Staff Kotlin/JVM Engineer

About LendableLendable is committed to revolutionizing the way individuals access credit and save money. We are proud to be recognized as one of the leading fintech companies globally, and our journey has just begun:We are among the newest unicorns in the UK with a dynamic team of over 700 professionals.We rank among the fastest-growing tech companies in the UK.We have been profitable since 2017.Our growth is supported by top investors such as Balderton Capital and Goldman Sachs.Our customers love us, with a stellar rating of 4.9 across thousands of reviews on Trustpilot.We have successfully rebuilt the Big Three consumer finance products from the ground up: loans, credit cards, and car finance. Our aim is to get funds into our customers' hands within minutes, not days.As we continue our rapid expansion, we are focused on tapping into the two largest Western markets (the UK and the US) where trillions of dollars in financial products are still managed by large banks with outdated systems and cumbersome processes.Why You Should Join UsOwn Your Impact: You'll be empowered to make decisions that significantly influence the direction and success of Lendable from your very first day.Collaborate with Exceptional Talent: Work alongside a team of resourceful individuals who are dedicated to solving problems and innovating beyond the status quo.Develop Cutting-Edge Technology: Build top-tier technology in-house, leveraging new data sources, machine learning, and AI to facilitate efficient solutions.About the RoleIn our quest for a diverse team, we are excited to welcome a Staff/Lead Kotlin Engineer. This role provides a unique opportunity to introduce fresh perspectives and expertise to our design discussions, influencing how we tackle complex engineering challenges as we continue to grow. Our tech team, consisting of approximately 80 skilled professionals, is dedicated to transforming finance through a next-generation lending platform, advanced credit card solutions, and innovative auto-finance products.

Join Lendable's Innovative TeamLendable is on a transformative journey to develop the most advanced technology that empowers individuals to secure credit and save money efficiently. As one of the fastest-growing fintech companies in the UK, we are proud to have:Established ourselves as a unicorn with a talented team of over 700 professionals.Achieved profitability since 2017.Received backing from prestigious investors, including Balderton Capital and Goldman Sachs.Earned exceptional customer satisfaction ratings, holding a 4.9-star rating on Trustpilot.We have successfully reimagined the core consumer finance products: loans, credit cards, and car finance. Our mission is to expedite access to funds, ensuring customers receive money within minutes rather than days.As we scale our operations, we are targeting the two largest Western markets (UK and US) where traditional banks still use outdated systems and cumbersome processes.Your RoleWe are excited to invite a Senior Kotlin/JVM Engineer to our dynamic team. This position offers a unique opportunity to contribute your expertise and fresh perspectives to our design processes. You will play an integral role in crafting elegant solutions to complex engineering challenges within our innovative fintech platform. Join a tech-savvy team of around 80 engineers who are dedicated to reshaping the future of finance.

We are seeking a highly skilled Contract Senior Java / Kotlin Engineer to join our dynamic team.Work Location: On-site, 2 days per week in Spitalfields, LondonKey Requirements: Proven expertise in Java or Kotlin (back-end development) and a strong commitment to Test-Driven Development (TDD).Expected Start Date: Mid MarchAbout Us:At AND Digital, we are a forward-thinking tech company dedicated to enhancing digital delivery and bridging the digital skills gap. Since our inception in 2014, we have empowered organizations to create superior digital products and foster robust digital teams. We pride ourselves on the impactful nature of our work, making a significant difference for our clients through our regional offices (referred to as ‘Clubs’), which enable us to build strong, lasting partnerships. This model has not only driven our clients' success but has also facilitated our remarkable organic growth, expanding our team to over 1,300 professionals across the UK, Europe, and the USA, with ambitious plans for global expansion in the coming years.Join us on our mission to close the global digital skills gap!Your Role:Collaborate within a cross-functional team comprising software developers, technical product owners, and testers, all aligned towards developing JVM applications using Test-Driven Development and Pair Programming.Lead the design and implementation of our systems with a clear understanding of the context and purpose behind each project, while continually seeking opportunities to enhance our systems and workflows.Provide mentorship and coaching to fellow team members.Possess extensive knowledge of Java or Kotlin programming languages (5+ years of experience).Demonstrate in-depth knowledge and hands-on experience working within a cross-functional, agile development team.Have at least 3 years of practical experience in Test-Driven Development and a keen interest in Pair Programming.Equal Opportunities Commitment:We are proud to be an equal opportunity employer and welcome applications from all qualified individuals. We actively encourage applications from women, ethnic minorities, and individuals with disabilities. We are open to discussing flexible working arrangements, depending on the specific requirements of the role. Where reasonable adjustments are required, we will make every effort to accommodate them.

