Backend Engineer - Member of Technical Staff

Why Weave ExistsAt Weave, we are on a mission to revolutionize the way therapeutic knowledge is captured, transformed, and communicated throughout the drug development process. Our innovative approach combines human expertise with advanced AI tools to accelerate the delivery of safe and affordable medications to patients.The Weave Platform enhances regulator…

About Us:Point One Navigation is at the forefront of redefining precise location technology. Our vision is to create a comprehensive location platform that empowers innovation, enhances safety, and boosts efficiency across various sectors, including robotics and transportation. We pride ourselves on being a dynamic and collaborative team that excels at tackling intricate challenges swiftly and effectively.The Role:We are on the lookout for a talented Staff Engineer to enhance our Backend Services team. In this pivotal role, you will be instrumental in shaping the architecture of our systems and developing services that underpin our global corrections network and real-time location capabilities.Key Responsibilities:Design, develop, and sustain high-performance backend services and network systems using Go and Java.Create detailed systems design documentation, architectural decision records, and comprehensive technical specifications.Engage actively in the formulation of technical strategies, architectural discussions, and infrastructure roadmap planning.Enhance the performance and reliability of mission-critical, globally distributed systems.Collaborate with cross-functional teams to deliver integrated solutions for real-time data processing and corrections delivery.Assume ownership of significant backend infrastructure components, ensuring their design, deployment, and continuous monitoring.

Join Our Mission at LeonaAt Leona, we are dedicated to empowering individuals to take charge of their health and well-being, along with that of their patients and loved ones. Our vision is clear: we aim to revolutionize the healthcare experience for everyone, making high-quality care accessible regardless of geographic location.Patients should feel empowered and comfortable in managing their health proactively, while healthcare professionals can focus on delivering exceptional care without the burden of administrative overhead. Our innovative platform enhances doctor-patient interactions via WhatsApp, acting as an AI clinical assistant to automate non-urgent tasks and provide patients with 24/7 access to their doctors.With offices in San Francisco and Mexico City, our diverse team brings a wealth of experience from renowned tech companies like Rappi, Uber, Modern Fertility, and Wonder. We are proudly supported by top-notch investors, including General Catalyst and Accel, alongside distinguished angel investors from successful firms like Nubank and Maven Clinic.If you are eager to learn, thrive in a dynamic startup environment, and are ready to roll up your sleeves to create something extraordinary, we would love to hear from you!The Challenge AheadWe are searching for a seasoned software engineer to help us scale and shape the future of Leona. Our platform is designed to transform doctor-patient communication, leveraging AI to streamline clinical workflows, reduce burnout, and enhance personalized care. If you are passionate about solving complex engineering challenges, enjoy a multifaceted role, and are excited to take products from concept to launch, this position is tailored for you.

Krew is revolutionizing the credit-servicing sector with cutting-edge AI-driven agents designed to enhance financial wellness. Our innovative approach is supported by notable investors such as Long Journey Ventures (Arielle Zuckerberg, Pascal Levy-Garboua) and prominent angels including Ryan Hoover (Founder, Product Hunt), Charlie Songhurst (Board Member, Meta), and Michael Jones (Former Chair, Huntington Bank Ventures). Our team consists of exceptional talent from renowned organizations including Figure Robotics, Optiver, Bain, and the United Nations, alongside top-tier engineers and researchers from institutions like the University of Chicago and Oxford. Currently, our omnichannel agents assist over 100,000 consumers on their journeys towards financial stability. Our ambitious goal is to resolve more than $1 trillion in outstanding consumer delinquencies globally, employing an empathetic and human-centric approach.Job Overview:We are seeking a talented Member of Technical Staff with a focus on backend engineering. The ideal candidate is a motivated engineer who prioritizes high-quality code and thrives in a collaborative environment driven by rapid innovation.Key Responsibilities:Architect and develop backend APIs and services that empower our AI agents and operational tools.Deliver user-facing features from conception through to deployment (including data modeling, API development, and UI integration).Enhance system reliability, observability, and performance across the engineering stack.Work closely with design, operations, and compliance teams to ensure the delivery of safe and compliant features.Write comprehensive tests, maintain code quality, and engage in design review discussions.Contribute to the evolution of our engineering standards and product development methodology.Minimum Qualifications:A minimum of 2 years of full-time professional experience in backend or full-stack engineering.Proficiency in backend development technologies such as Python or Go.Strong commitment to code quality, including testing, documentation, and code reviews.Preferred Qualifications:Experience in FinTech, Risk Management, or Compliance is advantageous but not essential.Familiarity with LLM/AI-powered products, event-driven architectures, or data processing pipelines.Knowledge of security, privacy, and compliance best practices.

Role overview Faire is seeking a Staff Backend Engineer to join the Discovery Experience team in San Francisco, CA. The focus of this position is on Search FX, where the goal is to improve search features so users can find what they need quickly and enjoy a seamless experience across the platform. What you will do Enhance and fine-tune backend search systems to provide relevant and rapid results. Collaborate with engineers, designers, and product managers to shape how users discover products. Apply technical expertise to build reliable and scalable solutions for search functionality. Collaboration This role involves frequent interaction with cross-functional teams. Sharing ideas, reviewing technical solutions, and helping guide the technical direction are all part of the work as the platform continues to grow.

