Mobile Engineer in San Francisco

About the Team Our team exists to empower DoorDash Mobile engineers. We are the champions of three core pillars: Quality, Velocity, and Efficiency. Ultimately, our goal is to build the supportive infrastructure that allows our fellow engineers to build, ship, and operate apps at massive scale—with confidence and ease. We believe that a great developer experience leads to a great customer experience. About the Role We are looking for an Engineering Manager to lead our Mobile Developer Experience team (also known internally as the Mobile Foundations team). In this role, you’ll not only set the technical vision but also nurture the culture required to build world-class mobile applications. Your team will concentrate on one vertical—ZeroKit, which enables rapid mobile prototyping via agents—and two horizontal infrastructure pillars: the iOS and Android monorepos. You will partner with senior engineers and stakeholders across the company to design systems that make our platform faster, more reliable, and more efficient. You will be a partner to your customers—your fellow engineers—working side-by-side to understand their hurdles and solve their immediate challenges. You’ll also look to the future, anticipating needs so we can deliver solutions before they become blockers. Crucially, this role will support our growing international engineering footprint and unified technology stack, meaning you and your team will work across our DoorDash, Wolt, and Deliveroo brands. This is a unique opportunity to lead a team through a mix of exciting greenfield initiatives and the refinement of established, successful tools. You must be located in the following locations for this opportunity: San Francisco, CA; Sunnyvale, CA; Seattle, WA; Los Angeles, CA; New York, New York. You’re excited about this opportunity because you will… Develop and maintain foundational components to enable DoorDash Engineers to excel at mobile engineering. Lead the development and strategy for ZeroKit to enabl

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. The Luxury team builds rich and creative features that set the standard for the ride-sharing industry. We're looking for a motivated Senior Engineering Manager to lead the team building app experiences, UIs, and infrastructure for Black, Black SUV, and other upmarket modes where quality is uncompromising. As a Senior Engineering Manager, you'll set the technical direction for the team, making tradeoffs between technical investments and product work, and communicating strategy transparently to your team and to leadership. You'll act as a critical technical leader across backend, frontend, iOS, and Android, taking holistic ownership of complex systems, defining strategic roadmaps, and driving cross-functional alignment and engineering excellence to improve the luxury experience. Ownership is a key quality for this team. You should be driven to track projects to successful completion and beyond, taking initiative to work with other teams and functions to ensure your team's work reaches users and drives impact. You'll also help shape product direction by developing a deep understanding of the customer. You'll lead a group of talented engineers, helping the team deliver business impact while staying open to change through constant experimentation. You'll collaborate with engineering, product, data science, design, and operations on programs that empower the team to iterate quickly, delighting our passengers and drivers. If you enjoy collaborating with technical and nontechnical partners on a product with real-world impact, this is the role for you. Responsibilities: Lead a team of talented backend, frontend, and mobile engineers and engineering managers who like to ship code and tackle hard engineering problems Mentor and guide the professional and technical development of your team members. Help d

At Lyft, our mission is to serve and connect. Fleets is a dynamic area working with 3rd-party partners to match autonomous, livery, and taxi fleets with the Lyft marketplace; managing programs for special vehicles like Express Drive rentals, electric, and premium vehicles; and crafting tooling for on-the-ground fleet operations. As an Engineering Manager on Global Growth, you’ll be responsible for setting the technical direction for the team, making tradeoffs between technical investments and product work, and communicating the strategy transparently to the team and to leadership. You will help shape the product direction by developing a deep understanding of the customer and working closely with cross-functional partners from Product, Design, Science, and Operations. You will lead a group of talented engineers and help the team to deliver business impact while being open to change through constant experimentation. If you enjoy collaborating with technical and nontechnical partners on a product with real-world impact, this is the role for you. Responsibilities: Lead a team of talented backend and mobile engineers who like to ship code and tackle hard engineering problems Mentor and guide the professional and technical development of your team members. Help develop their careers, and assign them to projects tailored to their skill levels, personalities, work styles, and professional goals Build teams that are collaborative, inclusive, and respectful of each other Set the technical vision and strategy for an evolving product area Co-own the product strategy with the product partner and ensure timely delivery with high quality of the engineering solutions Create plans for prioritizing technical and resourcing challenges in your organization Maintain a balance between building sustainable, high-impact projects and shipping things quickly Instill a spirit of continuous improvement in the team’s code, architecture, and processes Work closely with the Lyft recruiting team