Role Overview AND Digital is hiring a Senior Java / Kotlin Engineer to join the team in London. This is a hybrid role, requiring on-site presence two days per week in either Leeds or London. About AND Digital Since 2014, AND Digital has worked with organizations to deliver digital products and strengthen digital teams. Our regional 'Clubs' model helps us build close partnerships with clients, providing dedicated, local support. Today, over 1,300 people work across our Clubs in the UK, Europe, and the USA. The company continues to grow organically, with plans to expand globally. AND Digital aims to close the digital skills gap and deliver lasting impact for clients and their teams. What You Will Do Work within a cross-functional team of developers, technical product owners, and testers to build JVM applications using Test Driven Development and Pair Programming. Lead system design and implementation, considering the broader context and looking for ways to improve systems and practices. Mentor and coach team members. What We’re Looking For Extensive hands-on experience in Java or Kotlin (back-end), with at least 5 years of professional development. Strong background in Test Driven Development (minimum 3 years) and an interest in Pair Programming. Experience working in cross-functional, agile teams. Inclusion and Flexibility AND Digital is an equal opportunity employer. Applications are encouraged from women, ethnic minorities, and individuals with disabilities. Flexible working arrangements are considered, depending on the requirements of the role. Reasonable adjustments are made to accommodate individual needs.

Join Lendable on Our MissionLendable is dedicated to revolutionizing the way people access credit and save money with cutting-edge technology. As one of the leading fintech companies globally, we have made remarkable strides:Recognized as one of the UK’s newest unicorns, with a dynamic team exceeding 700 members.Ranked among the fastest-growing tech companies in the UK.Maintained profitability since 2017.Supported by prestigious investors such as Balderton Capital and Goldman Sachs.Highly rated by our customers, boasting a 4.9 rating on Trustpilot from thousands of reviews.To date, we have completely reimagined the Big Three consumer finance products: loans, credit cards, and car finance. Our goal is to deliver funds to our customers in minutes rather than days.As we expand rapidly, we are setting our sights on the two largest Western markets (the UK and US), where trillions of dollars in financial products are managed by traditional banks utilizing outdated systems and cumbersome processes.Your Opportunity to Make an ImpactEmbrace Ownership: You will have the authority to make decisions that significantly influence the trajectory and success of Lendable from day one.Collaborate with Talented Teams: Work alongside exceptional individuals who are driven to solve problems and innovate beyond conventional solutions.Develop Cutting-Edge Technology: Build state-of-the-art solutions internally, leveraging new data sources, machine learning, and AI to optimize processes.About the Role:We are excited to welcome a Senior Kotlin Engineer to our expanding team. This role offers a unique opportunity to contribute fresh insights and expertise to our design discussions, aiding in the development of sophisticated solutions to complex engineering challenges during our growth phase. Our tech team, currently comprising around 80 skilled professionals, has been pivotal in transforming the finance landscape with our next-generation lending platform.

