't operate the railway without Resonate,' and 'Have you consulted Resonate?' becomes the standard query for technology solutions. This is the impact we aim to achieve, and we seek talented individuals who share our enthusiasm for this transformation.If you are eager to be part of something revolutionary, where your contributions directly empower safer, smarter, and more efficient rail operations, we encourage you to apply.Role OverviewThe Technical Business Analyst will be a crucial part of our Software Development team, requiring strong analytical skills, a thorough understanding of software delivery processes, and exemplary communication capabilities.You will take charge of converting intricate operational and technical requirements into precise, actionable specifications, collaborating closely with Product, Design, and Development teams. The emphasis of this role lies not on strategic planning but on providing technical clarity, traceability, and ensuring high-quality execution.Key Responsibilities1. Requirements Ownership & Technical DefinitionDevelop and manage the requirements capture for software development, collaborating with stakeholders to align development efforts with business priorities.Utilize various elicitation techniques such as interviews, workshops, site visits, surveys, and storyboards to gain a comprehensive understanding of operational and technical needs.Be accountable for the quality, completeness, and clarity of requirements throughout the delivery lifecycle.2. Translation of Business Needs into Technical NarrativesConvert business and technical requirements into clear, detailed project narratives, ensuring mutual understanding across engineering and product functions.Document the who, what, and why of each requirement, including acceptance criteria.
AND Digital
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...
The Economist Group
As the Head of Insights & Decision Science for our B2C segment, you will lead a dynamic team dedicated to transforming data into actionable insights. Your role will encompass steering advanced analytical initiatives, enhancing customer understanding, and informing strategic decisions that drive business growth.We are seeking a visionary leader with a strong analytical background, excellent communication skills, and the ability to innovate in a fast-paced environment. You will collaborate with cross-functional teams and leverage data-driven strategies to optimize our offerings and enhance the customer experience.
Wintermute Trading
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.
Speechify
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.
Horizontal Digital
Join Horizontal Digital as a Senior Tech Lead and immerse yourself in a challenging role where your technical leadership will drive innovative solutions. As a key member of our team, you'll oversee project development, mentor junior engineers, and collaborate closely with cross-functional teams. Your expertise will guide our tech stack choices and ensure that our projects meet the highest standards of quality and efficiency.
Role OverviewJoin our dynamic team at Talan as a Lead Software Engineer specializing in Risk Technology. In this pivotal role, you will be instrumental in the design, development, and delivery of robust, enterprise-grade platforms. This position uniquely blends in-depth technical expertise with engineering leadership, ensuring that all solutions are secure, scalable, and production-ready. Key ResponsibilitiesEngage directly in the architecture, development, testing, and deployment of advanced Risk systems and data platforms.Assume ownership of the Software Development Life Cycle (SDLC), producing clean, secure, and maintainable code that adheres to engineering standards.Advocate for engineering excellence through structured code reviews, performance optimization, refactoring, and the adoption of best practices.Lead automation efforts in build, testing, deployment, and environment management processes to enhance reliability and efficiency.Provide technical leadership in architecture, tooling, and development standards, mentoring fellow engineers and fostering a culture of continuous improvement.Design and refine CI/CD pipelines to facilitate secure, stable, and repeatable releases, integrating automated quality controls and environment governance.Collaborate on scalable and resilient system design, assessing emerging technologies to enhance platform capabilities and developer productivity.Champion the integration of AI, ML, and intelligent automation to elevate code quality, testing effectiveness, and release efficiency.Develop comprehensive automated testing strategies (unit, integration, regression, functional) within CI/CD frameworks, partnering with QA teams to expedite defect resolution.Collaborate closely with Product, Project Management, Architecture, Technology Risk, and Production Support teams to synchronize delivery priorities, manage dependencies, and ensure compliance with governance standards. Skills & ExperienceTechnical CapabilitiesProficient in C#, Java, and .NET technologiesExtensive knowledge of web technologies, including ASP.NET, MVC, Razor, and JavaScriptExperienced in scripting and automation using PowerShell, Python, Groovy, or Shell scriptingHands-on experience with CI/CD and source control tools such as Jenkins, TeamCity, Git, and NexusFamiliarity with distributed messaging and communication technologies, including WCF, gRPC, SignalR, and RabbitMQProven experience implementing automated testing within continuous integration pipelines.Professional ExperienceExperience in investment banking environments is essential.A demonstrated history of delivering across the full SDLC.Experience within Risk technology environments is preferred.Ability to engage with stakeholders across Architecture, Governance, Risk, and Production Support teams.
Telefónica Tech
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.
Role overview Speechify seeks a Tech Lead to direct the Web Core Product and Chrome Extension team in London. This role centers on guiding developers as they build and refine web solutions, all with the goal of improving the user experience. What you will do Lead the design, development, and release of web features for both Speechify’s core product and Chrome extension Supervise a team of developers, offering technical guidance and support Establish and uphold strong standards for product performance and quality Define and communicate the technical direction for web and extension projects Location This position is based in London, United Kingdom.
Teza Technologies
Join Teza Technologies as a High-Frequency Trading (HFT) Engineering Lead where you will spearhead the development of innovative HFT algorithms for a diverse range of exchange-traded financial products. Your contributions will directly influence the profitability of our trading strategies in both futures and equities, establishing our competitive advantage in the financial markets.Location: Chicago, IL or London, UK (Hybrid, requiring 3 days in-office)Key ResponsibilitiesDrive the creation of an advanced C++ trading platform, presenting a unique chance to redefine our high-frequency trading infrastructure.Manage and enhance our legacy HFT Java trading platform to ensure high performance, low latency, and reliability across various asset classes.Establish robust protocols and monitoring tools for platform stability and swift issue resolution.Continuously optimize the trading platform for performance and scalability to meet the evolving demands of trading strategies and market opportunities.Oversee system architecture and hardware-software integration, focusing on minimizing latency and maximizing throughput.Lead quantitative analyses on trading infrastructure performance, latency reduction, and system benchmarking.Collaborate with research, trading, and operations teams to ensure seamless integration of trading algorithms and market data feeds within the trading platform.Manage the collection and analysis of trading and infrastructure data to facilitate ongoing improvements and troubleshooting.
Orbital Materials
Join Orbital Materials, where cutting-edge AI technology is revolutionizing data center hardware manufacturing. Our advanced AI capabilities enable us to simulate materials at the atomic level, testing millions of hardware configurations much faster than traditional methods. This allows us to uncover optimal designs that set new benchmarks in the industry, achieving specifications like 1 MW/rack, PUE < 1.04, and 12-week lead times.With every deployment, we gather field data that continuously refines our AI models, resulting in superior hardware and smarter AI. This closed-loop system is enhancing performance with every cycle, making us a pivotal force in the advancement of AI technology.Our primary focus is on data centers, a sector with urgent demands and high specifications. However, the AI-driven development process we've created is versatile and applicable to any complex physical system, making data centers just the beginning of our journey.We have operations in London, Canada, and the USA, and we're forming teams across various disciplines, including ML research, product development, mechanical engineering, and chemical engineering. If you're passionate about blending AI with material science, we want to connect with you.Role OverviewAs the Tech Lead Manager at Orbital, you will take full ownership of our internal AI software platform, Curie, which is utilized by our materials scientists, hardware engineers, and manufacturing engineers to create products for critical industries. Your role will involve designing features such as a unified context graph across materials, engineering, and manufacturing for our AI agents.In addition to leading the technical design and delivery, you will provide guidance and management to the software team, establishing high engineering standards, overseeing projects from prototype to production, and fostering a culture of craftsmanship and continuous learning.
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