Senior Software Engineer - Mobile Application Developer Lead

Role Overview Jahnel Group is hiring a Senior Mobile Application Software Engineer. This role focuses on building and improving mobile solutions alongside a skilled group of engineers. The position is open to candidates based in Schenectady, New York, or those working remotely from within the United States.

About KalshiKalshi is pioneering the future of finance through innovative prediction markets, where individuals can trade on various outcomes, transforming inquiries about the future into tangible financial assets. After years of advocacy, Kalshi has successfully legalized prediction markets in the U.S., becoming the fastest-growing financial market nationwide, with diverse offerings across politics, economics, finance, weather, technology, AI, and culture.Our belief is simple: prediction markets are poised to become the world's largest financial market, enabling anyone to turn any question into a financial position.Vision: To establish the largest financial market on the planet.Mission: To bring more truth to the world through the power of markets.At Kalshi, we cultivate a culture of excellence by hiring talented individuals, promoting hard work, and celebrating our achievements together. We invite exceptional and ambitious candidates to join our dynamic team as we create the next generation of financial markets.Role OverviewWe are seeking a dedicated and results-driven Mobile Software Engineer to take charge of Kalshi’s mobile application experience. This role involves the development of our core trading and user-facing platform on mobile, with full accountability for feature delivery, performance, and long-term technical strategy.You will play a vital role in our mobile stack, designing, building, and launching production-quality mobile features from conception to deployment. As Kalshi continues to grow, this position will evolve, granting you greater influence over architecture, reliability, and team development. Success in this role requires strong technical judgment, the ability to navigate complex systems, and a commitment to delivering high-quality user experiences promptly.Key ResponsibilitiesOversee the development and enhancement of Kalshi’s mobile application, ensuring excellence in quality, performance, and user experience.Design, implement, test, and release customer-facing mobile features from start to finish.Develop and maintain a robust mobile application using Flutter, incorporating essential platform features such as notifications and biometric authentication.Work collaboratively with product and design teams to translate user and business needs into effective technical solutions.Architect user interfaces, manage application state, and ensure seamless integration with backend APIs.Make informed decisions and execute software development strategies to elevate the mobile application experience.

BitGo delivers secure digital asset infrastructure for institutions and retail investors, offering custody, wallets, staking, trading, financing, and settlement services. The company manages multiple Trust companies and processes a large portion of Bitcoin network transactions. BitGo is known as a leading independent custodian and staking provider. More details are available at www.bitgo.com. Location This position is based full-time in the New York office. In-person collaboration and teamwork are central to this role. Role overview The Frontend and Mobile Software Engineer will focus on building and enhancing cross-platform mobile applications. The work centers on delivering a strong customer experience for BitGo users. Requirements Significant experience with React or React Native

Join Our Team:At Notion, we empower individuals and teams to create exceptional tools for their most important work. In a digital landscape filled with countless applications, Notion stands out by offering a unified solution that connects documents, notes, projects, calendars, and emails—enhanced by AI to streamline your workflow. Our platform is trusted by millions, including renowned organizations like Toyota, Figma, and OpenAI, all of whom appreciate Notion for its versatility and ability to save resources.We believe in the power of in-person collaboration and prioritize team synergy. Therefore, all employees are required to work from our offices on Mondays, Tuesdays, and Thursdays, which we refer to as Anchor Days. Depending on the role, there may be additional office attendance requirements.About This Role:The evolution of mobile devices has transformed personal computing. The capabilities of a desktop computer are now conveniently housed within our pockets. By equipping users with the tools they need to create their own solutions, we aim to address challenges on the go. Our vision is to deliver a delightful, user-friendly mobile experience, and we're on the lookout for talented Android engineers to help bring this vision to life.Your Responsibilities:As part of the Mobile Platform team, your mission will be to develop a top-tier mobile application by facilitating the creation of high-quality, efficient features.Collaborate with mobile product teams to design and implement services, frameworks, and reusable UI components, while establishing guidelines for feature development on Android.Focus on enhancing the performance, reliability, and overall quality of our Android application.Drive improvements in developer efficiency through optimization of our build systems, mobile CI/CD processes, and release management.Qualifications:Analytical Problem-Solving: You approach problem-solving with a thorough understanding of context and are adept at breaking down complex issues to find elegant solutions, whether individually or collaboratively. You're also open to seeking assistance when necessary.Experience in Scalable App Development: You have a proven track record of collaborating with teams to create and maintain high-quality Android applications for a broad audience, and understand the principles required to scale an Android engineering team.Pragmatic Approach to Technology: You view technologies and programming languages through the lens of trade-offs, remaining adaptable and willing to learn new tools as needed.Empathy and Teamwork: You value collaboration and actively contribute to fostering a positive team environment.