TextNow is on a mission to make communications affordable and accessible for everyone. As a full MVNO operating our own mobile core network over LTE and 5G NSA, we have the unique advantage of controlling our network infrastructure end-to-end. We operate the HSS, PGW, and other critical network functions, giving us the flexibility to innovate and deliver exceptional service to millions of users. About the Role We are looking for a hands-on Tech Lead, Mobile Core Network Engineering to own the health and evolution of our mobile core platform. Our cloud-hosted core runs in AWS, with our mobile core vendor providing managed services for day-to-day operations. This role is the critical bridge between our vendor’s Managed Services team and our internal engineering, product, and operations teams. You’ll be the technical owner of the mobile core, combining deep technical expertise with strong coordination skills. You won’t just manage vendor deliverables—you’ll dive into the technical details, challenge approaches when needed, and ensure our core network evolves to meet the demands of a growing subscriber base. This role has a clear growth path into technical and people leadership as the team scales. A note on background: We know that people who have operated a mobile core at scale are rare. If you’re a strong SRE or infrastructure engineering leader with deep networking knowledge and a track record of managing complex, vendor-operated platforms, we want to hear from you—even if you haven’t worked with 3GPP technologies before. We’ll invest in helping you build the telco-specific domain knowledge. What You'll Do Own the Mobile Core Platform: Take end-to-end accountability for the health, performance, and evolution of TextNow's mobile core (HSS, PGW, PCRF, and related functions running in AWS). Drive capacity plann

At Lyft, our mission is to improve people’s lives with the world’s best transportation. To do this, we start with our own community by creating an open, inclusive, and diverse organization. As a Staff Android Engineer, on the Rider App group in the Rider org, you will work on one of Lyft’s most critical Rider flows. The Rider App group is responsible not only for the critical flows in the app but also the app platform and quality. We build and iterate on rider facing products that not only ensure a seamless experience for our riders, but also aim to build and deepen Rider-Lyft relationships. As an experienced app developer you will be solving complex problems, delivering significant impact and ensuring excellence for the Rider Android team. This means excellent development practices, scalable and reliable code architecture, and safe, rapid releases. You will not only influence the architecture, platform, processes but also influence the culture and coach, guide engineers across the group. Responsibilities: Work across our product teams to design, build, and release exciting features and products in the Lyft Rider application, used by millions of people every day Define long term roadmap and architecture based on technology and our needs Oversee major changes to our Android architecture Work with Product Managers, Designers, and other Engineers to deliver best in class user experience and collaborate closely with local and global colleagues Continuously discover, evaluate and implement new technologies to maximize developer efficiency Mentor and support other developers on your team with code reviews, design feedback, and advice and guidance Solve complex real-time data transfer and synchronization issues Implement pixel perfect designs with advanced interactions, which are a joy to use Experience: 6+ years of experience as an Android developer Experience with leading a technical team is a bonus Advanced knowledge of Java and Kotlin Familiarity with RxJav

Employee Applicant Privacy Notice Who we are: Shape a brighter financial future with us. Together with our members, we’re changing the way people think about and interact with personal finance. We’re a next-generation financial services company and national bank using innovative, mobile-first technology to help our millions of members reach their goals. The industry is going through an unprecedented transformation, and we’re at the forefront. We’re proud to come to work every day knowing that what we do has a direct impact on people’s lives, with our core values guiding us every step of the way. Join us to invest in yourself, your career, and the financial world. The role: SoFi's Associate AI Engineer, Finance Transformation is a hands-on builder within SoFi's Finance organization, focused on building agentic AI workflows that transform how Finance works from close and reconciliations to forecasting and reporting. Finance has one of the largest AI opportunity surfaces at SoFi: over a hundred identified use cases, an active champions network, and executive sponsorship. In this role you will build multi-step AI workflows on approved enterprise AI platforms, stand up the telemetry that measures AI usage, cost, and ROI across Finance, and help make AI outputs trustworthy enough for Finance decision-making in a controlled environment where outputs must be explainable, auditable, and reconciled to the number. You will work directly with the AI Transformation Manager for Finance, who owns use-case strategy and stakeholder engagement, and in close partnership with SoFi's AI SDLC and platform teams, who support the path from prototype to production. This is a build-focused role with an unusual growth surface: SoFi's AI Engineering ladder (through Staff and Senior Staff) is the visible progression path. What you’ll do: Build agentic AI workflows: Develop multi-step AI workflows such as planning, tool use, retrieval, structured orchestration on approved enterprise AI pla

