Kotlin Jobs

Join us in building the future of finance. Our mission is to democratize finance for all. An estimated $124 trillion of assets will be inherited by younger generations in the next two decades. The largest transfer of wealth in human history. If you’re ready to be at the epicenter of this historic cultural and financial shift, keep reading. About the team + role We are building an elite team, applying frontier technologies to the world’s biggest financial problems. We’re looking for bold thinkers. Sharp problem-solvers. Builders who are wired to make an impact. Robinhood isn’t a place for complacency, it’s where ambitious people do the best work of their careers. We’re a high-performing, fast-moving team with ethics at the center of everything we do. Expectations are high, and so are the rewards. The Android team’s mission is to redefine how millions of users engage with their finances. We're focused on delivering intuitive, scalable, and inclusive mobile experiences that empower our customers to build better financial futures. We collaborate closely with Product, Design, and Backend Engineering to ensure every interaction on Android reflects quality, performance, and care. The Crypto expansion team is building Robinhood products for new regions, extending crypto and adjacent financial experiences to customers around the world. The team owns all critical parts of the app across onboarding, funding, account setup, trading product integrations, and platform capabilities required to operate in new jurisdictions. This team sits at the intersection of building an internationalization platform and region specific product execution, to help Robinhood be successful in new markets. Recent work in expansion effort has included Canada, Europe launches with multi-currency wallet capabilities, local funding rails, translations infrastructure, and new onboarding experiences for each region As a Senior Android Engineer on the Crypto Expansions team, you’ll help launch Robinh

Join us in building the future of finance. Our mission is to democratize finance for all. An estimated $124 trillion of assets will be inherited by younger generations in the next two decades. The largest transfer of wealth in human history. If you’re ready to be at the epicenter of this historic cultural and financial shift, keep reading. About the team + role We are building an elite team, applying frontier technologies to the world’s biggest financial problems. We’re looking for bold thinkers. Sharp problem-solvers. Builders who are wired to make an impact. Robinhood isn’t a place for complacency, it’s where ambitious people do the best work of their careers. We’re a high-performing, fast-moving team with ethics at the center of everything we do. Expectations are high, and so are the rewards. The Robinhood Wallet team’s mission is to democratize access to financial services worldwide by leveraging DeFi protocols and Robinhood Chain! We build secure, intuitive, and decentralized products that enable our users to custody and manage their digital assets. Our team works at the intersection of traditional finance and web3, driving progress in cryptocurrency and blockchain applications. We work closely with product managers, product designers, and backend engineers to deliver highly reliable, high-performance systems for customers worldwide. We pride ourselves on a culture of shared learning, high technical standards, and respectful collaboration. As a Senior Android Developer , you’ll build and own new product features for the Robinhood Wallet Android app. You will develop reliable and secure solutions to deliver a high-quality trading experience for cryptocurrencies and tokenized stocks, including perpetual futures, to customers worldwide. In this role, you will take lead responsibility for designing scalable mobile architectures, defining code standards, and maintaining high-quality codebases. You will collaborate closely with client engineers, backend develop

Join us in building the future of finance. Our mission is to democratize finance for all. An estimated $124 trillion of assets will be inherited by younger generations in the next two decades. The largest transfer of wealth in human history. If you’re ready to be at the epicenter of this historic cultural and financial shift, keep reading. About the team + role We are building an elite team, applying frontier technologies to the world’s biggest financial problems. We’re looking for bold thinkers. Sharp problem-solvers. Builders who are wired to make an impact. Robinhood isn’t a place for complacency, it’s where ambitious people do the best work of their careers. We’re a high-performing, fast-moving team with ethics at the center of everything we do. Expectations are high, and so are the rewards. The Android team’s mission is to redefine how millions of users engage with their finances. We're focused on delivering intuitive, scalable, and inclusive mobile experiences that empower our customers to build better financial futures. We collaborate closely with Product, Design, and Backend Engineering to ensure every interaction on Android reflects quality, performance, and care. The Trading Products team creates the experiences that bring Robinhood’s trading ecosystem to life for customers every day. Team Experience is responsible for making those journeys feel fast, intuitive, and dependable—so customers can engage with sophisticated trading products through simple, well-crafted mobile experiences. This role is based in our Menlo Park, CA office, with in-person attendance expected at least 3 days per week. At Robinhood, we believe in the power of in-person work to accelerate progress, spark innovation, and strengthen community. Our office experience is intentional, energizing, and designed to fully support high-performing teams. What you’ll do Define and drive the technical direction for Android experiences across high-impact product areas, building intuitive, elegant, a

