28 remote Kotlin roles open to candidates in Spain, all at fully remote, VC-backed startups. 2 name Spain specifically, 7 are open worldwide, and the rest hire across the EU. Most asked-for skills: Kotlin, Java and Swift. Matcha reads every posting daily and emails you only the ones that fit.
Describe your next role, cut the noise
28 open roles · 80% not on LinkedIn
Popular home design and improvement platform for 77+ million users.
Own automated testing across web, mobile and desktop home-design apps; English required, Russian knowledge, contractor under B2B agreement; 3+ years test automation, 2+ years web/API, Java, Kotlin, Selenium, Appium, JUnit, TestNG, REST, GraphQL, gRPC.
Remote Europe only; specifically Serbia, Georgia, Spain, Poland, Portugal, Latvia, Estonia, Armenia.
Value-driven mobile app developer; 1B+ downloads; Health, Utilities, Music; London-based.
Own and modernize iOS music apps at scale, evolving architecture and preparing shared logic for Kotlin Multiplatform; 4+ years iOS; Swift, SwiftUI, UIKit, Combine, async/await, MVVM/Clean Architecture, REST/GraphQL, CI/CD, testing, AI coding assistants; 23 apps, 500M+ downloads.
Remote anywhere; company is remote-first and says you can work anywhere in the world.
The subscription platform for mobile apps
Own end-to-end features for mobile monetization SDKs, mainly iOS or Android with some cross-platform/hybrid work; 8+ years, shipped mobile apps, Swift/SwiftUI or Java/Kotlin/Compose, testing; bonus: SDKs, server-driven UI, Python/backend; Series C, equity, remote-first
Remote across the Americas and EMEA
We’re on a mission to improve the health of millions.
Own front-end-heavy full-stack development for zoe.com in consumer health; must have right to work in UK, Ireland, Spain, Poland or Germany, no visa sponsorship, work across UK/CET; 3–5 years, TypeScript, React, Next.js, backend language, APIs/databases; bonus: design systems, A/B testing, WCAG, GraphQL, Kotlin/Python
Remote UK, Ireland, Spain, Poland or Germany only; right to work required, no visa sponsorship
Mode: Fast-growing earn-as-you-go software enabling equitable financial opportunity.
Own user-facing mobile features across upcoming apps in a rewards/utility smartphone ecosystem; 5+ years building native Android and iOS apps, Kotlin/Java, Jetpack Compose, Swift/SwiftUI/UIKit, testing, app store release management, AI coding agents; remote-first, global, equity
Remote anywhere; 100% remote-first global company
Mode: Fast-growing earn-as-you-go software enabling equitable financial opportunity.
Own Android and iOS features across a portfolio of consumer utility/rewards apps, starting with Cleaner apps; 5+ years, Kotlin/Java, Jetpack Compose, Swift/SwiftUI/UIKit, testing, app store release management, GitHub PR workflows, AI coding agents; remote-first global, equity
Remote anywhere; 100% remote-first global company
Free, fun focus app helping 10M+ improve well-being daily.
Build and own end-to-end Android features for a consumer productivity app; close feature/parity gap with iOS and help define Android architecture, quality bar, and roadmap while foundations are still being built; design/analyze A/B tests; own Play Store releases, rollouts, and policy compliance; improve developer workflows, tooling, and team use of AI; work closely with product/design and support customers directly; scope can grow into technical leadership of the Android platform; requires 5+ years building Android apps and shipped work live in the Play Store; must: Kotlin, Jetpack Compose, Gradle, coroutines, Flow, experience in early-stage or fast-growing startups, established AI workflows; bonus: Android productivity-related platform surfaces, Health Connect/Google Fit, Wear OS, widgets/Glance, model training or fine-tuning, A/B testing and analytics, Play Console/CI/Firebase, own Play Store apps, French
Remote Europe; must work in CET ±3 hours
On-chain data platform with decoded, human-readable blockchain data.
Own end-to-end architecture for curated data products over large-scale blockchain/onchain datasets; build the control plane for data lifecycle management including dependency-aware orchestration, backfills, restatements, retries, partial-failure recovery, schema-change propagation, and data quality/alerting; hybrid backend/data role handling ambiguous requirements, designing systems/contracts, sequencing work for team, and building hardest parts; works across Go, Kotlin, Rust, Python, and SQL; strong fit for backend engineers deep in data systems or data engineers who became strong software engineers; seeks experience with orchestration/scheduling at scale, schema evolution with downstream consumers, production stateful stream processing, large-scale SQL/modeling, and distributed systems; bonus: dbt or SQLMesh beyond standard use, Parquet/Iceberg/Deltalog, experience where data is the product
Remote Europe or US only
FinMid enables platforms to offer financing with a single integration.