Employee Applicant Privacy Notice Who we are: Shape a brighter financial future with us. Together with our members, we’re changing the way people think about and interact with personal finance. We’re a next-generation financial services company and national bank using innovative, mobile-first technology to help our millions of members reach their goals. The industry is going through an unprecedented transformation, and we’re at the forefront. We’re proud to come to work every day knowing that what we do has a direct impact on people’s lives, with our core values guiding us every step of the way. Join us to invest in yourself, your career, and the financial world. The role We are looking for a Staff Backend Engineer to help build the next generation of SoFi's digital asset custody platform. This engineer will design and develop the core services that power secure custody, blockchain transaction processing, wallet infrastructure, and institutional digital asset products. This role sits at the center of crypto infrastructure, working closely with Security, Platform Engineering, Product, Treasury, and Operations to build highly available systems responsible for protecting customer assets. The ideal candidate enjoys solving distributed systems problems, designing resilient APIs, and building financial infrastructure where security and reliability are first-class requirements. What you’ll do: Design and build backend services supporting SoFi's digital asset custody platform Develop secure transaction orchestration services for deposits, withdrawals, transfers, staking, and treasury operations Build integrations with custody providers, blockchain infrastructure, and institutional settlement networks Design APIs supporting retail and institutional crypto products Develop services supporting wallet lifecycle management and blockchain interactions Improve platform resiliency through redundancy, disaster recovery, observability, and automated recovery mechanisms Optimize trans

Employee Applicant Privacy Notice Who we are: Shape a brighter financial future with us. Together with our members, we’re changing the way people think about and interact with personal finance. We’re a next-generation financial services company and national bank using innovative, mobile-first technology to help our millions of members reach their goals. The industry is going through an unprecedented transformation, and we’re at the forefront. We’re proud to come to work every day knowing that what we do has a direct impact on people’s lives, with our core values guiding us every step of the way. Join us to invest in yourself, your career, and the financial world. The Role: We are seeking a highly skilled and experienced Staff Software Engineer to join our Test Platform team. In this role, you will have the opportunity to directly impact the design and architecture of our Developer Platform and tooling that enables SoFi engineers to create and deliver high-quality solutions. You will collaborate and partner with a curious team of engineers to design and deliver solutions that raise the testing and reliability standards for our backend and web applications. This new team will be focused on building a green field project to enable autonomous testing for our AI driven SDLC, leveraging cutting edge technologies to deliver a highly resilient and thorough platform. If you are a seasoned Staff Software Engineer with a passion for building products that just work and enabling developers to build reliable services, and a strong background in distributed systems, we invite you to apply for this exciting and new opportunity. What You’ll Do: Provide technical leadership for initiatives in Testing and Reliability, with a focus on integrating AI-driven automation and autonomous testing practices. Collaborate with product engineering teams to understand requirements and design platform capabilities that are efficient, robust, and developer-friendly. Architect and implement solution