Join us in building the future of finance. Our mission is to democratize finance for all. An estimated $124 trillion of assets will be inherited by younger generations in the next two decades. The largest transfer of wealth in human history. If you’re ready to be at the epicenter of this historic cultural and financial shift, keep reading. About the team + role Our group is building an elite team, applying frontier technologies to the world’s biggest financial problems. We’re looking for bold thinkers & sharp problem-solvers. Individuals who are wired to make an impact. Robinhood is where ambitious people do the best work of their careers. We’re a high-performing, fast-moving team with ethics at the center of everything we do. Expectations are high, and so are the rewards. Robinhood’s Money Experience team builds the customer-facing money movement experience in the app. The team owns core transfer flows and works across experiences like deposits, withdrawals, recurring deposits, transfer history, post-transfer pages, incoming wires, and guided transfer flows, including launches such as recurring extra cash. As a Android Engineer on the Money Experience team, you would build and improve Android experiences that help customers move money into, out of, and between Robinhood accounts. You would contribute to features like account selection, transfer validation, deposit and withdrawal flows, post-transfer experiences, and the migration to newer guided transfer flows, working as part of a mobile team that includes multiple Android and iOS engineers. These teams are based in our Menlo Park, CA office, with in-person attendance expected at least 3 days per week . At Robinhood, we believe in the power of in-person work to accelerate progress, spark innovation, and strengthen community. Our office experience is intentional, energizing, and designed to fully support high-performing teams. What you'll do Work with a fast-growing team to revolutionize finance at speed and sc

Join us in building the future of finance. Our mission is to democratize finance for all. An estimated $124 trillion of assets will be inherited by younger generations in the next two decades. The largest transfer of wealth in human history. If you’re ready to be at the epicenter of this historic cultural and financial shift, keep reading. About the team + role We are building an elite team, applying frontier technologies to the world’s biggest financial problems. We’re looking for bold thinkers. Sharp problem-solvers. Builders who are wired to make an impact. Robinhood isn’t a place for complacency, it’s where ambitious people do the best work of their careers. We’re a high-performing, fast-moving team with ethics at the center of everything we do. Expectations are high, and so are the rewards. Robinhood has been tapped as the brokerage and initial trustee for Trump Accounts, and is working alongside BNY and The U.S. Department of Treasury to develop and operate the program, which aims to expand market access for the next generation of Americans. In this role, you will help build a world-class, intuitive platform, leveraging Robinhood’s industry-leading financial technology to deliver a standalone web and app experience for this historic national initiative. The Government Products team focuses on building and scaling systems that support long-term investing and account management for millions of customers. This team works closely with product, data, and infrastructure partners to deliver reliable, secure, and intuitive experiences. You will help shape systems that enable customers to plan for their financial future with confidence! As an Android Engineer on the Government Products team, you’ll help build mobile experiences for a historic initiative designed to expand market access for the next generation of Americans. You’ll ship intuitive, secure, and scalable features that make long-term investing and account management feel simple and accessible, while partneri

At Lyft, our purpose is to serve and connect. We aim to achieve this by cultivating a work environment where all team members belong and have the opportunity to thrive. Our core philosophy is to empower developers to self-serve rather than be bottlenecked by a central quality team. We believe that by creating smart, automated tooling, we can eliminate common roadblocks, making developers happier and more productive. The Rider Quality team is focused on elevating quality, testing, and accessibility across our mobile platforms. We are currently shifting our strategy to heavily leverage automation and AI to revolutionize how we approach testing. We're not doing traditional QA - we're building the future of quality engineering. This is a chance to step into a Senior role where you won't just write code; you'll design systems that define how hundreds of engineers deliver product faster, happier, and with fewer bugs. We are fundamentally shifting away from manual processes and existing automation frameworks that struggle to keep up, betting heavily on Artificial Intelligence and agentic frameworks to drive a massive "shift left" in our organization. Success in this role is measured by tangible impact, including increased developer satisfaction, engineering hours saved, and bugs/incidents avoided in production. We are seeking a highly skilled and innovative Senior Software Engineer to join our team. You will be instrumental in building the next generation of our quality assurance platform. You will be responsible for designing and developing advanced AI-powered tooling for test case generation, review, and execution. Your work will directly impact our ability to provide fast, actionable feedback to developers, "shifting left" to ensure quality from the earliest stages of development. You will play a key role in integrating these tools into our existing developer workflows, ensuring seamless adoption and maximum impact. We are looking for someone with a strong background in

