CrawlJobs Logo

Senior Software Engineer (Kotlin)

hyperexponential.com Logo

hyperexponential

Location Icon

Location:
United Kingdom , London

Category Icon

Job Type Icon

Contract Type:
Not provided

Salary Icon

Salary:

Not provided

Job Description:

About hyperexponential (hx) At hyperexponential, we're building the AI-powered platform that enables the world's most critical decisions in a $7 trillion industry, which risks to take, and how to price them. These are the decisions that shape real-world outcomes: whether rockets successfully launch into space, autonomous vehicles make it to market, or communities recover after major storms. Until now, insurance has been making billion-dollar decisions using outdated tools. We're changing that. Our platform brings together data, AI, and human expertise to give insurers the fastest path from submission to decision - helping them move faster, act smarter, and take on more risk with confidence. Backed by a16z, Highland Europe, and Battery Ventures, we're scaling globally - already trusted by nearly 50 of the world's largest insurers, with zero churn and billions in premiums flowing through hx. What began as a single product in one market has rapidly evolved into a multi-product, multi-territory platform powering every stage of pricing and underwriting. AI is at the core of what we do - from building the world's first domain-specific AI peer programmer for insurance (think GitHub Copilot with a PhD in actuarial science) to shaping agentic workflows that reinvent how this industry operates. What makes hx different is the people who build it. Here, impact isn't tied to title or tenure; it's defined by the challenges you take on and the discipline you bring. Surrounded by peers who stretch you, you'll do the best, hardest work of your life in a company engineered to endure. If that sounds like you, join us in building what comes next. About the Analytics team Engineering at hx drives every breakthrough that transforms how insurers make billion-dollar decisions. Our Analytics team sits at the cutting edge of this mission, building the data systems that unlock the full value of complex insurance datasets. We're turning raw portfolio data into actionable insights that help underwriters and actuaries make smarter, faster decisions on risks worth billions. As a Senior Backend Engineer in the Analytics team, you'll architect and build the foundational data systems that power next-generation insurance analytics. This is greenfield territory - you'll be designing distributed data solutions from the ground up, creating scalable ingestion pipelines, and building the infrastructure that turns complex insurance data into competitive advantage for our customers. You'll work at the intersection of complex engineering challenges and real business impact, collaborating with sharp product and UX minds to create data-driven experiences that fundamentally change how insurers understand and optimise their risk portfolios. If you love solving hard technical problems while seeing direct customer impact, this is where you'll thrive.

Job Responsibility:

  • Build scalable data systems in Kotlin that enable insurers to ingest, process, and explore complex datasets, turning months of manual analysis into real-time insights that drive billion-dollar risk decisions
  • Design distributed analytics infrastructure on AWS using Terraform, creating robust, cloud-native systems that handle enterprise-scale data volumes while maintaining reliability and performance
  • Deliver customer-facing analytics features that transform how users understand and optimise risk modelling, building intuitive interfaces for complex portfolio analytics that were previously impossible
  • Drive technical innovation in data architecture, piloting emerging technologies and AI/ML approaches that continuously improve the analytics experience and unlock new capabilities for customers
  • Collaborate across disciplines with Product, UX, and Engineering teams to translate complex business requirements into elegant technical solutions that balance powerful functionality with usability
  • Elevate system quality through robust architecture decisions, comprehensive testing, and clear documentation that makes complex data systems maintainable and scalable as the team grows

Requirements:

