Senior Frontend Engineer - Cryptocurrency Innovations

Join our dynamic team at SoFi Technologies as a Senior Frontend Engineer specializing in cryptocurrency solutions. We're at the forefront of financial technology, transforming the way people manage their finances. You will play a crucial role in developing user-centric applications that empower our customers to navigate the world of digital currencies seamle…

Join Wonderschool as a Senior Full Stack Engineer At Wonderschool, we believe every child deserves exceptional early childhood education that unleashes their potential. Our mission is to empower childcare providers—small business owners—by providing them with software, coaching, and support to successfully launch and grow their programs, while also collaborating with governments to enhance childcare infrastructure. We are at the forefront of creating an innovative platform that seamlessly integrates marketplace functionality, SaaS solutions, and public sector systems, increasingly powered by AI. Our products are designed to assist providers in managing all aspects of their businesses—from enrollment and marketing to compliance and daily operations. Our dedicated and agile team is committed to developing scalable systems. We prioritize individuals who take initiative, embrace rapid experimentation, and utilize modern tools—including AI and automation—to maximize their impact. Position Overview As a Senior Full Stack Engineer, you will play a pivotal role in developing the foundational systems that drive Wonderschool’s platform. You will enable providers to build and expand their businesses, empower governments to implement programs at scale, and assist families in accessing quality care. You will oversee features from conception to deployment, collaborating across front-end, back-end, and data layers to create high-quality, scalable products. This role requires a builder's mindset, as you will work closely with product, design, and go-to-market teams to transform real-world challenges into effective, user-friendly solutions. Success will be measured by your ability to deliver quickly, enhance system reliability, and leverage modern tools—including AI—to boost development speed and product effectiveness. Key Responsibilities Lead Product Development Design, develop, and deploy full-stack features that enhance experiences for providers, parents, and government entities. Manage the entire development lifecycle—from scoping and architecture to implementation and production support. Write clean, maintainable code with comprehensive test coverage. Identify and resolve production issues across the technology stack. Enhance Product Impact Collaborate closely with Product, Design, and Data teams to develop features that address real customer needs. Gain a thorough understanding of customer workflows and use cases. Contribute technical insights and tradeoff analyses to product decisions. Work collaboratively with go-to-market teams to refine user needs and improve product outcomes. Optimize Systems for Scalability Design systems and data models that facilitate complex workflows and enhance scalability. Continuously improve system performance and reliability. Proactively identify opportunities for automation and innovation.

Join lambda as an Engineering Manager focusing on Console User Experience. In this pivotal role, you will lead a talented team of engineers, driving innovative solutions that enhance user interaction with our console platform. Your expertise will be instrumental in shaping product roadmaps, influencing design decisions, and ensuring high-quality deliverables that resonate with our users.

Join the Firetiger TeamAt Firetiger, our vision is to empower entrepreneurs in creating one-person companies that generate over $1 billion in revenue.We are transforming the future of software companies by envisioning a world where autonomous agents take over the majority of operational tasks, reducing the need for human intervention.Unlike traditional software engineering tools designed for manual operation, Firetiger pioneers a revolutionary approach where success is defined by our customers, and our agents ensure those goals are consistently met through continuous monitoring and action.Founded by industry leaders Rustam and Achille, both former executives from Cloudflare and Segment, we are backed by Sequoia Capital and a network of innovative founders and executives from top tech companies.We are seeking a talented Product Engineer to create seamless interfaces between human users and AI agents, focusing on workflows, visualizations, and interaction patterns that simplify autonomous technical operations.