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. Important to read before submit application: This role must be physically based in China. The Community You Will Join: Community Support Engineering (CSE) has increasingly become a key driver of enabling Airbnb's core business. Community Support Engineering is responsible for the world-class technology, architecture, and solutions that power CS at Airbnb. The products and capabilities we build empower our guests and hosts, CS agents, and operations teams around the world. As a member of CSE in China, you will have a great opportunity to make lasting impacts on the Airbnb CS user experience. The Difference You Will Make: We are seeking a highly skilled and motivated engineer who is passionate about making a difference through their work. As a Staff Software Engineer, you will be the technical lead in a team of talented and diverse software engineers leading the project execution to improve Airbnb customers and agents experience. You will lead the team and work with global technical leaders to build and evolute CS engineering foundations, such as Routing, Data platform, Case management, foundational toolings etc A Typical Day: Collaborating with cross-functional partners to deeply understand business problems before developing project solutions. Leading the execution of projects across the full software development lifecycle, including technical design, implementation, testing, and deployment, ensuring solutions are high-quality, scalable, and performant; Driving productive and constructive technical discussions with peers and cross-team technical leaders in the global collaborati

Discord has a highly engaged community of millions of daily active users who use the platform for many different reasons, but there’s one thing that nearly everyone does: play video games. Discord plays a uniquely important role in the future of gaming, and we are focused on making it easier and more fun for people to hang out before, during, and after playing games. The Consumer Revenue org sits at the center of how we build a sustainable business around that community. We're looking for a Staff Engineer to join teams working across premium experiences and core user identity, shaping the technical strategy that ties it all together. You'll work across surfaces like Nitro, Shop, Server Boosting, and User Identity to build a premium Discord that delivers real value to subscribers without compromising the core experience for our free users. In this full-stack product engineering role , you'll collaborate cross-functionally with Product, Data Science, Design, Marketing, and other functions to create best-in-class consumer experiences. Your work will cover the full breadth of the technical stack, from backend data modeling, through business logic in APIs, to polished, user-facing interfaces. You’ll be supported by infrastructure, platform, and product teams on your mission to build the best premium Discord Check out some of our recent launches on Nitro , Shop , Server Boosting , User Identity , and more . To learn more about Discord Engineering, take a look at our engineering blog ! What You'll Be Doing Accelerate growth of existing revenue streams while laying the foundation for new monetization opportunities across surfaces like Nitro, Shop, Boosting, and User Identity. Own complex initiatives end to end by partnering with Product to refine requirements, create technical specs, and work closely with Design to execute and deliver best-in-class user experiences. Collaborate with Staff Engineers and partners across the organization to drive technical alignment across sys

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: The Host Pricing & Settings team builds the platform and tools that help hosts run their business — with pricing strategies informed by market intelligence, comparable listings, and demand signals. We partner with Search, Listings, Tax, and Payments to ensure our guidance is accurate, timely, and trusted. Behind every pricing recommendation is a sophisticated ML system undergoing a fundamental rearchitecture. Our north star: a serving infrastructure where training, inference, and evaluation are consistent by design — features from a centralized store, model composition in one place, and backfills available on demand so data scientists and MLEs can evaluate candidates in days, not weeks. The Difference You Will Make: As a senior technical individual contributor, you will own the technical strategy for the full Modeling → ML Serving → API interface across the Host Pricing org. Although you will be at one of our highest levels of seniority, all individual contributors at Airbnb are Software Engineers — you are expected to be hands-on and contribute code. Define the architecture and contracts governing how models move from development to production — feature store design, model schema management, online/offline inference consistency, and multi-version support. Lead the buildout of a unified serving stack that eliminates per-model one-off implementations and gives data scientists a turnkey path from training to production. Architect backfill and evaluation infrastructure so the modeling team can simulate production inference over historical data in days, not weeks. Establish do