About SunoAt Suno, we are revolutionizing the music industry by unleashing creativity, where every idea transforms into captivating sound. Our flagship product harnesses the power of cutting-edge music-generation technology, enabling users of all backgrounds to create high-quality songs featuring unique beats, instruments, and vocals. We are also crafting an unparalleled ecosystem of musical services, which includes Suno Studio, a comprehensive suite for audio editing, and Hooks, an innovative platform for creating and sharing dynamic music videos that breathe life into songs.Founded by passionate Harvard alumni just two years ago, Suno has already achieved remarkable milestones, including $200 million in subscription revenue. Our growth trajectory positions us among the fastest-growing AI startups globally, with a valuation of $2.45 billion as of November 2025 and $375 million in venture capital funding. To date, over 100 million individuals have produced music using Suno, supported by a talented team of 150 collaborators across multiple locations, including Boston/Cambridge, Venice Beach, San Francisco, and New York City.With more than 10 million downloads on the Play Store and a stellar 4.8 rating, our Android team is pivotal to shaping our product's future and driving the company's success.About the RoleWe are seeking a dynamic Mobile Engineering Manager to lead our mobile app development teams, focusing primarily on Android. In this role, you will be responsible for building and nurturing a high-performing engineering team dedicated to mobile innovation.What You’ll DoLead, mentor, and expand a talented team of mobile engineers and team leaders.Oversee recruitment, performance evaluations, career growth, and team culture development.Collaborate with product and engineering leaders to ensure cross-functional alignment and streamline efforts across distributed teams.Champion high standards in code quality, testing, and architecture, while balancing the need for rapid iteration with long-term sustainability and security.What You’ll NeedA minimum of 7 years in software engineering, with at least 3 years in a leadership role managing a mobile engineering team.Proven experience in writing production-level code and successfully leading engineering teams to deliver complex features from concept to launch.Ability to thrive in a fast-paced, ambiguous environment while effectively managing multiple priorities and deadlines.

About StubHub StubHub is dedicated to improving the global live event experience. The company helps attendees enjoy every step, from ticket search to event entry, and supports sellers ranging from individual fans to major promoters. StubHub’s platform aims to be the safest and most convenient ticket marketplace for millions of users worldwide. Role Overview The Mobile Foundations team, part of Consumer App Foundations (CAF), is hiring a Software Engineer II focused on React Native. This group builds and maintains the core React Native platform that powers StubHub’s consumer apps. Instead of delivering features directly to end users, Mobile Foundations engineers create shared architecture, cross-platform infrastructure, performance improvements, and developer tools. Their work enables product teams to move quickly while maintaining high quality. What You Will Do Develop and enhance the core React Native platform supporting StubHub’s mobile applications Work with cross-platform technologies and collaborate with native iOS and Android components as needed Build reusable systems and platform capabilities used by millions of users worldwide Focus on performance, scalability, and resilience of the mobile experience Support other engineers by improving developer velocity and owning foundational systems Who Thrives Here This position suits engineers who enjoy tackling foundational challenges, improving engineering workflows, and taking responsibility for systems that other developers rely on daily. Location New York, New York, United States