About LendableLendable is dedicated to revolutionizing access to credit and savings through cutting-edge technology. As one of the UK's most promising fintech companies, we have established ourselves as a leader in the industry:Recognized as one of the UK’s newest unicorns with a diverse team exceeding 700 professionals.Ranked among the fastest-growing tech companies in the UK.Achieved profitability since 2017.Supported by prominent investors including Balderton Capital and Goldman Sachs.Celebrated by customers with exceptional reviews (4.9 from thousands on Trustpilot).We have successfully reimagined the Big Three consumer finance products: loans, credit cards, and car finance, enabling our customers to access funds in minutes rather than days.Our growth trajectory is ambitious as we target the UK and US markets, where traditional banks still rely on outdated systems and cumbersome processes.Why Join Us?Embrace Ownership: Make impactful decisions that shape the success of Lendable from day one.Collaborate with a Talented Team: Work within small, agile teams of innovative thinkers who prioritize problem-solving.Develop Cutting-Edge Technology: Utilize new data sources, machine learning, and AI to enhance our operational efficiency.About the RoleAs part of our commitment to diversifying our team, we are excited to welcome a Lead Kotlin Engineer. This role will empower you to contribute your unique insights and skills to our engineering discussions, ultimately helping us deliver sophisticated solutions to complex challenges. Join a tech team of approximately 80 skilled professionals who have transformed finance by creating a next-generation lending platform, credit card, and auto-finance products.

About hyperexponential hyperexponential builds AI-driven software for the insurance sector, helping companies make critical decisions in a $7 trillion industry. The platform supports processes ranging from rocket launches and autonomous vehicle deployments to disaster recovery. Backed by a16z, Highland Europe, and Battery Ventures, hyperexponential partners with nearly 50 major insurers, processes billions in premiums, and has maintained a zero churn rate. The company’s platform has grown from a single product into a suite of tools supporting every stage of pricing and underwriting. AI is central to this work, powering projects like a domain-specific peer programmer for insurance and reimagined industry workflows. At hyperexponential, impact comes from the challenges tackled and the discipline shown, not just job titles or tenure. The team values growth, resilience, and collaboration among peers who push each other to achieve their best work. About the Analytics Team The Analytics team designs and builds the data systems that help insurers turn complex datasets into actionable insights. Their work enables underwriters and actuaries to make informed decisions on significant risks by transforming raw portfolio data into practical intelligence. Role Overview: Senior Software Engineer (Kotlin) - Analytics Team This Senior Backend Engineer role focuses on architecting and developing the foundational data systems for next-generation insurance analytics. The position offers a greenfield environment, where responsibilities include designing distributed data solutions from the ground up, building scalable ingestion pipelines, and creating infrastructure that gives clients a data-driven edge. Engineers in this role work on sophisticated technical challenges and collaborate closely with experienced product and engineering colleagues, directly impacting business outcomes. Location London

This hybrid position is located in Dublin, Ireland, with full relocation support provided.At Toast, we pioneer technology that empowers restaurants and local businesses to thrive in the digital era. Our innovative solutions help business owners optimize operations, boost sales, engage customers effectively, and ensure employee satisfaction.What Drives UsHaving established ourselves as the premier hospitality platform in the U.S., Toast is now setting its global ambitions. As a member of our International team, you'll play a vital role in developing core systems to introduce Toast to new markets. Join a high-impact engineering team that tackles complex technical challenges in a dynamic environment. We seek leaders who combine technical excellence with a strong product vision to facilitate ongoing growth for our team and platform.Daily ResponsibilitiesLead intricate projects in a collaborative, cross-functional environment.Manage backend services to support internationalization across both restaurant software and cloud solutions.Design, build, deploy, and maintain resilient and scalable systems that are crucial to our customers’ success.Refine our technical approach to data management in alignment with our international strategy.Guide and mentor team members, leading technical discussions and fostering best engineering practices.Work closely with pilot customers, occasionally on-site, to ensure successful implementation and operations.Champion best coding practices, raising standards for yourself, your team, and the company.Utilize cutting-edge AI tools to enhance development workflows, increase productivity, and contribute to a culture of innovation.

Join our dynamic team at hyperexponential as a Full Stack Engineer, where you will be instrumental in developing innovative software solutions using Kotlin and React. This role involves collaborating with cross-functional teams to design, implement, and maintain high-quality web applications that meet our clients' needs. You will have the opportunity to work on exciting projects that push the boundaries of technology while fostering your professional growth.