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: Our mission at Marketing Technology is to provide a state-of-the-art platform and measurement capabilities to enable marketing and product teams to engage with our customers effectively. Every day, millions of Airbnb customers are reached via our streamlined platform over comprehensive marketing channels such as Email, Push, SMS, Google Ads, Facebook Ads etc. We deliver substantial business impact by enabling numerous stakeholders across the company, including Marketing (Brand and Performance), Guest, Host, Airbnb Org, Policy, and more. The Difference You Will Make: As a Senior Staff Software Engineer on the Content Platform team, you'll set the technical direction for the org's transformation into an AI-driven system that turns a marketing brief into a fully realized campaign in minutes, not months. You'll own the technical strategy across a complex, multi-team surface area spanning a CMS platform, no-code authoring tools, rendering infrastructure, and an emerging agentic layer, all operating at a scale where the content produced is consumed by millions of Airbnb users daily. You will partner with engineering leadership, product, design, and marketing stakeholders across the company to define multi-year technical strategy, resolve the org's hardest cross-team technical challenges, and raise the bar for engineering excellence across Marketing Technology. A Typical Day: As a Senior Staff Software Engineer on Content Platform, you will: Define and drive technical vision and strategy for the Content Platform org, ensuring architectural decisions scale across teams and ali

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join The Quality Platform team is at the heart of Airbnb’s mission to deliver a seamless, high-quality experience for millions of hosts and guests. We don’t just find bugs — we build the systems that prevent them. Our team sits at the intersection of Quality Engineering, Infrastructure, and Applied AI . We are evolving how software quality is built by integrating LLMs, intelligent automation, and data-driven systems into the testing lifecycle. You will join a high-impact group of engineers focused on building AI-powered quality systems that scale across one of the world’s most complex codebases. The Difference You Will Make As a Software Engineer , you will play a key role in building and evolving AI-native quality workflows across Airbnb. You will design systems that apply AI directly to the testing lifecycle , helping developers and quality engineers build, validate, and ship high-quality software at scale. In this role, you will: Build AI Agents for the Testing Lifecycle: Design and implement AI agents that support developers and quality engineers across the testing lifecycle — from test case generation and evolution to automation and maintaining test coverage as the codebase changes. Advance AI-Native Quality: Move beyond traditional automation by building systems that continuously adapt test coverage based on code changes and system behavior. Improve Developer and QE Productivity: Identify bottlenecks in testing and CI/CD workflows, and solve them through intelligent automation that reduces manual effort and accelerates feedback loops. Integrate AI into Engineering Workflows: E

Discord has a highly engaged community of millions of daily active users who use the platform for many different reasons, but there’s one thing that nearly everyone does: play video games. Discord plays a uniquely important role in the future of gaming, and we are focused on making it easier and more fun for people to hang out before, during, and after playing games. We're looking for talented Senior Software Engineers to join our Consumer Revenue squads, the teams at the heart of premium experiences at Discord. You’ll be building out a premium Discord for millions of subscribers, focusing on surfaces such as Nitro, shop, boosting, user identity, and more. Your work will be vital in delivering a high-value premium experience, without compromising the core experience for our free users. You’ll be a key driver in generating the revenue that fuels Discord’s mission. In this product engineering role, you'll collaborate cross-functionally with Product, Data Science, Design, Marketing, and other functions to create best-in-class consumer experiences. Your work will cover the full breadth of the technical stack, from backend data modeling, through business logic in APIs, to polished, user-facing interfaces. You’ll be supported by infrastructure, platform, and product teams on your mission to build the best premium Discord. Check out some of our recent launches on Nitro , shop , boosting , user identity , and more . To learn more about Discord Engineering, take a look at our engineering blog ! What You'll Be Doing Build and improve premium Discord experiences such as Nitro, shop, boosting, user identity, and more. Own projects end to end by partnering with Product to refine requirements, create technical specs, and work closely with Design to execute and deliver best-in-class user experiences. Work with a team of full-stack engineers to ship new features across Web, Android, and iOS. Lead complex initiatives from conception to completion, thriving in ambiguous environments.