About RillaAt Rilla, we are pioneering the future of conversation intelligence software for offline commerce. Our platform is designed to record, analyze, and index conversations, providing unmatched insights that empower the physical businesses that form the backbone of our economy.Our mission is to democratize cutting-edge technology, making the innovations of the 21st century accessible to all sectors of the economy. As a testament to our success, we are among the fastest-growing companies in history, achieving a remarkable trajectory that includes $40M in revenue within just 3.5 years, a consistent 15% month-over-month growth, and a net revenue retention rate exceeding 170%. Our customer satisfaction score (NPS) even surpasses that of the iPhone!Your RoleAs our first dedicated mobile engineer, you will play a pivotal role in enhancing our mobile codebase, enabling us to deliver exceptional, real-time experiences for field users. You’ll take ownership of our mobile architecture, streamlining today’s velocity bottlenecks and building end-to-end workflows that address real-world challenges on a large scale.Are you passionate about technology? Do you dream of leading innovations that apply AI in impactful ways? Join us at Rilla, where you will collaborate with an extraordinary team and develop your skills to the fullest.Technologies We LeverageProgramming languages and frameworks such as React, React Native, TypeScript, and Python.Open-source tools including Node.js, PostgreSQL, Turborepo, Lodash, and Zod.Industry-standard build tools, including GitHub Actions, Terraform, and Spacelift.Our Core ValuesContinuous Learning: We seek individuals who are fiercely curious and committed to personal growth.Customer Obsession: We prioritize genuine solutions that address customer pain points over superficial metrics.Winning Mindset: We thrive on accountability, team learning, and rapid feedback.Empathy: Understanding our customers' real-world challenges is key to effective solutions.Fearlessness: We embrace risks and view failures as learning opportunities.

Mobile Team at Asana The Mobile team builds features that help teams stay connected and organized, even when away from their desks. Engineers collaborate closely with Product Designers, Product Managers, and other engineering groups to enhance the Asana experience for mobile users. The team maintains a codebase and culture designed for both productivity and enjoyment, combining established mobile practices with Asana's internal frameworks. Role Overview iOS Mobile Engineers at Asana step into meaningful work from the start, contributing to both the codebase and team processes. The company uses an Areas of Responsibility system, which clarifies roles and encourages professional growth. Engineers are supported in identifying and solving problems, always with a collaborative mindset. Location and Work Model This position is based in Asana's New York City office. The role follows a hybrid schedule, with in-office days required on Monday, Tuesday, and Thursday. During the interview process, a recruiter will provide more details about in-office expectations.

At Jahnel Group, we are committed to creating an outstanding environment where software developers can flourish. Our mission is to connect talented individuals with meaningful projects across the country, enabling us to develop some of the most sophisticated and engaging applications for our diverse clientele. As a rapidly expanding company recognized in the INC 5000 list, we maintain a close-knit team atmosphere with over 100 dedicated employees. If you’re seeking a vibrant workplace to advance your career, we invite you to join us for a casual chat over beer or coffee. Who You Are: We’re on the lookout for a Senior Mobile QA Engineer to become an integral part of our team. The ideal candidate should possess a strong passion for quality assurance throughout the development lifecycle, extensive experience in mobile QA, and a knack for mentoring others while working alongside our talented teams. If you thrive on testing mobile applications at scale, automating processes, and ensuring exceptional user experiences, we’d love to hear from you! Key Responsibilities: Oversee mobile testing initiatives conducted by both domestic and international QA teams. Enhance product quality by identifying and resolving issues prior to release. Continuously refine QA processes to boost efficiency and effectiveness. Collaborate closely with developers, designers, and product managers to deliver high-quality outcomes. Identify risks early in the development cycle to mitigate potential issues. Develop automated test scripts and frameworks for Android and iOS using tools like XCTest, XCUITest, Espresso, and UI Automator. Conduct usability and accessibility testing to ensure applications are user-friendly and inclusive. Champion QA best practices, driving enhancements in product and process quality. Lead and mentor junior QA team members, contributing to their professional growth.

At StubHub, we are dedicated to transforming the live event experience on a global scale. Our goal is to create delightful journeys for fans, from their initial search for tickets to the moment they enter the venue. We ensure that both fans and sellers, whether they are individual ticket holders or promoters of major tours, find StubHub to be the safest and most convenient platform for ticket transactions.We are on the lookout for a Software Engineer II to join our dynamic mobile engineering team, which is focused on developing AI-powered consumer experiences that will redefine our marketplace. This innovative team is reimagining how fans discover, evaluate, and purchase live events through highly personalized and intelligent mobile interactions. Instead of merely enhancing existing workflows with AI, we are creating new mobile-first interaction models powered by cutting-edge intelligent systems.As a key member of this team, you will collaborate closely with product managers, designers, backend developers, and AI specialists to bring early-stage initiatives from concept to production. You will have significant ownership over user-facing experiences utilized by millions of fans worldwide.This role offers the chance to work with high autonomy, allowing you to move quickly and play a pivotal role in defining the future of consumer interaction at StubHub.