Join our dynamic team at minderacraft as a Staff Full-Stack Engineer. In this pivotal role, you will take charge of both backend and frontend development, crafting high-quality, scalable solutions while establishing engineering standards for the team. This position offers a unique blend of hands-on development and technical leadership, where you will mentor fellow engineers and collaborate closely with our product and platform teams.Your expertise will be crucial as you work with cutting-edge backend services developed in Kotlin, alongside rich frontend applications built with React and Next.js, utilizing TypeScript. Additionally, you will engage with cloud-native infrastructure on either Azure or AWS.This position is offered as an initial 6-month contract (outside IR35) with a requirement to be onsite in London Paddington three days a week.

About UsSmarkets: Revolutionizing the Betting IndustryAt Smarkets, we operate one of the most advanced prediction markets worldwide, with over £29 billion processed since our inception in 2010. With a community of over 200,000 traders globally, we are redefining betting across various domains, from sports to political markets, ensuring the most competitive prices and fair odds.Our technology stack is meticulously crafted for scalability, reliability, and speed, utilizing Linux, Kafka, Postgres, Kubernetes, along with Python 3, C++17, and React. We build the infrastructure that institutions rely on while making trading accessible to all. Our resilience has allowed us to thrive through every market cycle and industry evolution.Central to our success are our talented team members. We foster a high-performance environment where exceptional skills flourish, combining in-depth business acumen with a commercial outlook to fuel strategic growth.If you are excited about shaping the future of prediction markets with cutting-edge technology and a focus on customer satisfaction, Smarkets is the perfect place for you.Your RoleWe are seeking a highly skilled Staff Engineer to spearhead our engineering initiatives in a senior individual contributor capacity, directly reporting to the VP of Engineering. As the most senior technical individual contributor in the organization, you will be instrumental in guiding our technology stack and fostering innovation across various teams.Key Responsibilities:Serve as a senior technical authority, offering strategic direction and hands-on assistance for impactful projects while advancing the engineering roadmap.Collaborate with the VP of Engineering to optimize our tech stack and enhance development methodologies.Work in tandem with frontend and backend teams to architect scalable and reliable microservices using Rust, Python, and Typescript.Enhance service latency and performance across PostgreSQL, Redis, and Kafka-based systems.Facilitate the deployment of CI/CD, monitoring, and alerting frameworks to maintain system health and performance.Promote engineering best practices and contribute to a culture of collaboration, continuous learning, and innovation.Influence and cultivate a top-tier engineering culture.Identify innovation opportunities to drive business value and sustain a competitive advantage.About You:Proven experience in software engineering, with a solid foundation in computer science principles.Expertise in Rust, Python, and Typescript is highly desirable.Strong problem-solving skills and a passion for innovation.Excellent communication and collaboration abilities.Ability to lead and mentor junior engineers.

Convergent Research is seeking a Staff Engineer specializing in FPGA Engineering to join the team in London. This position centers on FPGA design and development for technology projects that drive ongoing research and engineering work. Role overview This role contributes to shaping technical solutions that advance the organization's research initiatives. The Staff Engineer will work closely with other engineers and researchers to address complex challenges in FPGA systems. What you will do Design and develop FPGA-based systems for a variety of research-focused projects Use advanced knowledge in FPGA engineering to tackle technical problems Collaborate with cross-functional teams of engineers and researchers Work environment The team emphasizes open communication and values creative approaches to problem solving. Collaboration and a focus on technical progress are central to the group’s work style.

Role overview Antithesis is seeking a Senior or Staff Engineer in London, UK to focus on Hegel. The team values creative problem-solving and technical depth, with engineers regularly exchanging ideas and expertise to drive projects forward. Collaboration is a core part of the work culture. What you will do Tackle complex engineering challenges involving Hegel Support both new and ongoing projects that influence the team’s direction Work closely with colleagues to develop practical solutions Requirements Previous experience at a senior or staff engineering level Keen interest in working with Hegel Enjoys sharing knowledge and collaborating with others Motivated to try new technical approaches Location This role is based in London, UK.