Own platform/infrastructure for engineering teams at a fintech building embedded SME financing infrastructure; build from scratch and operate CI/CD, cloud infrastructure, data tooling, AI integrations, and developer experience; end-to-end ownership of production systems including design decisions, incident response, security, observability, and standards; must have hands-on infrastructure experience with containers, orchestration, and cloud platforms such as Docker, Kubernetes, Terraform, AWS; code in Kotlin and TypeScript is used but specific language background not required; bonus: financial services/payments/regulated environments, JVM microservices, driving projects from idea to production, distributed/remote-team experience; meaningful equity
Remote Europe; Berlin office optional.
Complete platform for seamless travel business management and growth.
Own and automate payments risk systems for a merchant-of-record travel platform where chargeback exposure can remain open up to 18 months; build systems for signup and lifecycle risk assessment, payout holds/releases, reserves tied to supplier obligations, and unified views of exposure, disputes, balances, payout history, and verification state; lead projects end-to-end from cross-functional discovery through rollout and monitoring; influence risk decisions and automation scope, balancing loss protection with organizer UX; requires 7+ years in product engineering and 4+ years on risk/fraud/underwriting systems handling real money; must have deep expertise in exposure/credit models, rules/decision engines, holds, reserves, payout limits, transaction monitoring, and ledgers; must have strong backend experience in one of Ruby on Rails, Kotlin, Python, Go, Java, or Node.js, plus production on-call, incident response, and post-mortems; preferred: merchant-of-record/payment facilitator/marketplace/lender experience where platform carried losses, and experience automating manual underwriting or periodic review programs
Remote EMEA only
On-chain data platform with decoded, human-readable blockchain data.
Own architecture and end-to-end components for blockchain data ingestion, representation, and external delivery; turn ambiguous product requirements into technical designs, sequencing, and tasks for the team; build and scale large distributed data systems focused on correctness and performance across ingestion, distributed processing, and data lake storage; work across Go, Kotlin, Rust, and Python, choosing tools pragmatically; mentor through design reviews, testing, and work breakdown in a fully distributed team; must have designed and shipped distributed data systems and be strong in CS fundamentals; bonus: data lakes and formats like Parquet, Iceberg, or Deltalog, and experience where data is the product
Remote from East Coast US or Europe
Sleep fitness company delivering personalized Pod for better sleep worldwide.
Backend/SRE-focused role building and scaling distributed backend systems that handle critical business logic and data flows between embedded, machine learning, mobile, and business intelligence systems; maintain a 5TB/day data pipeline; improve availability and automation for ~30 microservices; contribute to backend services and product features; requires 8+ years software engineering and 5+ years backend engineer/SRE experience; must have advanced experience with at least 2 of Java/Scala/Kotlin, C#/.NET/F#, Python, NodeJS+TypeScript, plus distributed systems and deep cloud services expertise; high-intensity environment explicitly stating 60+ hour weeks; equity included for full-time employees
On-site in Milan or remote in Europe
Sleep fitness company delivering personalized Pod for better sleep worldwide.
Android engineer for the member-facing app that controls/configures the product and delivers insights; collaborates closely with backend, firmware, ML, R&D, Growth, Hardware, and executives; requires 6+ years shipping native Android features; must be fluent in Kotlin, Jetpack Compose, Coroutines, Flow, MVVM, MVI, and able to build scalable, testable enterprise-grade apps in a fast-paced environment with focus on stability; bonus: custom Compose UI components, software for hardware products, especially health/medical apps and peripherals; hyper-growth startup experience and shipping pixel-perfect apps with polished animations preferred; full-time role with equity for all full-time employees
Remote EU or on-site in Milan
Delivering Technology for Waste & Recycling Hauler Operators
Contractor role as most senior mobile engineer; lead evaluation of Kotlin Multiplatform and own recommendation; build first iOS app starting with iPad for drivers, phones later; contribute to existing native Kotlin Android app; strengthen offline-first architecture including local persistence, background sync, conflict resolution, and reliable photo capture/upload in poor connectivity; work on maps, location, and in-app navigation for a field-operations product; set mobile engineering standards and mentor team; 8+ years required; must: deep iOS/Swift, working Kotlin, hands-on Kotlin Multiplatform, offline-first real-time two-way sync, mapping/location apps, mobile CI/CD, English, async collaboration; bonus: deep Android at scale, Firebase/Firestore, camera/photo or on-device vision/ML, logistics/field service/B2B SaaS; daily AI-assisted development expected using tools like Claude, Cursor, and GitHub Copilot; must overlap consistently with U.S. working hours
Remote from Eastern Europe or LATAM only; must overlap with U.S. working hours
Technology-driven sustainable homes transforming construction and living.
