Software Engineer at Stripe | San Francisco

Join Our Innovative TeamAt Tonic, we are a dedicated group of creators who believe in connecting individuals through the joy of music, celebrating progress, and sharing experiences along the artistic path. Our team is diverse and spread across various locations, and we are committed to fostering an inclusive and equitable workplace for individuals from all backgrounds. We strongly encourage applications from underrepresented communities, including women, people of color, and LGBTQ individuals.If you think you could be a great fit for this role, even if you don’t perfectly match every criterion, we want to hear from you. Your unique skills may be exactly what we are looking for.Core Values• You thrive in a high-responsibility environment.• You are deeply committed to personal growth and self-reflection.• You treat your colleagues with kindness and celebrate their successes.• Your curiosity drives you to explore and learn continuously, fascinated by the motivations of others.• You value the human aspect of technology and aim to enhance it.What We’re Looking For• 5+ years of experience in high-growth startups, consumer products, or social applications.• Proficiency in React Native, Typescript, and Firebase.• A product and design-oriented mindset.• A desire to learn and explore new areas of the tech stack.• An open mind to new ideas and emerging technologies.• Bonus: Experience with or learning a musical instrument is a plus!Your Role• Engage with our current codebase, infrastructure, and team processes.• Collaborate with the Design Team to prioritize and implement designs effectively.

Join Condor Software as a Full-Stack Platform EngineerAt Condor, we are revolutionizing the financial infrastructure that supports clinical development. With billions invested annually in discovering and developing new therapies, we strive to connect clinical operations and finance into a cohesive system. By integrating real-time financial intelligence, we empower R&D and finance leaders with the tools they need to make informed, high-stakes decisions.We are an AI-driven, pharma-native infrastructure provider, scaling industry standards in collaboration with top-tier partners. Our platform facilitates prediction, control, and execution in the most complex R&D environments worldwide.The Importance of Your RoleHaving established ourselves as a trusted partner for enterprise teams, we are now focused on the challenging task of scaling our platform to meet increasing demands. As a rapidly growing company, backed by prominent investors like Felicis and 645 Ventures, this is a unique opportunity to contribute to the foundational infrastructure that will redefine how therapies reach patients.Your ResponsibilitiesAs a Full-Stack Platform Engineer, you will be pivotal in building and scaling the core platform that supports the financial intelligence infrastructure relied upon by leading biopharma companies. This role encompasses critical engineering tasks at the intersection of backend systems, cloud infrastructure, and intelligent automation, with a strong emphasis on reliability and scalability.Your primary focus will be on backend architecture, where you'll design and implement services that drive complex financial and operational workflows. You'll be instrumental in shaping data flow, workflow orchestration, and enabling emerging AI-driven capabilities. This role goes beyond simple integration; you'll be crafting robust primitives that support other teams as our product and customer base expand.Working as a core member of a cross-functional product team, you will closely collaborate with product managers, designers, quality engineers, and data specialists to transition features from concept to production. While backend expertise is crucial, you will also engage across the stack to ensure the platform's capabilities are effectively leveraged.