About FiretigerAt Firetiger, we're dedicated to empowering our customers to create successful solo ventures with billion-dollar revenue potential.We envision a future where every business operates as a software entity, with the majority of coordination seamlessly managed by autonomous agents rather than human intervention. Our aim is to facilitate software companies in becoming 'self-driving'.Unlike traditional software engineering tools designed for human interaction, Firetiger redefines operations by allowing customers to articulate success criteria from a top-down perspective. We then deploy intelligent agents to continuously monitor and ensure these objectives are achieved.Founded by Rustam and Achille, former leaders at Cloudflare and Segment, Firetiger is backed by notable investors including Sequoia Capital, and executives from Cloudflare, Segment, Amazon, Anthropic, Cursor, and Plaid.We are in search of a Product Engineer who will craft the interfaces that connect users with AI agents, developing workflows, visualizations, and interaction patterns that render autonomous technical operations both intuitive and actionable.The RoleFiretiger's intelligent agents proactively identify production issues before they reach our customers or alert our CEOs. Here's how it operates:We gather telemetry data with high precision and automatically model the architecture and functionality of your system.Customers articulate their objectives in natural language (e.g., 'customers should have OAuth configured correctly') which remain pertinent as infrastructure evolves.Agents autonomously diagnose issues, uncover root causes, and initiate remediation actions.You will engineer the product experiences that translate these complex autonomous investigations into user-friendly tools that engineers genuinely appreciate using. Additionally, you will contribute to the development of the agents themselves.This role offers the opportunity to take ownership from start to finish: engage with customers, define what needs to be built, create it, and refine it until it meets the highest standards.What You Will AccomplishAgent interfaces: Design intuitive interactions for engineers with AI agents, ensuring accessibility and usability.

About the RoleOpenAI is seeking a dynamic Engineering Manager to spearhead a team dedicated to creating innovative software systems that proactively detect and mitigate the misuse of cutting-edge AI models. In this pivotal role, you will be at the forefront of building production services, detection pipelines, and preventive mechanisms that safeguard the integrity of our frontier models while minimizing the risk of high-severity misuse.This position is primarily focused on system development; therefore, we are looking for a candidate with a robust software engineering background who is adept at constructing reliable systems capable of scaling to billions of users.Your Responsibilities:Lead a team of skilled software engineers in designing and developing detection and mitigation systems aimed at preventing frontier model misuse, particularly focusing on model intellectual property protection and distillation detection.Establish the technical roadmap and execution strategy: prioritize tasks, design solutions, implement them, iterate based on feedback, and measure impact.Develop scalable production systems: services, pipelines, tooling, instrumentation, and automation that align with the usage of frontier models.Collaborate closely with Research and Product teams to translate evolving model capabilities into actionable tests, signals, and mitigations deployable at scale.Champion strong engineering principles: architecture design, system reliability, performance monitoring, and operational excellence.Recruit and nurture an exceptional team across backend systems, data engineering, and applied machine learning domains.Anticipate potential failures at scale as agentic workflows become increasingly sophisticated.Ideal Candidate Profile:Experience in building systems within adversarial and rapidly changing environments.Comfortable navigating ambiguity and novel situations.Familiarity with security-related domains (e.g., abuse prevention, fraud detection, platform defense, authentication/identity, and managing adversarial environments).Ability to communicate effectively and build trust with senior stakeholders—demonstrating a pragmatic, collaborative approach while remaining composed under scrutiny.Proven track record of leading engineering teams and delivering production systems from inception to deployment.Strong technical acumen in system design, distributed architectures, data pipelines, and operational observability.

Join voxel as a Founding Forward Deployed Engineer, where you will play a pivotal role in shaping our technology solutions while directly engaging with clients. This is an exciting opportunity to leverage your engineering skills in a dynamic startup environment, driving innovation and customer success from the ground up.

Join Stripe as a Senior Staff Engineer specializing in Billing. In this pivotal role, you will lead initiatives to enhance our billing systems, ensuring they are scalable, efficient, and user-friendly. You will collaborate with cross-functional teams, including product managers, designers, and other engineers, to deliver innovative solutions that meet our customers' needs.

About MetaDAOMetaDAO is at the forefront of revolutionizing decision-making through innovative decision markets, empowering individuals and organizations to shape the most critical choices in the world.Our flagship offering is a cutting-edge fundraising platform that leverages decision markets to minimize the risks of fraud and misallocation for investors. Since its monetization in October 2025, the platform has achieved a remarkable run rate revenue of approximately $9 million annually.With $12 million raised from leading investors, we are dedicated to assembling a world-class team. If you share our belief in the transformative power of markets, we invite you to join us in this exciting journey.