  • Built production backend systems with proven experience as a polyglot engineer, ideally with strong Kotlin skills and the ability to work effectively across multiple languages and tech stacks
  • Delivered scalable cloud infrastructure using AWS and infrastructure-as-code tools like Terraform, with hands-on experience building distributed systems that handle real-world data volumes
  • Developed data warehousing solutions with hands-on experience building ETL pipelines, data modelling, and orchestration workflows using modern tools (e.g., dbt, Airflow, Spark), demonstrating the ability to transform raw data into reliable, performant analytics infrastructure that supports business decision-making at scale
  • Collaborated effectively across teams to deliver features that customers actually use, with evidence of translating business requirements into technical solutions that drive measurable impact
  • Maintained high code quality standards with a commitment to clean, well-documented, maintainable systems and the discipline to build infrastructure that scales with business growth
  • Demonstrated curiosity about emerging technologies, particularly around data processing, analytics platforms, and AI/ML tools that can enhance developer productivity and unlock new customer value
What we offer:
  • £5,000 training and conference budget for individual and group development
  • 25 days of holiday plus 8 bank holidays (33 days total)
  • Company pension scheme via Penfold
  • Mental health support and therapy via Spectrum.life
  • Individual wellbeing allowance via Juno
  • Private healthcare insurance through AXA
  • Income protection and Life Insurance
  • Cycle to Work Scheme
  • Top-spec equipment (laptop, screens, adjustable desks, etc.)
  • Regular remote and in-person hackathons, lunch and learns, socials, and game nights
  • Team breakfasts and lunches, snacks, drinks fridge, and a fun office at The Ministry
  • Exceptional opportunities for personal development and growth as we build something remarkable together

Additional Information:

Job Posted:
April 24, 2026

Employment Type:
Fulltime
Work Type:
On-site work
Job Link Share:

Looking for more opportunities? Search for other job offers that match your skills and interests.

Briefcase Icon

Similar Jobs for Senior Software Engineer (Kotlin)

Senior Software Engineer

We are looking for experienced, passionate, and resourceful senior-level enginee...
Location
Location
India , Bengaluru
Salary
Salary:
Not provided
earnin.com Logo
EarnIn
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 4+ years of development experience in Software Engineering
  • Bachelor's, Master’s, or PhD degree in computer science, computer engineering, or a related technical discipline, or equivalent industry experience
  • Proficient in at least one modern programming language such as C#, Kotlin, Java, Python, Go, and Scala
  • Hands-on experience working with various databases (DynamoDB, MySQL, ElasticSearch) and data pipeline technologies
  • Experience with continuous integration and delivery tools
  • Experienced in developing and executing functional and integration tests
  • Excellent written and verbal communication skills
  • Ability to thrive in a fast-paced, dynamic environment and have a bias towards action and results
Job Responsibility
Job Responsibility
  • Design & implement features robust enough for our high scale
  • Drive the implementation of new features—break complex problems down to their bare essentials, translate that complexity into elegant design, and create high-quality, maintainable code
  • Create and maintain test automation to enable continuous integration and development velocity
  • Design & deliver thoughtfully crafted REST APIs to drive the interactions between our client applications and backend services
  • Work cross-functionally with other teams (data science, design, product, marketing, analytics)
  • Leverage a broad skill set and help us implement and learn new technologies quickly
  • Provide and receive design and implementation evaluations and improve with each iteration
  • Debug production issues across our services infrastructure and multiple levels of our stack
  • Think about distributed systems & services and care passionately about producing high-quality code
What we offer
What we offer
  • healthcare
  • internet/cell phone reimbursement
  • a learning and development stipend
  • potential opportunities to travel to our Mountain View HQ
  • Fulltime
Read More
Arrow Right

Senior Software Engineer (Web)

We are looking for experienced, passionate, and resourceful senior full-stack en...
Location
Location
Thailand , Bangkok
Salary
Salary:
Not provided
earnin.com Logo
EarnIn
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 4+ years of development experience in a fast-paced environment
  • Excellent knowledge of front-end web programming languages, such as HTML, CSS, JavaScript, Typescript, and ReactJS, with the ability to render server-side and client-side content
  • Excellent knowledge of one or more back-end programming languages (C#, Python, Kotlin, Go)
  • Bachelor's, Master’s, or PhD degree in computer science, computer engineering, or a related technical discipline, or equivalent industry experience
  • Excellent analytical thinking and problem-solving skills
  • Excellent written and verbal communication skills
  • Experience with continuous integration and delivery tools
Job Responsibility
Job Responsibility
  • Drive the implementation of new features - break down complex problems into their bare essentials, translate this complexity into elegant design, and create high-quality, maintainable code
  • Collaborate and mentor other engineers while providing thoughtful guidance using code, design, and architecture reviews
  • Work cross-functionally with other teams (data science, design, product, marketing, analytics)
  • Leverage a broad skill set and help us implement and learn new technologies quickly
  • Create and maintain test automation to enable continuous integration and development velocity
What we offer
What we offer
  • Healthcare
  • Internet/cell phone reimbursement
  • A learning and development stipend
  • Opportunities to travel to our Mountain View HQ
  • Fulltime
Read More
Arrow Right