BitGo is the premier infrastructure provider of digital asset solutions, offering comprehensive services including custody, wallets, staking, trading, financing, and settlement from secure, regulated cold storage. Established in 2013, our mission has been to empower clients to securely navigate the digital asset landscape. With a worldwide presence and numerous Trust companies, BitGo caters to thousands of institutions, including leading brands, exchanges, and platforms, alongside millions of retail investors globally. As a cornerstone of the digital economy, BitGo processes a significant share of Bitcoin transactions and stands as the largest independent custodian and staking provider for digital assets worldwide. For further insights, visit www.bitgo.com.This position requires full-time presence at our New York office to foster team collaboration and drive innovative problem-solving.We are seeking a talented Mobile Software Engineer with extensive React Native expertise to join our dynamic team and contribute to the development of cross-platform mobile applications aimed at enhancing the BitGo customer experience.

About EliseAIAt EliseAI, we are revolutionizing crucial sectors like housing and healthcare. Everyone deserves a secure home and access to quality healthcare, yet these essentials are often challenging to obtain. By seamlessly incorporating AI agents into existing workflows, we enhance efficiency, lower costs, and enrich the overall experience for all stakeholders.Housing: We streamline the process for renters to tour apartments, sign leases, submit maintenance requests, and maintain communication with their property management—bringing all necessary resources for housing into one cohesive platform.Healthcare: We simplify appointment scheduling, facilitate the completion of intake forms, and enhance communication between patients and providers, allowing everyone to focus on health rather than administrative tasks.With EliseAI, organizations can minimize manual tasks, enhance accessibility, and provide a seamless experience across essential services. Recently, we secured a $250 million Series E funding led by Andreessen Horowitz to further accelerate our mission.About The RoleAs a Full Stack & Mobile Software Engineer at EliseAI, you will be more than just a coder; you will be a pivotal player in driving operational efficiencies for businesses and enhancing lives. Rather than adhering to a prescribed playbook, you will create one. Each day will present opportunities to identify scaling solutions and execute them effectively. Collaborating with a team of talented engineers, you will take on significant responsibilities, lead projects, and witness your innovative ideas come to fruition.Key ResponsibilitiesRapidly contribute to our core software platform designed to automate the leasing process and enhance operational efficiency for our customers managing apartment communities.Design and implement new features that deliver increased value to our customers.Suggest impactful enhancements to our software architecture and design patterns.Foster and implement engineering best practices.Utilize automated testing and continuous integration/continuous delivery (CI/CD) to iterate rapidly on our products.Attract and engage top-tier talent to join our motivated team.

About ComúnAt Común, we are dedicated to empowering Hispanic immigrants by transforming their hard work into opportunities for upward mobility. Our focus begins with innovative financial services that facilitate their transition from cash-based systems to the digital economy.We provide checking accounts accessible through over 100 types of Latin American IDs, allowing deposits at more than 90,000 locations across the nation, international transfers to 17 countries at industry-leading rates, and 24/7 bilingual customer support with a sub-5 minute response time via email, chat, and phone.With an impressive annual transaction volume exceeding $1.5 billion and having surpassed $100 million in international transfers just six months post-launch, Común has secured over $50 million in funding from prestigious investors including Redpoint, Costanoa Ventures, and South Park Commons. Our team comprises seasoned professionals from renowned fintech companies such as Brex, Nubank, and Mercury.We believe that immigrants embody the spirit of entrepreneurship, fueled by relentless ambition and a vision for a brighter future for their families. Común is here to support them on every step of their journey.Discover more at comun.app/nosotrosRead our latest article hereAbout the RoleAs the Senior Mobile Software Engineer, you will take charge of the mobile experience that drives our distinctive banking platform. Your responsibilities will include shaping the product roadmap, transforming design concepts into functional applications, and refining our component library to ensure rapid deployment without compromising quality. Our technology stack features React Native, Expo, TypeScript, and GraphQL.Your ResponsibilitiesCollaborate with product, design, and backend teams to build and launch new features.Establish frontend patterns, tools, and processes that enhance development speed.Ensure robust testing and monitoring practices to maintain a stable, high-quality application.Advance our design system and component library for consistency and scalability.Work closely with leadership on technical planning and architecture.