Join our dynamic team at gumloop as a Solutions Engineer, where you will be at the forefront of driving innovative solutions for our clients. In this role, you will collaborate closely with cross-functional teams to design, implement, and support cutting-edge technology solutions that enhance customer experiences.You will leverage your technical expertise to understand client requirements and deliver tailored solutions. Your contributions will be pivotal in ensuring successful project outcomes and fostering long-term client relationships.

Truework is looking for a Python Engineer in San Francisco to help build and improve its platform. The work centers on developing scalable features and solutions that support both users and the company’s mission. Role overview This position involves collaborating with a skilled team to design, implement, and refine platform functionality. The focus is on writing clean Python code and contributing to projects that enhance the overall user experience. What you will do Work closely with other engineers to develop and maintain platform features using Python Take part in discussions and planning to ensure solutions are scalable and effective Help improve the experience for users through thoughtful engineering Location This role is based in San Francisco, California.

At Lapel, we are driven by the belief that the most hospitable companies will ultimately triumph. We are dedicated to creating the data, infrastructure, and tools that enable customer-facing teams to fully understand each customer and leverage that insight across the entire customer lifecycle at scale.While many internet businesses aspire to provide excellent customer service, their existing tools often hinder this goal. Our mission is to build a system that makes every customer interaction feel personal again by unifying context, coordinating actions, and bridging the gap between intent and experience.This is a technically ambitious undertaking that encompasses data infrastructure, AI, and systems design, all aimed at a profoundly human outcome: empowering software companies to serve their customers better. We refer to this as hospitality at scale.We are well-funded, supported by top-tier investors, and are already collaborating with remarkable companies, ranging from fast-growing startups to large enterprises. We look forward to sharing more details during our conversation.

About LindyAt Lindy, we are dedicated to creating an AI assistant that caters to everyday users, not just tech enthusiasts. Our Lindy Assistant integrates seamlessly with iMessage, managing email, calendars, and meetings, and can be set up in just two minutes. We aim to bridge the gap between powerful AI technologies and the lives of real people.The RoleThis internship is not about observing; you'll actively contribute by writing and deploying real code while receiving mentorship akin to that of a junior engineer from your first day. Expect to be challenged and to learn continuously throughout your experience.You will engage with a product that users rely on daily for managing their communications and schedules. With a broad scope and a rapidly evolving codebase, you will encounter a wealth of intriguing challenges to tackle.What You'll DoWrite and deploy production-level code — your work will result in live features, not just prototypes.Engage with the full technology stack: TypeScript/React/Node for the frontend and Python for the backend.Collaborate closely with fellow engineers through code reviews, daily standups, and design brainstorming sessions.Troubleshoot actual issues in a live product environment with real users.Be inquisitive, ask questions, and learn quickly.What We're Looking ForYou are pursuing a degree in Computer Science or a related field, or you are a self-taught programmer—either path is welcomed.You have a portfolio of projects: personal endeavors, hackathon entries, open-source contributions, or similar work.You have proficiency in at least one programming language and can learn new ones with ease.Familiarity with TypeScript, React, or Python is a plus, but expertise in all three is not required.Preferred QualificationsExperience with LLM APIs (such as OpenAI, Anthropic, etc.) or working on AI model applications.Knowledge of agentic workflows or tool-use patterns.You have built or launched something that users find valuable.What You'll ReceiveCompetitive hourly compensation.

Join our innovative team at Peregrine Technologies as a Web Engineer. In this role, you will be responsible for designing, developing, and maintaining high-performance web applications that enhance the user experience and drive business success. You will collaborate with cross-functional teams to implement new features, optimize existing functionalities, and ensure the scalability and security of our web platforms.