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

About VSCO For years, we've helped photographers create their work. Now we're building what comes next. VSCO exists for photographers. Not as a side feature, not as an afterthought, but as the whole point. We build the connected system photographers rely on, and we've spent over a decade earning the trust of a global creative community that takes the craft seriously. Photography is at an inflection point. AI is reshaping what's possible for creative work, and that's where our mission shines. VSCO is building the full photographer's workflow: from creating and editing your work, to delivering it to clients, to running your business. All of it built thoughtfully, with photographers leading the way. We believe the future of photography tools creates more space for creativity, handling the busy work so photographers can focus on the craft. If you care about craft, community, and what technology can unlock for creative people, this is the work. We're a mission-driven and focused company where your work ships quickly, is meaningful, and reaches tens of millions of people worldwide. You'll have a real say in what we build and how we build it. We hire people who don't wait to be asked, naturally connect the dots, care about the quality of what they ship, and believe the best outcomes come from building together. About The Role If you are passionate about iOS development and excited to join a dynamic team of creators, we encourage you to apply for this position and help us empower creators worldwide. At VSCO, you'll have the opportunity to collaborate with talented individuals who share your passion for innovation and creativity. We're building an ecosystem of end-to-end tools for photographers, enhancing our existing product while creating entirely new tools and services. This is a crucial role for someone who will help define and drive that vision forward, shaping the way our users create, connect and earn. Join us in shaping the future of mobile technology and making a me

Who We Are HP IQ is HP’s new AI innovation lab. Combining startup agility with HP’s global scale, we’re building intelligent technologies that redefine how the world works, creates, and collaborates. We’re assembling a diverse, world-class team—engineers, designers, researchers, and product minds—focused on creating an intelligent ecosystem across HP’s portfolio. Together, we’re developing intuitive, adaptive solutions that spark creativity, boost productivity, and make collaboration seamless. We create breakthrough solutions that make complex tasks feel effortless, teamwork more natural, and ideas more impactful—always with a human-centric mindset. By embedding AI advancements into every HP product and service, we’re expanding what’s possible for individuals, organisations, and the future of work. Join us as we reinvent work, so people everywhere can do their best work. About The Role HP IQ's Wireless Technology Team works cross-functionally with Electrical Engineering, Software, Mechanical Engineering, Product Design, Industrial Design, Program Management, and Operations to develop next-generation wearable and AI-connected products. As a Lead RF Systems & Desense Engineer, you will own the RF system architecture from concept through mass production. You will lead RF integration across Wi-Fi, Bluetooth, UWB, NFC and emerging wireless technologies while driving RF desense, coexistence, and wireless performance for highly integrated products. What You Might Do Lead RF system architecture and integration for wearable and mobile platforms. Own RF desense investigations and mitigation across the product lifecycle. Define RF specifications, link budgets, validation plans and performance targets. Lead coexistence strategy for Wi-Fi, Bluetooth, UWB, NFC and other radios. Partner with antenna, EE, FW, ME and silicon vendors to optimize total wireless performance. Perform CST and ADS simula

We believe communication belongs to everyone. We exist to democratize phone service. TextNow is evolving the way the world connects, and that's because we're made up of people with curious minds who bring an optimistic yet critical lens into the work we do. We're the largest provider of free phone service in the nation. And we're just getting started. Join us in our mission to break down barriers to communication and free the flow of conversation for people everywhere. TextNow is looking for an experienced Data Developer with hands-on experience designing and developing data platforms. You will own the design, development, and maintenance of TextNow's data platform, enabling us to make effective data-informed decisions. You will be part of cross-functional efforts to build scalable and reliable frameworks that support allTextNow's business and data products. In this role, you can interact with different functional areas within the business and influence decision-making in a fast-growing mobile communications start-up. This role is about impact at scale. You’ll shape how TextNow builds and operates its systems in an AI-first environment where intelligent tooling is embedded into everyday engineering practice. Using AI is not optional, it’s expected. From design and architecture to implementation, testing, debugging, documentation, and operational analysis, you will actively leverage AI tools to increase velocity, improve code quality, and make better technical decisions. We provide a robust suite of AI-powered development tools and workflows to support you, and we expect you to continuously evolve how you use them to raise the bar for efficiency, clarity, and product excellence across the organization. What You'll Do Own TextNow's data warehouse, data pipelines, and integration points between various business systems. Design, develo