10-month freelance project, 30–40 hours/week; focused on Smart Living/Smart Building IoT stack; improve zero-touch provisioning, enhance monitoring, and build a proof of concept for a new BOS architecture from defined functional requirements; build Linux-based IoT and edge systems for smart homes/buildings; develop device-to-cloud pipelines for telemetry, control, and automation; support provisioning, configuration, monitoring, OTA updates, fleet operations, diagnostics, reliability, security, and observability across edge and cloud; must: production Linux systems, IoT connectivity/protocols including BLE, LoRaWAN, WMBus, MQTT, embedded systems or edge computing, distributed/event-driven architectures, Kotlin, containers/cloud/infrastructure components, telemetry/streaming/time-series data; bonus: embedded Linux, OTA systems, secure device identity, observability/monitoring across edge and cloud
Remote anywhere in the EU; freelancers only.
API-first B2B payments platform with embedded, white-label Visa cards.
Requires 7+ years of software development experience with Java/Kotlin and Spring Boot, including at least 2 years in a leadership role. Candidates must have a strong background in distributed systems, authentication/authorization, and microservices architecture.
Remote in Germany (m/f/d). Role is for candidates located in Germany; otherwise remote eligibility not specified.
Original Zcash developers form ZODL and Zodl wallet.
Candidates should have experience with open-source software development and overseeing the security aspects of protocol implementation. Strong leadership, communication skills, and the ability to make informed decisions under pressure are essential for this management role.
Remote-first; can work from US, Chile, Czech Republic, France, Slovakia, UK, and New Zealand. No other restrictions stated.
Delivering Technology for Waste & Recycling Hauler Operators
Requires 5+ years of experience in building production backend systems with strong proficiency in Spring Boot and relational databases. Candidates must demonstrate clear English communication skills and the ability to work remotely with consistent overlap with U.S. working hours.
Remote Eastern Europe; contractor role. Must overlap U.S. working hours consistently.
Adaptive strategic portfolio management platform bridging strategy and execution.
Requires 4+ years of commercial frontend experience, including at least one year with TypeScript and React. A degree in Computer Science or a related field is expected, along with strong knowledge of CS fundamentals and usability.
Remote Canada, Portugal, Spain, and United Kingdom. Senior Frontend Developer; submit resume in English.
Adaptive strategic portfolio management platform bridging strategy and execution.
Requires 5+ years of commercial software experience, specifically with TypeScript, React, and Java or Kotlin. A degree in Computer Science or a related field is expected, along with experience in scalable distributed systems and cloud infrastructure.
Remote Canada, Ireland, Portugal, Spain, or UK.
Independent retailer tech provider offering POS, payments, and growth tools.
Requires 5+ years of mobile app experience, including 3+ years with Flutter and proficiency in native Android/iOS development. Candidates must have a strong testing culture and experience with the full mobile development lifecycle and CI/CD pipelines.
Remote with locations listed: Warsaw/Poland; Minsk/Belarus; Chişinău/Moldova; Belgrade/Serbia; Tbilisi/Georgia.
AI-powered tools empowering microbusinesses to start, grow, thrive.
Requires 8+ years of full-stack experience with expert knowledge of React, TypeScript, and backend languages like Kotlin or Java. Must have a proven track record of leading large-scale architectural initiatives and experience with AI-assisted development tools.
Remote Europe
Global, remote-first nutrition platform empowering healthier lives worldwide.
Requires significant experience in native Android development with Kotlin and Compose, ideally with KMP experience. Candidates should have a track record of end-to-end feature ownership and a product-oriented mindset.
Remote Europe; open to Germany, Spain, Portugal, or the UK.
Masabi powers seamless transit payments with innovative technology.
Requires deep experience in payment systems, PSP integrations, and distributed microservices architecture at a Principal or Staff level. Proficiency with AWS and modern infrastructure practices is essential, with a preference for experience in transit payments.