Join a dynamic client of Weekday, one of the fastest-growing startups from Y Combinator. Your application will be prioritized if submitted through this platform.About UsWe are an innovative early-stage startup focused on developing AI-driven tools that enhance consumer application user experiences automatically. Our product is already live and being utilized by millions of users worldwide, demonstrating impressive month-over-month growth.Supported by prominent investors and experienced operators, we are on an exciting journey ahead.Having raised over $5 million, we recently launched our product!The RoleWe are seeking a talented full-stack engineer to contribute to the development and scaling of our AI-powered experience editor. You will engage with both front-end and back-end technologies, significantly influencing our product and infrastructure.This role is high-impact, offering substantial ownership, rapid iteration, and real-world scalability exposure.What You'll DoDevelop essential features for our AI-driven editor and experimentation platform.Create scalable back-end solutions and deliver clean, user-friendly interfaces.Integrate new APIs and AI models to enhance intelligent user experiences.Work collaboratively with founders and customers.Take full ownership of projects from inception to completion in a fast-paced, hands-on environment.DetailsFull-time, in-person role located in San Francisco (Monday–Saturday).Must be authorized to work in the U.S.

Join Cloudflare as a Distributed Systems Engineer within our dynamic Data Platform team, focusing on Analytics and Alerts. In this position, you will play a pivotal role in building and optimizing distributed systems that power our data analytics capabilities, providing real-time insights and alerts to enhance our customer experience.

Company Overview At Specter, we are pioneering a software-defined "control plane" designed to enhance the real-world perception of physical assets. Our mission begins with safeguarding American businesses by providing them with comprehensive insights into their physical environments.To achieve this, we are developing a robust hardware-software ecosystem leveraging multi-modal wireless mesh sensing technology. This innovation allows us to significantly reduce the cost and time involved in sensor deployment by a factor of ten. Ultimately, our platform aims to serve as the perception engine for businesses, facilitating real-time visibility and autonomous management of their operational perimeters.Our co-founders, Xerxes and Philip, are deeply committed to empowering our partners in the rapidly evolving landscape of physical AI and robotics. We are a dynamic, rapidly expanding team comprised of talent from Anduril, Tesla, Uber, and the U.S. Special Forces.Position Overview Specter is seeking a dedicated Machine Learning Infrastructure Engineer to construct and optimize the ML systems that drive real-time perception and inference capabilities across our edge-cloud platform. This position will involve overseeing the training, deployment, and enhancement of computer vision and sensor fusion models, aimed at enabling autonomous monitoring and decision-making for our clients' physical assets.Key Responsibilities Include:Design and implement scalable ML training pipelines for computer vision applications, including object detection, tracking, classification, and segmentation.Develop efficient model serving infrastructures to facilitate real-time inference on edge devices with limited computational and power resources.Optimize models for deployment on embedded hardware, employing techniques such as quantization, pruning, TensorRT, ONNX, and CoreML.Create continuous training and evaluation systems to enhance model performance through feedback loops derived from production data.Establish data pipelines for the ingestion, labeling, versioning, and management of extensive multi-modal sensor datasets, including video, radar, lidar, and thermal data.Implement model monitoring frameworks, A/B testing methodologies, and performance analytics for deployed perception systems.Collaborate with perception researchers to transition models from research environments to scalable production across thousands of edge nodes.Construct tools and infrastructure for distributed training, hyperparameter optimization, and experiment tracking.

About StravaStrava is the ultimate app for individuals who embrace an active lifestyle. With a vibrant community of over 180 million athletes spanning more than 185 countries, Strava transcends mere workout tracking—it's a platform where individuals collaborate to achieve their goals, develop new habits, and surpass personal milestones. Regardless of your chosen sport or tracking method, Strava is here to support you. Join us and start crushing your goals today by beginning your journey with Strava.Our mission is straightforward: to inspire individuals to lead their most active lives. We firmly believe in the transformative power of movement to connect and propel people forward.About This RoleAs a key member of the Foundation engineering team at Strava, you will play a crucial role in ensuring the reliability and security of the infrastructure that supports millions of athletes on their journeys. You will develop the tools, frameworks, and platforms that are essential to delivering valuable features to our users.In your role as a Senior Engineer on the Foundation team, you will have the opportunity to enhance Strava's core platform. You will empower teams to innovate swiftly and confidently by enhancing the developer experience, creating tools, collaborating with teams, and ensuring that features are delivered safely and efficiently.We embrace a flexible hybrid work model, which means you will spend over half of your time on-site at our San Francisco office—three days a week.