Join Highbeam in revolutionizing business banking and cash management!Our innovative platform integrates AI-driven agents, automated financial workflows, and seamless financial products, designed to help businesses save valuable time and resources.Trusted by industry leaders such as Cuts, Tushy, and NYON, our customers have generated billions in sales.Our talented team includes alumni from prestigious companies like Shopify, Square, Toast, and McKinsey, and we have successfully raised $42M in equity from top investors including Acrew, FirstMark, Mayfield, and Two Sigma Ventures.

About Us:At Zealthy, we are on a mission to democratize high-quality healthcare, ensuring access for everyone, regardless of their location. We are in the process of creating the world’s largest and most trusted virtual healthcare platform, revolutionizing the delivery of care to make healthcare accessible to all.Founded by a visionary healthcare entrepreneur with a successful track record, including scaling a previous venture to a valuation of $5 billion, Zealthy is uniquely positioned for sustainable growth as we ambitiously pursue our vision. Our steadfast dedication to quality and accessibility is at the heart of everything we do.Our team is committed to making a difference for our patients. While our office culture operates Monday to Friday, often extending beyond standard hours, the true satisfaction comes from the significant impact we create together. Every team member plays a vital role in building something transformative. As a full-time member of our team, you won't just help shape the future of healthcare; you'll also benefit from our success through equity ownership, reflecting our belief that every contributor should be a literal and figurative owner of our mission.If you are not ready to fully commit to your role and contribute to the goal of building the largest and highest quality telemedicine company with in-person work four days a week, we encourage you to reconsider your application.Join us in redefining the future of healthcare.The Role:We are actively seeking a dedicated Mobile Engineer specializing in React Native. This is a full-time, on-site position based in New York, NY. If you are exploring remote or hybrid options, this role may not be the right fit for you.Your Responsibilities:As a React Native Software Engineer at Zealthy, you will join a dynamic team of five full-time engineers and work closely with the Founder/CEO and the Senior Medical Director.You will be tasked with rapidly developing our mobile application for both iOS and Android, using our mobile-friendly web app and initial design elements as a foundation.Your role will require in-person collaboration at our New York office, participating in daily standups, weekly sprint meetings (or a flexible Kanban process), and holding yourself accountable to a rigorous product development timeline.Being part of an early-stage startup means you may need to wear multiple hats, building the initial version of the mobile application with limited support from other engineers.As we grow, there will be opportunities for you to advance into a leadership role based on your performance and aspirations, fostering an ongoing dialogue with current leaders.

Role overview Asana’s Mobile team develops features that keep teams connected and productive, even when they are away from their desks. Engineers on this team collaborate closely with product designers, project managers, and other technical groups to deliver a seamless and reliable mobile experience. The team values thoughtful engineering, high code quality, and a collaborative approach, blending mobile best practices with Asana’s internal frameworks. This iOS Software Engineer position is based in New York City and follows a hybrid work schedule. Standard in-office days are Monday, Tuesday, and Thursday. Details about hybrid expectations will be provided during the interview process. What you will do Collaborate with product and design partners to deliver polished mobile features to users worldwide. Lead or contribute to technical initiatives aimed at improving engineering standards, code quality, and test coverage, while addressing technical debt. Write code that is clear, well-documented, and thoroughly tested. Support the team’s growth by providing feedback in code and design reviews, and by mentoring other engineers. Adopt and share the latest tools, SDKs, and practices to increase team efficiency. Take ownership of key Areas of Responsibility (AoRs) within the team. Requirements At least 3 years of experience building, releasing, and maintaining iOS apps, ideally with Swift. Current knowledge of trends and advancements in the iOS ecosystem. Strong commitment to code quality and maintainability. Motivation to create enjoyable and intuitive user experiences. Interest in mentoring and supporting the growth of others. Sound judgment in balancing creative solutions with sustainable code. Interest in AI tools and emerging technologies, with a willingness to learn and apply them to improve productivity and collaboration.