Senior Staff Software Engineer

We're on a mission to reinvent the financial system and make it work for people....
Location
Location
United States
Salary
Salary:
251000.00 - 306000.00 USD / Year
earnin.com Logo
EarnIn
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 8+ years of development experience in backend or full-stack software development, including IC Leadership experience
  • Bachelor's, Master’s, or PhD degree in computer science, computer engineering, or a related technical discipline, or equivalent industry experience
  • Expertise in trade-off analysis for distributed architectures
  • Proficient in at least one modern programming language, and the ability to understand more than one - we currently work in Kotlin and C#
  • Proficient in running multiple critical tech initiatives in parallel
  • Familiarity with the clean architecture approach
  • Experience with various data storage, including relational and document databases
  • Excellent written and verbal communication skills
  • Being self-motivated and able to work independently with minimal supervision
Job Responsibility
Job Responsibility
  • Drive the design & implementation of new features and/or re-architect existing systems - break down complex problems into their bare essentials, translate this complexity into elegant design, and create high-quality, maintainable code
  • Make a meaningful impact on the lives of our community members
  • Design & deliver robust microservice integrations via REST/gRPC APIs using various communication, consistency, and coordination strategies
  • Collaborate and mentor other senior engineers while providing thoughtful guidance using code, design, and architecture reviews
  • Contribute to defining technical direction, planning the roadmap, escalating issues, and synthesizing feedback to ensure team success
  • Estimate and manage team project timelines and risks
  • Care passionately about producing high-quality designs and code
  • Participate in hiring and onboarding for new team members
  • Lead cross-team engineering initiatives
What we offer
What we offer
  • equity and benefits
  • Fulltime
Read More
Arrow Right

Senior Software Engineer

EnergyHub empowers utilities and their customers to create a clean, distributed ...
Location
Location
United States
Salary
Salary:
130000.00 - 170000.00 USD / Year
energyhub.com Logo
EnergyHub
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5+ years professional software engineering experience, preferably in a small to medium-sized team, with a proven exceptional ability as a FullStack engineer or similar role
  • Strong comfortability with Kotlin/Java and familiarity with web services and RESTful APIs using Spring
  • Expertise in API ingestion and data normalization processes
  • Experience with front end languages, such as React/Typescript
  • Experience with containerized systems
  • Knowledge of modern security best practices, authentication/authorization frameworks, and system/API hardening.
Job Responsibility
Job Responsibility
  • Develop and maintain the backend services of our EV platform, ensuring that all components work together seamlessly
  • Integrate with third-party APIs to implement external services into our platform, enhancing OEM partners and other external solutions
  • Manage ingestion and storage of multivariate data sets that can scale to millions of users/connected vehicles
  • Build and enhance data lakes to provide additional data analysis for different services and consumers
  • Develop services to interact with connected vehicles at scale
  • Develop and maintain front end “web apps” to provide UIs for our various different products and services
  • Ensure proper security and data protection policies, procedures, and monitoring are in place
  • Design, develop, and maintain third-party accessible APIs for data ingest/egress within the platform
  • Write and maintain technical documentation
  • Drive and embody the “Dev Owns Quality” culture
What we offer
What we offer
  • 100% paid medical for employees
  • 401(k) with employer match
  • Casual environment
  • Flexibility to set your own schedule
  • Fully stocked fridge and pantry
  • Free Citi Bike membership
  • Secure bike rack
  • Gym subsidy
  • Paid parental leave
  • Education assistance program
  • Fulltime
Read More
Arrow Right