Airbnb, founded in 2007, has revolutionized the way people travel by connecting over 5 million hosts with more than 2 billion guests worldwide. Our platform offers unique stays and experiences that foster genuine connections with communities around the globe.The Role:The Airbnb Payments team is dedicated to facilitating seamless monetary exchanges through user-friendly payment services, embodying our mission to 'belong anywhere.' We are constructing a premier payments platform capable of processing billions of dollars across 191 countries and 75 currencies through a complex network of payment partners. As we expand, we will be integrating new partners, licenses, compliance measures, and enhancing the payment experiences for both guests and hosts.As a Senior Staff Engineer and Technical Lead within the Payments Compliance organization, you will oversee the technical strategy and architectural vision across a comprehensive Compliance engineering landscape, which includes Policy Enforcement, Identity, Screening, Auditing, and Compliance Experience. Your focus will be to ensure the scalability and cohesion of compliance systems while aligning them with the broader objectives of the company in an increasingly complex regulatory environment.We seek a seasoned technical leader capable of bridging deep systems expertise with organizational influence. You will drive Compliance's strategic initiatives, defining component integration, identifying shared capabilities, and ensuring optimal use of platform investments made by partner teams. Your decisions will significantly impact Airbnb's compliance with obligations such as Anti-Money Laundering (AML), Know Your Customer (KYC), and sanctions screening, all while minimizing operational costs and enhancing customer experience.This role extends beyond the Compliance team, requiring collaboration with various engineering teams and cross-functional stakeholders across Product, Content, Legal, and Design.

Join Us at LangChain:At LangChain, we are committed to revolutionizing the world of intelligent agents. Our mission is to empower developers to transition their innovative prototypes into production-ready AI agents that organizations can depend on. Starting as a suite of widely used open-source tools, we have expanded to provide a comprehensive platform for creating, assessing, deploying, and managing agents at scale.Our cutting-edge solutions, including LangChain, LangGraph, LangSmith, and Agent Builder, are trusted by teams delivering real AI products, from startups to major corporations. With millions of developers utilizing LangChain, we proudly support organizations like Replit, Clay, Coinbase, Workday, Lyft, Cloudflare, Harvey, Rippling, Vanta, and 35% of the Fortune 500.Having raised $125 million in Series B funding from esteemed investors such as IVP, Sequoia, Benchmark, CapitalG, and Sapphire Ventures, we are poised for accelerated growth and innovation, allowing every team member to significantly impact our projects and collaborative processes. At LangChain, your input will help shape the real-world impact of this transformative technology.About the Role:We are seeking a passionate Education Engineer to facilitate the learning journey for developers and agent builders using LangChain, LangGraph, and LangSmith. In this dynamic role, you will transform cutting-edge applied AI research into engaging educational experiences, ranging from hands-on workshops and meetups to comprehensive online courses and recorded video tutorials.You will collaborate with our Applied AI and software engineering teams to design high-quality learning materials that elucidate essential concepts in Agentic AI, provide real-world applications, and empower external developers to effectively utilize our tools. This hybrid position marries technical expertise in software development with a commitment to education, community engagement, and effective communication.Your responsibilities will include:Collaborating with LangChain engineers to create educational content that introduces generative AI and agent-building principles utilizing LangChain, LangGraph, and LangSmith.Designing curriculums and learning pathways for our vibrant community of over 1 million developers and agent builders.Producing and delivering content in various formats:Online courses for LangChain Academy, video tutorials, and webinarsLive presentations at workshops, hackathons, meetups, and conferencesMaintaining and updating educational resources to reflect the latest advancements in AI technologies.