Discord has a highly engaged community of millions of daily active users who use the platform for many different reasons, but there’s one thing that nearly everyone does: play video games. Discord plays a uniquely important role in the future of gaming, and we are focused on making it easier and more fun for people to hang out before, during, and after playing games. Discord is used by over 200 million people every month for many different reasons, but there’s one thing that nearly everyone does on our platform: play video games. Over 90% of our users play games, spending a combined 1.5 billion hours playing thousands of unique titles on Discord each month. Discord plays a uniquely important role in the future of gaming. We are focused on making it easier and more fun for people to talk and hang out before, during, and after playing games. Game Records are the core of our gaming conversation. It is the fuel that drives the most popular gaming features on Discord, and allows us to unlock new experiences for users and opportunities for game developers. The Game Records team is directly responsible for “source of truth” systems that drive detection and safeguard metadata for hundreds of thousands of games. This puts our team in a position to consult and participate in some of the biggest features, partnerships and game-related launches at Discord. Our engineering culture values collaboration, and this is exactly how this team works. Come and join us! What You'll Be Doing Engage with developers, game studios and other partners to find opportunities and address challenges towards providing a more rich experience for players while gaming and engaging with online communities. Partner with other internal teams to design, build, and maintain features that help users connect and make friends through gaming on our platform, across desktop and mobile. Expand and safeguard our growing collection of games and game-related metadata, that helps drive nearly every gaming

About Us Twitch is the world’s biggest live streaming service, with global communities built around gaming, entertainment, music, sports, cooking, and more. It is where thousands of communities come together for whatever, every day. We’re about community, inside and out. You’ll find coworkers who are eager to team up, collaborate, and smash (or elegantly solve) problems together. We’re on a quest to empower live communities, so if this sounds good to you, see what we’re up to on LinkedIn and X , and discover the projects we’re solving on our Blog . Be sure to explore our Interviewing Guide to learn how to ace our interview process. About the Role The Discovery Team in App Experiences manages a wide array of features and systems to help communities form, grow, and thrive on Twitch. These features let people participate in their favorite communities and discover new ones more efficiently. We work hard to bring novel opportunities to the world of streaming both individually and in collaboration with similar streamers. Our consumer facing features span both web and mobile surfaces, we’re working hard to build fast, reliable, and easy to understand client-side experiences. This position is primarily focused across the entire stack (React and Golang) but will lean initially more toward backend systems, with future efforts moving more client-side. This position is in San Francisco, CA. You Will: Work with product managers, technical leads, and other engineers to design, develop, launch, and operate interactive experiences Investigate, instrument and solve performance problems Build distributed applications at scale Collaborate with both your team and related teams - fostering shared understanding of how to solve common problems and deliver solutions Work backwards from customer problems to drive business impact You Have: 1+ Years experience developing software in a professional environment Prior experience building consumer-f

Who we are About Stripe Stripe is a financial infrastructure platform for businesses. Millions of companies - from the world’s largest enterprises to the most ambitious startups - use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work ahead. That means you have an unprecedented opportunity to put the global economy within everyone's reach while doing the most important work of your career. About the team Stripe is beloved by developers for the simplicity of our APIs, the thoroughness of our documentation, and our focus on developer experience. The Technical Solutions Engineering (TSE) team is the glue that supports our developer-users and champions developer experience as being central to the overall experience of our users. TSE interacts directly with developer-users more than any other team at Stripe, so your role will have a significant impact on what Stripe is known for and values most. When we do our job well, developers all over the world are able to smoothly launch and grow their businesses on Stripe, whether they’re integrating payments for the first time or building complex financial systems. What you’ll do TSEs understand the fundamentals of programming incredibly well and eagerly jump in and familiarize themselves with others’ code. You will do a wide variety of things, including explaining technical concepts about Stripe’s products, build and debug integrations with developers, and produce/improve guides that help our users solve particular problems to be successful with Stripe. You will interact with developers of all skill levels through a variety of mediums, enabling them to be successful when using Stripe. Early on, current team members will devote a large amount of time to teaching you and helping you get to a level of comfort and expertise with Stripe, its services, and how we interact with users. Later, we’d love