Tonic is rapidly expanding and we’re just getting started. Become part of our Growth Team at this critical juncture, where strategic decisions can exponentially amplify our reach in the coming year. We are seeking a driven, innovative, and analytical individual who is eager to experiment, conduct swift trials, and scale successful strategies. About TonicTonic is a social platform dedicated to sharing live music practice — where each session encourages others to listen, engage, and create music in response.Unlike most music platforms that cater solely to passive consumption, Tonic revolutionizes this approach. It’s not merely a “social feature” added to music; it’s a community woven through the act of making music itself.Musicians on Tonic perform live in “Studios” to share their practices, receive feedback, and unlock performance opportunities. It’s an innovative blend of community, game, and entirely unique within the music tech landscape.With over 300,000 musicians spanning 125+ countries, we’re shaping the future of music — one practice session at a time. About the RoleAs our Growth Lead, you will be a foundational member of Tonic’s team, playing a crucial role in discovering and enhancing new marketing channels. You will conduct experiments, analyze results to determine effective strategies, and help codify successful methods into scalable playbooks.You will collaborate closely with Ray (co-founder of Tonic) and a dynamic growth team, including experts from Duolingo, TikTok, and Google. What You’ll DoYou will spearhead user acquisition efforts and transform Tonic’s diverse growth levers — influencer marketing, paid promotion, referrals, and partnerships — into a self-sustaining ecosystem. You’ll analyze user behavior, identify trends in how musicians discover and share Tonic, and design experiments that leverage those insights to achieve scalable growth.Experimentation & R&D• Initiate and evaluate 0→1 experiments across influencer, paid, and referral channels• Identify and confirm new scalable growth loops• Analyze initial signals to determine which strategies to amplify and which to discontinueExecution & Collaboration• Manage timelines and deliverables for multi-channel campaign launches• Collaborate with product, design, and influencer teams to align messaging and targeting• Develop the narrative arc for each campaign — customizing the story and calls to action for various audiencesTracking & Optimization• Track CAC, conversion rates, and retention across initiatives• Suggest and implement A/B testing strategies...

SquareTrade delivers protection plans and insurance products to a large customer base. The Engineering team develops and maintains the systems behind these services, ensuring reliability and efficiency. Role overview The Software Engineer position in San Francisco centers on building and enhancing technology that supports SquareTrade’s commitment to customer service. This role involves tackling projects that promote technical growth and hands-on problem-solving. What you will do Contribute to the design, development, and maintenance of systems supporting SquareTrade’s services Work with other engineers to solve technical challenges and improve existing solutions Participate in projects that encourage learning and skill development Location This position is based in San Francisco.

Join our dynamic team at reteam as a Software Engineer in the vibrant city of San Francisco! We are seeking innovative and driven individuals to contribute to our technology initiatives.In this role, you will have the opportunity to work on exciting projects that push the boundaries of software development.

About MiddeskMiddesk is revolutionizing the way businesses collaborate by providing seamless business identity verification. Since our inception in 2018, we have replaced cumbersome manual processes with instant access to accurate and current data. Our platform empowers companies across various sectors to confidently verify business identities, accelerate customer onboarding, and mitigate risks throughout the customer journey.As a proud graduate of Y Combinator and backed by esteemed investors such as Sequoia Capital and Accel Partners, Middesk has been recognized in the Forbes Fintech 50 List and acknowledged as a leading authority in business verification by digital identity strategy firm, Liminal.About Middesk Engineering:At Middesk Engineering, we prioritize

A Better Built WorldAt Miter, we are dedicated to empowering construction contractors to build with confidence. Our success not only makes it easier but also accelerates the construction of vital physical infrastructure such as roads, bridges, utilities, data centers, and housing.For far too long, contractors in the construction and field services sectors have relied on outdated software—bulky, on-premise systems from the 1980s and 1990s.This is where Miter steps in. We harness the power of AI and integrated payment solutions to reconstruct the fundamental HR, finance, and operations systems that support our physical economy. With Miter, contractors such as Marathon Electrical, W.J. O’Neil, and Truebeck Construction are building stronger teams, managing job costs more effectively, and expediting jobsite operations.This vision resonates with many. Since our inception in 2021, we have grown to serve thousands of customers and achieved tens of millions in Annual Recurring Revenue (ARR), positioning us among the fastest-growing vertical software companies in history. To amplify our progress, we have secured over $50 million in funding from top-tier investors like Bessemer, Coatue, and Battery, who share our vision for the future.Hybrid vs. Remote Approach:We believe the real magic of Miter happens when we collaborate in person. However, we also value flexibility. For roles designated as hybrid, we encourage working in the office three days a week to foster connections, brainstorming, and stronger relationships. If you reside within a reasonable commuting distance to our offices in New York City or San Francisco, we request adherence to this hybrid model.For positions classified as remote or in locations without an office, there is no obligation to follow the hybrid model. We do arrange travel for onboarding and company or team-specific events a few times a year!About the Team and How We Work:Creating the operating system for the built environment is a significant challenge. We need to deliver a substantial amount of high-quality code in the years ahead, and to achieve this, we are cultivating an engineering culture focused on craftsmanship, ownership, and excellence.