At Intercom, we are revolutionizing customer service with AI technology, dedicated to empowering businesses to deliver exceptional customer experiences.Our AI agent, Fin, stands out as the most advanced customer service AI on the market, enabling businesses to provide seamless, around-the-clock customer support. When paired with our Helpdesk, it forms the comprehensive Intercom Customer Service Suite, designed to handle complex inquiries while maintaining a human touch.Since our inception in 2011, we've gained the trust of nearly 30,000 businesses worldwide, setting new benchmarks for customer service. Our commitment to our core values drives us to innovate, execute with urgency, and consistently offer outstanding value to our clients.What’s the opportunity?As a Staff Product Engineer, you will take on a pivotal leadership role within our engineering team, significantly impacting our technical direction. You will be responsible for designing and implementing both back-end and front-end systems, collaborating closely with designers, product managers, researchers, and data analysts. Additionally, you will mentor other engineers and work alongside the Engineering Manager to cultivate the team's growth and define our technical strategy.What will I be doing?In this role, you will:Shape our technical architecture to accommodate the increasing demands of our diverse customer base.Emphasize agility alongside scalability and reliability, with continuous deployment practices ensuring seamless incremental releases.Engage in all phases of software development, from ideation to prototyping, design, and implementation, blending hands-on coding with architectural leadership.Utilize cutting-edge tools and AI-powered developer resources to streamline your workflow and focus on impactful problem-solving.Participate actively in the recruitment, mentoring, and career progression of fellow engineers.Elevate the standards for technical excellence, performance, and operational reliability.

Join Attio as a Staff Product Engineer and be at the forefront of revolutionizing how teams collaborate and manage their relationships. You will play a pivotal role in the design and development of innovative products that enhance user experience and drive engagement.

Join AccuRx as a Staff Product Engineer and be a vital part of our mission to enhance healthcare accessibility and patient experience. In this role, you will leverage your expertise to design, develop, and implement innovative software solutions that directly impact healthcare providers and patients alike. Collaborate with cross-functional teams to drive product development from concept through execution, ensuring high-quality deliverables.

Join CyberArk Software as a Staff Automation Engineer, where you will play a pivotal role in enhancing our automation frameworks. You will work closely with cross-functional teams to design, implement, and maintain automated testing solutions that ensure the highest quality of our security products. Your expertise will help us streamline our processes, improve system reliability, and reduce time-to-market.

9fin is looking for a Staff Engineer to join the team in London. This position centers on building scalable systems and advancing the company’s financial data analytics platform. Staff Engineers at 9fin help set technical direction and have a direct impact on product quality. Role overview This role involves both hands-on engineering and collaboration with peers. The work supports evolving data and user needs, with a focus on reliability and performance. What you will do Design and develop systems that handle increasing data volumes and user demands Collaborate with fellow engineers to strengthen analytics features Offer input that shapes product features and influences the customer experience Location This is an on-site role based in London.

Join our innovative team at Astronomer as a Staff Software Engineer specializing in Data. In this role, you will help shape the future of data engineering solutions that empower organizations to harness the full potential of their data. You will work collaboratively with cross-functional teams to design, develop, and optimize data pipelines and infrastructure, ensuring high performance and reliability.

Join Our Team as a Staff Software EngineerAt Deliveroo, we are dedicated to revolutionizing the way people shop and dine. Our commitment to impact, innovation, and growth is at the core of everything we do. Our engineering teams are tasked with addressing intricate technical challenges within a global, three-sided marketplace, developing 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 the technology that fuels Deliveroo's expansive growth.We are seeking a Staff Software Engineer to become a key member of our London, UK - Hybrid (3 days in the office) team. In this pivotal role, you will help us craft technical solutions for essential business challenges and steer the technical direction for complex, high-scale systems.Discover our Engineering team — learn about our motivations, work culture, and what you can expect when you join us.