We believe communication belongs to everyone. We exist to democratize phone service. TextNow is evolving the way the world connects and that's because we're made up of people with curious minds who bring an optimistic, yet critical lens into the work we do. We're the largest provider of free phone service in the nation. And we're just getting started. Join us in our mission to break down barriers to communication and free the flow of conversation for people everywhere. TextNow is looking for an experienced Senior Web Developer to play a key role in the development of our voice and messaging platform on Web. You will be responsible for building high-performance, scalable, and feature-rich mobile applications that integrate voice, video, and messaging capabilities. You will work alongside a talented team of developers, product managers, and UX/UI designers to create intuitive and user-centric experiences. What You'll Do Design, develop, and maintain a high-quality Web application focused on voice and messaging features (voice calling, chat, real-time notifications, etc.). Write clean, maintainable and testable Web applications in Javascript using the latest programming techniques and frameworks Collaborate with cross-functional teams to define, design, and ship new features. Work with real-time communication protocols, such as WebRTC, SIP, and related messaging and voice frameworks. Optimize app performance to ensure smooth voice and messaging functionality, including audio quality, latency, and bandwidth usage. Troubleshoot and debug issues related to performance, crashes, and other bugs, ensuring a smooth and stable user experience. Own problems and solutions end-to-end, from ideation to deployment Experimentation is a key part of your workflow; be data-driven and make the right decisions for our customers Dep

TextNow is on a mission to make communications affordable and accessible for everyone. As a full MVNO operating our own mobile core network over LTE and 5G NSA, we have the unique advantage of controlling our network infrastructure end-to-end. We operate the HSS, PGW, and other critical network functions, giving us the flexibility to innovate and deliver exceptional service to millions of users. About the Role Join us in our mission to break down barriers to communication and free the flow of conversation for people everywhere. T extNow is looking for a new SecOps team member to secure, monitor , and enable automated response within our infrastructure. What You’ll Do Ensure Secure & Reliable Systems: Design, implement, and maintain security-focused infrastructure to protect TextNow’s services while ensuring reliability and scalability. Security Automation & Infrastructure as Code: Develop and enforce best practices using Terraform, Ansible, Crowdstrike , and AWS security tools , ensuring secure configurations, automated compliance checks, and infrastructure as code. Threat Detection & Incident Response: Participate in an on-call rotation to respond to security incidents, investigate vulnerabilities, and implement proactive measures to prevent future threats. Work closely with engineering teams to remediate security risks. Monitoring & Logging for Security: Improve observability by implementing security monitoring solutions, logging best practices, and alerting mechanisms to detect anomalies and suspicious activity. Access Control & Identity Management: Manage IAM roles, permissions, and policies to ensure least privilege access and enforce security controls across cloud and internal systems. Collaboration & Security Advocacy: Wo

About the Team DoorDash Digital Ordering is DoorDash’s leading SaaS business unit, offering a suite of products across online ordering, branded websites and mobile apps, loyalty solutions, and more that enable restaurants to reach customers and grow their revenue through their own first-party channels. The business is one of the fastest-growing segments within DoorDash, and yet is only scratching the surface of a generational opportunity to better serve hundreds of thousands of merchants across the Americas to help them grow their business and improve working lives in one of the country’s biggest industry sectors. Strategy & Operations sits at the center of that opportunity. The team partners with Product to set the strategy and vision for every offering in the suite, across our SMB and enterprise merchants. We decide what to build, where to invest, and how to bring it to market, and we learn by putting products in front of merchants and running the experiments that show us what moves their business. As part of this team, the Associate Manager will take end-to-end ownership of a set of products and lead the cross-functional effort to grow them. Your work will be instrumental to helping transition DoorDash from a consumer marketplace to an industry-leading B2B SaaS company. About the Role As an Associate Manager on the Digital Ordering Strategy & Operations team, you will own a set of products within our first-party suite from end to end. You will set the strategy and priorities for those products in partnership with Product, be accountable for their growth, and lead the Product, Engineering, Analytics, Implementation, Sales, and Marketing partners who bring them to market. This role is ideal for a strategic operator who can move fast and wear many hats, equal parts analyst, builder, operator, and cross-functional leader. You will own zero-to-one experiments alongside products already operating at scale, help shape the roadmap with Product, and work directly