Join us at Lever, a leading innovator in hiring software, as a Software Engineer in our vibrant San Francisco office. This role is an opportunity to become part of a dedicated team committed to enhancing talent acquisition through cutting-edge technology.At Lever, we pride ourselves on our culture of collaboration and continuous improvement. We are seeking passionate individuals who share our dedication to minimizing downtime and fostering a supportive environment. You will be integral in driving our values forward in our new Toronto office while contributing to our mission of transforming the hiring experience.THE TEAMIn our engineering team, we prioritize knowledge sharing and peer feedback, ensuring everyone grows and thrives. We are enthusiastic about automation, innovative chatbots, and providing exceptional user experiences. Your contributions will shape our approach to talent acquisition as we expand.THE TECH STACKLever utilizes our proprietary open-source MVC framework, Derby, which employs Operational Transformation for real-time data synchronization—similar to the technology behind Google Docs. Our infrastructure heavily relies on AWS, Docker, Node, MongoDB, ElasticSearch, and Redis. Tools like Hubot facilitate our deployment processes while Grafana provides insights into our systems. We emphasize automation and version control, utilizing Terraform and Chef to ensure consistency.

Join our dynamic team at Atlas as a Software Engineer in the vibrant city of San Francisco! We are looking for a passionate and innovative individual who thrives in a collaborative environment. As a Software Engineer, you will be responsible for developing cutting-edge software solutions that drive our mission forward.Your role will involve working closely with cross-functional teams to design, implement, and maintain software applications, ensuring they meet both functional and non-functional requirements. If you have a strong background in programming and a desire to work on impactful projects, we want to hear from you!

About the Role sesame is hiring a Software Engineer in San Francisco. This role focuses on building and maintaining software applications that improve user experience and support business goals. The team values collaboration and creative problem-solving. What You Will Do Design and implement software features and applications Maintain and improve existing codebases Work closely with teammates to solve technical challenges Location This position is based in San Francisco.

Join Metriport, a cutting-edge technology company based in San Francisco, as a Software Engineer. In this dynamic role, you will be responsible for developing innovative software solutions that enhance our product offerings. Collaborate with a team of skilled engineers to design, implement, and maintain high-quality software systems. If you are passionate about coding and eager to make a significant impact in the tech industry, we want to hear from you!

Join SquareTrade as a Software Engineer and be part of a dynamic engineering team that is shaping the future of technology solutions. We are looking for talented individuals who are passionate about software development and eager to contribute to innovative projects. In this role, you will work collaboratively with cross-functional teams to design, develop, and enhance our software applications.If you have a strong background in software engineering, a drive for excellence, and a desire to work on challenging projects, we want to hear from you!

Join Paraform, a leading recruiting platform that empowers top-tier recruiters to accelerate the hiring process for critical roles. Our platform has enabled notable companies such as Shopify, Palantir, Coinbase, Decagon, and Ramp to streamline their talent acquisition efforts.We are actively seeking a product-focused Software Engineer who is passionate about transforming the recruiting industry. This role presents an exciting opportunity to influence the vast resources allocated to staffing and recruitment annually, estimated in the hundreds of billions.As a member of our team, you will have end-to-end ownership of projects, utilizing one of the most valuable data sets in recruiting to tackle hiring challenges at scale. Your contributions will have a substantial impact on the lives of millions and will help redefine industry standards worldwide.Here are some intriguing challenges you will address:Develop intelligent algorithms for matching millions of candidates with companies using our proprietary data sources.Design innovative monetary and social incentives to enhance recruiter performance and earnings.Create essential tools for recruiter workflows that facilitate precise candidate matching (including AI notetakers, email sequencing tools, and browser extensions).Establish a new standard for how candidates discover their ideal jobs through recruiters, laying the groundwork for the next LinkedIn.Explore inventive strategies for increasing marketplace liquidity in emerging fields such as Legal, Finance, and Healthcare.About Paraform:Paraform is on a mission to modernize the fragmented hiring landscape, partnering with industry leaders like Cursor, Palantir, Windsurf, Decagon, Shopify, Coinbase, and Hightouch to attract world-class talent. Our rapid growth has seen us achieve an impressive 8× increase in revenue last year.As the first comprehensive AI recruiting marketplace, we connect companies with thousands of specialized recruiters and AI agents, ensuring a faster and more accurate hiring process.Our goal is to make hiring efficient, reliable, and scalable for every organization globally.