Senior Software Test Engineer

You are passionate about building rock solid software. Now is your chance to do ...
Location
Location
Germany
Salary
Salary:
80000.00 - 90000.00 EUR / Year
linuxrecruit.co.uk Logo
Linux Recruit
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Strong background in software engineering
  • Ideally with a JVM based language
  • Ability to both write and evaluate clean, maintainable code
  • Solid understanding of modern testing and QA practices and frameworks
  • Experience in automation
  • Real curiosity about AI tools and their testing challenges
  • Collaborative mindset
Job Responsibility
Job Responsibility
  • Take ownership of the end to end of software testing projects within a platform team
  • Support dozens of other engineering teams across the organisation
  • Bring software engineering excellence into testing
  • Work with backend languages such as Kotlin, Java, or Go
  • Drive full automation across the stack
  • Collaborate closely with product managers and engineering leaders
  • Shape solutions that will have an impact far beyond your own team
  • Fulltime
Read More
Arrow Right

Senior Software Engineer

Take a leading role in designing, building and scaling the technology that under...
Location
Location
United States , New York City
Salary
Salary:
190000.00 - 220000.00 USD / Year
pomelocare.com Logo
Pomelo Care
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5+ years of experience shipping high-quality, scalable software systems
  • High level of proficiency in system and relational database design and one or more languages like Java, C#, Kotlin, Python, Go, etc.
  • Experience developing applications with modern front-end frameworks like React or Vue.js
  • Passionate about staying on the cutting-edge of agentic tooling
  • Track record of delivering elegant and maintainable solutions to complex problems
Job Responsibility
Job Responsibility
  • Write clean, elegant code to ship new features
  • Lead the design and development of robust, scalable systems
  • Push the boundaries of new AI-powered tools
  • Enhance the mobile experience
  • Mentor other engineers
  • Collaborate with product and clinical leadership to influence the technical roadmap
What we offer
What we offer
  • Competitive healthcare benefits
  • Generous equity compensation
  • Unlimited vacation
  • Membership in the First Round Network
  • Fulltime
Read More
Arrow Right

Senior Software Engineer

Pomelo Care is a multi-disciplinary team of clinicians, engineers and problem so...
Location
Location
United States
Salary
Salary:
190000.00 - 220000.00 USD / Year
pomelocare.com Logo
Pomelo Care
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5+ years of experience shipping high-quality, scalable software systems
  • High level of proficiency in system and relational database design and one or more languages like Java, C#, Kotlin, Python, Go, etc.
  • Experience developing applications with modern front-end frameworks like React or Vue.js
  • Passionate about staying on the cutting-edge of agentic tooling to significantly accelerate delivery and amplify engineering impact
  • Track record of delivering elegant and maintainable solutions to complex problems that matter
Job Responsibility
Job Responsibility
  • Write clean, elegant code to ship new features
  • Lead the design and development of robust, scalable systems that enable clinical team to deliver personalized, data-driven care
  • Push the boundaries of new AI-powered tools, building agents that make clinicians drastically more efficient and effective
  • Enhance mobile experience, ensuring parents and families feel connected and supported
  • Mentor other engineers, providing technical guidance and thoughtful code reviews
  • Collaborate with product and clinical leadership to influence the technical roadmap
What we offer
What we offer
  • Competitive healthcare benefits
  • Generous equity compensation
  • Unlimited vacation
  • Membership in the First Round Network (a curated and confidential community with events, guides, thousands of Q&A questions, and opportunities for 1-1 mentorship)
  • Fulltime
Read More
Arrow Right

Senior Software Engineer

Take a leading role in designing, building and scaling the technology that under...
Location
Location
United States , San Francisco
Salary
Salary:
190000.00 - 220000.00 USD / Year
pomelocare.com Logo
Pomelo Care
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 5+ years of experience shipping high-quality, scalable software systems
  • High level of proficiency in system and relational database design and one or more languages like Java, C#, Kotlin, Python, Go, etc.
  • Experience developing applications with modern front-end frameworks like React or Vue.js
  • Passionate about staying on the cutting-edge of agentic tooling
  • Track record of delivering elegant and maintainable solutions to complex problems
Job Responsibility
Job Responsibility
  • Write clean, elegant code to ship new features
  • Lead the design and development of robust, scalable systems
  • Push the boundaries of new AI-powered tools
  • Enhance mobile experience
  • Mentor other engineers
  • Collaborate with product and clinical leadership to influence the technical roadmap
What we offer
What we offer
  • Competitive healthcare benefits
  • Generous equity compensation
  • Unlimited vacation
  • Membership in the First Round Network
  • Fulltime
Read More
Arrow Right