Remote UK only
Your Mindful AI Coding Agent
Requires 10+ years of experience in software engineering with expertise in at least one and proficiency in two of JavaScript, Python, Rust, or JVM languages. Must have a strong background in scaling distributed systems and cloud infrastructure within AWS or Google Cloud.
Remote Europe only
Masabi powers seamless transit payments with innovative technology.
Requires extensive experience in designing distributed systems and microservices at a Principal or Staff level. Must be proficient with cloud platforms (AWS), data architecture, and capable of translating ambiguous business problems into technical approaches.
Remote Europe
Online job interview coming up? Our AI Interview Copilot has you covered with real-time answers in over 30 languages.
Strong experience building production apps with React Native is required. Experience with iOS or Android native modules and real-time features is a bonus.
100% remote worldwide; flexible hours, no office required.
Helping families elevate the next generation through sports. A part of the DICK’S Sporting Goods family.
Candidates should have a solid understanding of software engineering fundamentals and experience leading successful Android projects. A passion for the latest Android technologies and experience mentoring engineers is also important.
Remote from the US; NYC office; limited by state hiring.
Your central hub for people ops
Candidates should have 7+ years of experience building and scaling backend systems, with strong judgment around tradeoffs between speed, quality, and long-term maintainability. Experience with technologies such as Kotlin, TypeScript/React, MongoDB, and AWS is a plus, along with the ability to communicate technical decisions clearly.
Remote across US time zones; async-first with occasional synchronous overlap.
You. Better.
Candidates should have 5+ years of engineering experience and a track record of leading major initiatives. A full-stack engineering background with a focus on backend development and member-facing product expertise is essential.
Candidates should have 3-7 years of experience in software development, focusing on backend systems, with strong programming skills in Kotlin or Java. A solid understanding of microservices architecture and experience with databases and production operations are also required.
Remote-first; work remotely with occasional travel and home-office stipend.
Voice AI platform for business use cases – speech-to-text, text-to-speech, and speech-to-speech APIs for developers
Candidates should have a Bachelor's or Master's degree in a related field and at least 4 years of experience in backend infrastructure development. Strong problem-solving skills and the ability to adapt in a fast-paced environment are essential.
We are Futureheads. Your favourite digital recruiter.
The ideal candidate should possess 7+ years of professional experience in a software engineering role and have experience building and designing scalable backend systems. Proficiency with SQL or NoSQL databases and backend programming languages like Java, Kotlin, or Python is also required.
Everything for your business: all the tools you need for your business to succeed
Candidates should have over 6 years of fullstack experience in product-led tech environments, with expertise in React/TypeScript and backend development using Java or Kotlin. A solid understanding of RESTful APIs, relational databases, and CI/CD practices is also required.
Remote-first company with fully remote setup; in-person collaboration optional.
Moving value-based musculoskeletal care forward
Candidates should have 3+ years of experience with Kotlin or Java and 2+ years of experience building production web applications with React and TypeScript/JavaScript. A growth mindset and eagerness to collaborate with a skilled team are essential.
US-based; remote policy not specified.
Candidates must have strong programming skills in Kotlin, Java, or Scala, and experience with cloud services, particularly GCP. A bachelor's degree in a technical discipline and significant industry experience are required.
Remote with home office; possible hybrid near Dexcom sites.
Candidates must have strong programming skills in Kotlin, Java, or Scala, and experience with cloud services, particularly GCP. A Bachelor's degree in a technical discipline and significant related experience are required.
Remote-based with hub regions; hybrid option within commuting distance.
Advanced Analytics for Process Manufacturing Data
Candidates should have at least 10 years of experience in software development with expertise in programming languages like Java, Kotlin, Python, or Typescript. A bachelor's degree in computer science or a related field is required, along with strong problem-solving skills and experience in agile methodologies.
Remote-first, fully distributed globally; open to asynchronous collaboration.
Advanced Analytics for Process Manufacturing Data
Candidates should have at least 10 years of experience in software development and expertise in programming languages such as Java, Kotlin, Python, or Typescript. A bachelor's or master's degree in computer science or a related field is required.
Remote-first; fully distributed globally; occasional travel possible.
The feature store for real-time machine learning at scale, from the creators of Uber's Michelangelo.
Candidates should have experience with large codebases in Python, Java, Kotlin, or Go, and running cloud-native Spark systems. A deep understanding of distributed systems, query performance, and data formats is essential, along with strong communication skills.
Remote-friendly with hybrid in SF/NY/Seattle; in-office days required.