Senior Software EngineerEngineeringProlific is at the forefront of AI innovation, crafting the essential human data infrastructure that is transforming the AI development landscape. In an era where foundational AI technologies are becoming increasingly common, it is the quality and diversity of human-generated data that sets apart leading products and models.The roleWe seek impact-driven Software Generalists to join our expert team dedicated to supporting frontier model creators and enterprise AI application developers. As a full-stack engineer, you will collaborate across Prolific’s various domains to address customer and product challenges.This position offers an exhilarating chance to engage directly with pioneering AI companies, making vital technical decisions that balance agile startup execution with scalable, reliable engineering practices, as Prolific transforms research within the AI community. You will regularly collaborate in person with customers and our US team, while also working closely with our technology teams based in the UK.What you’ll bring to the roleOver 4 years of experience in a product engineering roleAbility to translate business concepts into effective software modelsCapacity to quickly learn and adapt across the breadth of Prolific’s domainsExperience working with both monolithic and distributed systemsExcellent communication and collaboration skills for direct customer interactionStrong understanding of modern web applications and architecture design patternsExperience in supporting applications within production environmentsSound judgment in technical decisions

Join the Beam Team!At Beam, we are revolutionizing the construction industry by eliminating the inefficiencies caused by excessive paperwork, tedious administrative tasks, and inadequate financial tracking. Our innovative software and financial tools empower builders across America, allowing them to concentrate on their core strengths.Our cutting-edge product integrates fintech and artificial intelligence into construction workflows, enhancing everything from project estimations to bill payments and expense management. This approach not only boosts efficiency but also enables a greater number of projects to commence successfully.Backed by renowned investors like Accel, Zigg, and Susa, our dynamic team operates from a stunning office in San Francisco’s Financial District. Our members hail from prestigious companies such as Stripe, Pipe, Traba, and Fieldwire.

Join Juicebox as a Software EngineerAt Juicebox, we are dedicated to empowering teams to overcome the challenges of talent acquisition.In today’s AI-driven world, human creativity is a priceless asset. In the competitive recruitment landscape, it's crucial to be proactive.Our platform is trusted by innovators at Ramp, Perplexity, and top AI laboratories, alongside over 3,000 clients ranging from dynamic startups to Fortune 500 giants.With a remarkable growth trajectory, having surpassed $10M in ARR with over 20% monthly growth, Juicebox is recognized as one of the fastest-expanding AI SaaS companies globally.We have successfully secured $36M in funding, including a notable $30M Series A led by Sequoia Capital, with participation from Coatue, NFDG, Lux Capital, Y Combinator, and BOND Capital.Your Role: As a Software Engineer, you will significantly influence our engineering strategies, collaborating closely with founders on critical inquiries such as:How can we enhance the ranking of profile results?What innovative filters or data sources can we integrate into our search engine?How can we ensure an exceptional user experience within the first five minutes of joining Juicebox?You will be responsible for designing, developing, and deploying product features end-to-end, many of which will leverage Large Language Models (LLMs).Recent initiatives have included fine-tuning models to extract pertinent insights from user profiles and establishing feedback loops to enhance search queries.Our technology stack features Next.js + React, Node.js, OpenSearch (Elasticsearch), AWS SQS, Spark, and various inference providers and LLMs.About YouYou have experience building projects from the ground up—whether a startup, significant project, or feature.You thrive in fast-paced environments and take ownership of your projects.You are hands-on, swift in execution, and learn best through practical application.You have demonstrated excellence in your education, work history, or in projects you've undertaken.You are willing to take calculated risks.You possess familiarity with our core technology stack: Next.js, AWS, etc.