About SunoAt Suno, we are revolutionizing the music landscape by transforming imagination into sound. Our state-of-the-art music generation platform empowers users of all backgrounds to craft studio-quality songs featuring original beats, instruments, and vocals. We are also developing a unique ecosystem of musical experiences, including Suno Studio for professional audio editing and Hooks, an innovative way to create and share vibrant music videos.Founded by passionate Harvard alumni just two years ago, Suno has rapidly ascended to a valuation of $2.45 billion, achieving $200 million in subscription revenue and securing $375 million in venture capital funding. With over 100 million songs created through our platform, our diverse team of 150 bandmates collaborates across offices in Boston/Cambridge, Venice Beach, San Francisco, and New York City.Our Android team, boasting over 10 million downloads and an impressive 4.9 rating, is instrumental in shaping our product's future and driving our company's success.About the RoleWe are seeking skilled Android developers to join our dynamic mobile team. In this role, you will collaborate with seasoned engineers to enhance Suno's Android application, enabling music creation for millions of users.Listen to the Suno song we crafted for this role: https://suno.com/s/oEdmOtkZDLHCopSGWhat You’ll DoDesign and develop Suno’s Android app for an immersive music creation, exploration, and listening experience.Build foundational abstractions and libraries for interactive, high-performance media experiences.Take ownership of feature development from conception to execution.Play a key role in design and product decision-making across the app.Enhance the performance, aesthetics, and user experience of our products.What You’ll NeedA minimum of 3 years of professional experience in Android application development.Proficient in Kotlin and solid understanding of Android fundamentals.Experience with modern Android frameworks and libraries.Ability to work collaboratively in a fast-paced, agile environment.A passion for music and technology, and a desire to innovate.

Join Bubble, Inc., a leading platform revolutionizing mobile application development, as a Senior Full Stack Engineer. In this pivotal role, you'll leverage your expertise to create seamless mobile experiences that empower users to build and manage applications effortlessly.Your responsibilities will include designing and implementing robust backend systems, enhancing front-end interfaces, and collaborating with cross-functional teams to drive innovative solutions. You will play a crucial role in shaping the future of the mobile platform, ensuring optimal performance and user satisfaction.

About RadarRadar stands at the forefront of geolocation technology, providing cutting-edge geofencing SDKs, maps APIs, and AI-driven solutions tailored for marketing, fraud detection, and operational excellence.Why Join Radar?Trusted by a diverse range of clients, from dynamic startups to Fortune 500 companies.Experience robust scalability: we manage over 1 billion API calls daily across hundreds of millions of devices.Backed by top-tier investors, we have successfully raised $85.5M to support our ambitious goals.Embrace our high-performance culture, collaborating with driven and entrepreneurial teammates across all levels.Enjoy our modern office space located in the vibrant Flatiron district of Manhattan.Recognized as one of the top 10 best workplaces in NYC by Crain's.As we continue to expand, we are eager to bring on innovative thinkers like you.Role OverviewWe are seeking talented Product Engineers to contribute to the development of features across our mobile technology stacks. Our SDKs have been successfully installed on over 100 million devices globally, consistently handling 10,000 queries per second. Our open-source SDKs (Android, iOS) simplify the integration of geofencing, location tracking, and mapping capabilities into applications with minimal code. You will also enhance our demo applications, such as 'Waypoint', utilized both internally and by our clients for SDK testing.Our Work Culture:Many in our engineering team have backgrounds as technical co-founders or have interned at Radar, coming from prestigious institutions like Waterloo and Carnegie Mellon University. Our engineers typically fall into one of two categories: specialized expertise in a single technology stack or the versatility of a 'Multi-Stack' developer. At Radar, being a 'Multi-Stack' engineer means having the flexibility to explore various domains, including Mobile and Data Engineering. While you don’t need to master all areas, a passion for learning and adapting across different stacks is essential.