We help individuals and companies improve productivity and health outcomes through science-backed behavior change.
Candidates must have production development experience in Kotlin, Java, or Scala, and for full-stack engineers, experience in React, Webpack, and TypeScript. A minimum of 5 years of software engineering experience is required, with a focus on building scalable microservice-based applications.
MDpanel, an entirely new way to deliver expert medical opinions
Candidates should have strong programming skills, particularly in Python, and experience with system design and architecture. A minimum of 4 years of industry experience in a software engineering role is required.
Remote-friendly, US-wide distributed; fully supports a positive remote-work culture.
Defining what it means to build and deliver the most extraordinary sports & entertainment experiences.The Crown is Yours
Candidates should have at least 5 years of professional Android development experience and expert proficiency in Kotlin. A strong understanding of Android SDKs, architecture patterns, and modern UI development practices is also required.
We create honest financial products that improve lives.
A Master's degree in Computer Science or related field is required along with 3 years of experience in software application development and cloud computing resources. Candidates should also have experience with databases, distributed systems, and modern testing frameworks.
Remote-first; mostly remote nationwide with some roles requiring office.
We create honest financial products that improve lives.
A bachelor's degree in a related field is required along with experience in software application development and various programming languages and technologies. Candidates should also have experience with modern testing frameworks and debugging code issues.
Remote-first; mostly remote within employment country; occasional office required.
Candidates should have at least 2 years of software engineering experience, preferably in data engineering or analytics systems, and proficiency in SQL and cloud platforms. Familiarity with data transformation tools and programming languages used in data engineering is also required.
Remote-first, globally distributed; fully remote; visa sponsorship not provided.
Candidates should have 4+ years of experience in software engineering and a solid understanding of computer science concepts. Strong problem-solving skills and the ability to communicate technical concepts clearly are essential.
Hybrid: remote within country, office option; up to 10% travel.
The operating system for the trades
Candidates should have 3+ years of engineering management experience and 10+ years of software engineering experience, particularly in mobile applications. A strong background in mobile development and software engineering fundamentals is essential.
To bring equity, hope and healing to those who need it most. To make a world of difference, one member at a time.
Candidates must have a Bachelor's Degree in Computer Science or a related field and at least five years of software development experience. Proficiency in backend development with C# or similar languages and experience in healthcare or insurance industries is preferred.
The family connection and safety app 📱
Candidates should have 3 to 5 years of hands-on experience in mobile development and a strong understanding of mobile architectures and CI/CD systems. Experience in building internal tools and strong analytical skills are also required.
Remote-first; roles can be performed remotely within Canada.
Tell us what you want. Get them in your inbox — no scrolling, no noise.
Describe your next role, cut the noise
20 companies have open Kotlin roles in Spain. The most active right now:
Share of the 28 postings that name each skill:
Figures from the postings on this page, updated weekly. Last update 2026-10-26.
No. Only 2 of the 28 postings name Spain; the rest accept candidates anywhere in the EU, and 7 are open worldwide. Most ask for a time-zone overlap rather than a specific address, so check the location line on each posting.
5 of these 28 postings hire in both the EU and the US, and 7 are open worldwide, which usually means a US or global company. The rest hire in the EU only, often for payroll or time-zone reasons.
70% ask for 5 to 10 years, 17% for 2 to 5 years, 13% for 10 or more, and 0% are open to candidates with under 2 years.
0 in the last 7 days, 28 over the last 6 months, from 20 companies.
A zero-noise alternative to job boards for remote startup jobs. Describe your next role once in plain language; Matcha reads every job description daily and emails you only the roles that actually fit. No UI to check, no notifications, no noise.
Matcha is a zero-noise alternative to job boards for remote startup jobs. Instead of scrolling through hundreds of irrelevant postings, you describe your next role once and Matcha reads every job description daily to surface only the roles that actually fit. Matches arrive in a single email, as soon as a relevant role is posted. No UI to check, no notifications, no noise. Because Matcha reads full job descriptions in plain language, there is no limit to what you can filter by: not just the usual dropdowns, but anything you can put into words.
Matcha surfaces fully remote jobs at startups from seed to series A, series B, etc. typically backed by top-tier VCs like a16z, Index Ventures, Y Combinator, Google Ventures, Sequoia, Accel, Khosla Ventures, etc. Roles span software engineering, design, marketing, sales, and more. Open to candidates in Europe, the US, Canada, the UK, Brazil, Latam, APAC, and worldwide.
Describe your next role, cut the noise