At Comulate, we're revolutionizing the insurance back office through the power of artificial intelligence. Our innovative platform is designed to streamline costly and labor-intensive accounting processes, marking a pivotal step in our mission to unlock the vast capital tied up in manual insurance operations. Following our Series B funding announced in early 2025, led by BOND & Workday, we are poised for record growth and ambitious expansion plans.

At Magic, we are on a mission to develop safe AGI that propels humanity's progress in addressing the world's most significant challenges. We believe that automating research and code generation is the most promising pathway to achieving safe AGI, enabling us to enhance models and address alignment issues more reliably than humans can achieve alone. Our innovative approach integrates frontier-scale pre-training, domain-specific reinforcement learning, ultra-long context, and inference-time computing to realize our vision.About the RoleAs a Software Engineer at Magic, you will engage in developing core systems and product surfaces that directly influence model capabilities and enhance user experience.This position can align with areas such as Pre-training Data, RL Research & Environments, or Product Development, depending on your background and expertise. Regardless of placement, you will be expected to take full ownership of your work: identifying problems, crafting solutions, deploying to production, and iterating based on real-world results.Working with Magic's long-context models presents unique technical challenges, including large-scale data acquisition, long-horizon post-training loops, and developing product workflows that make complex model behaviors understandable and manageable. You will work closely with these constraints, creating systems that are both technically sound and production-ready.This role has the potential to evolve into a deeper specialization in data systems, post-training capability enhancement, or product engineering leadership based on your strengths and interests.What You'll Work OnDepending on your team assignment, your tasks may include:Developing and scaling large distributed data pipelines for pre-trainingDesigning filtering, mixture, and dataset versioning systemsCreating post-training datasets, evaluation frameworks, and reward pipelinesConducting ablations that translate capability goals into quantifiable improvementsBuilding comprehensive product interfaces that integrate seamlessly with the modelDesigning APIs, backend services, and frontend workflows for AI-first experiencesEnhancing the reliability, observability, and performance of production systemsWhat We’re Looking ForSolid foundation in software engineering principlesHigh ownership and comfort in navigating ambiguous problem domainsProven experience in building scalable production systemsAbility to reason through complex technical challenges

At PermitFlow, we are revolutionizing the construction industry through innovative applied AI solutions. Our mission is to tackle the significant challenges that builders face in understanding what can be built, where, and how. By leveraging our AI-driven workforce, we empower some of the fastest-growing construction firms to efficiently manage everything from permitting and licensing to inspections and project closeouts, thereby accelerating development in housing, clean energy, and infrastructure across the nation.Despite being a $1.6 trillion sector, the construction industry is plagued by delays, inefficiencies, and missed opportunities. PermitFlow has already transformed over $20 billion in development projects, providing unprecedented speed, accuracy, and visibility that enables contractors to minimize compliance time, mitigate risks, and scale confidently.As the U.S. embarks on a new capital expenditure supercycle impacting data centers, factories, housing, and renewable energy, your role at PermitFlow will be pivotal in constructing the AI infrastructure that underpins every construction project, driving the next wave of reindustrialization.We are proud to have raised over $90 million, recently completing our Series B round with support from premier investors such as Accel, Kleiner Perkins, Initialized, Y Combinator, Felicis, and Altos Ventures, alongside influential figures from OpenAI, Google, Procore, ServiceTitan, Zillow, PlanGrid, and Uber.This position requires a hybrid work schedule in San Francisco, with 3 in-office days each week.