About Vapi:At Vapi, we are pioneering the transition to voice as the primary interface for human interaction.Our platform offers unmatched configurability for deploying voice agents.In just two years, we have amassed over 600,000 developers, with an addition of 2,000 developers daily.Experience Vapi now!Why This Role is Essential:With a feature request every 30 minutes, we need an exceptional backend engineer to enhance our offerings.Your Responsibilities:First 30 Days: Familiarize yourself with our voice agent pipeline, a challenging yet rewarding task.First 60 Days: Take ownership of significant projects such as WhatsApp voice agents or automated reinforcement learning loops.First 90 Days: Engage with customers to design APIs that will provide lasting value and satisfaction.Who You Are:You have experienced the growth from Series B to F funding rounds.You have developed exceptional products that we admire.Bonus: You have entrepreneurial experience as a startup founder.Why Join Vapi:Generational Impact: Build the human interface for businesses across the globe.Ownership Culture: 70% of our team comprises former founders.Supportive Team: Our founders, Jordan and Nikhil, foster a kind and inclusive environment.Top-tier Investors: Backed by Y Combinator, KP Seed, and Bessemer Venture Partners.What We Provide:Equity Ownership: Competitive salary coupled with substantial equity opportunities.Comprehensive Health Plans: Medical, dental, and vision coverage.Team Bonding: Enjoy quarterly off-site events with your colleagues.Flexible Time Off: Take the time you need.Additional Perks: Catered meals, transportation support, gym memberships, and a $10,000 annual learning and development budget.

Join Giga's Innovative TeamAt Giga, we're on the cutting edge of technology, having successfully raised $61 million in Series A funding. Our pioneering real-time AI agents are designed to understand emotions, resolve customer issues instantaneously, and scale across some of the largest enterprises globally. We are proud to serve notable clients, including DoorDash.As we stand at a crucial turning point in our journey, we invite talented engineers to join us in achieving our vision of becoming the leading AI platform for enterprise automation, powered by our voice superintelligence.The work we do impacts millions daily, providing our engineers with the autonomy to shape their projects and make a tangible difference. With visionary founders, a successful business model, and a clear roadmap for future growth, this is an extraordinary opportunity to join a generational company.Learn more about us through these articles:Voice AI startup Giga raises $61M Series ADoorDash and Giga PartnershipYour Role as a Staff Backend EngineerWe are seeking a Staff Backend Engineer to be a key player in defining the technical strategy of our backend systems. You will be responsible for leading complex projects, making pivotal architectural decisions, and elevating engineering standards across our team.This position is tailored for those who want to be builders at heart. You will write code, take ownership of systems, and deliver results while also looking ahead to determine future development directions for our team.Key ResponsibilitiesYou will spearhead technical initiatives across the organization, including:System architecture: Innovating our agent infrastructure to seamlessly scale while balancing speed, reliability, and complexity.Challenging technical problems: Leading high-stakes projects where the consequences of failure could significantly impact our business.Technical strategy: Proactively identifying system gaps and proposing solutions to enhance our platform.

About 3Y HealthAt 3Y Health, we are at the forefront of revolutionizing healthcare administration through our innovative AI business manager. Our mission is to simplify the complexities that consume nearly 40% of the healthcare industry's revenue. Our robust platform equips clinician entrepreneurs with the tools they need to effectively launch, manage, and expand their private practices. With over $200 million in backing from leading investors like Founders Fund, General Catalyst, SoftBank, and 8VC, we are committed to empowering independent providers with advanced AI and automation solutions that save time, foster business success, and enhance care delivery within their communities.Position OverviewWe are on the lookout for a Backend Engineer who is passionate about designing and scaling high-performance backend systems that drive our AI-first platform. The perfect candidate will have a strong background in developing distributed services using languages such as Go, Java, Python, or TypeScript. A solid understanding of modern API design and communication protocols (REST, gRPC, GraphQL) is essential, alongside a commitment to delivering reliable, secure, and scalable infrastructure.Ideally, you have experience integrating AI functionalities—be it through external AI APIs, managing machine learning inference pipelines, or supporting data infrastructure for model training. You're more than just a code contributor; you care about how your systems are deployed, monitored, and maintained in production. Experience with regulated data environments such as healthcare or fintech is a plus.This role is suited for a hands-on engineer who thrives in collaborative, cross-functional settings, works effectively with product and frontend teams, and proactively builds systems designed for scalability, compliance, and maintainability.

Join Us at ApiphanyAt Apiphany, we are at the forefront of foundational AI technology, driving innovation in physical product development. Our mission is to support global leaders in automotive, aerospace, medtech, and energy sectors by transforming complex, unstructured technical data into actionable insights in real-time. With investment from notable firms like Markforged, Databricks, GM, and Character, we aim to redefine engineering decision-making, simplifying complexity for top-tier manufacturers worldwide.Our cutting-edge models are designed to tackle the intricacies of engineering and manufacturing, incorporating a deep understanding of physics, design specifications, and program constraints. We are a compact yet highly skilled team composed of builders from prestigious institutions including Stanford, Berkeley, MIT, UW, and CMU, alongside industry veterans from GM, Ford, and Genesis Therapeutics. Together, we share a passion for revolutionizing hard-tech and establishing a company that sets the standard in our field.Your RoleIn the role of Senior / Staff Backend Engineer at Apiphany, you will take charge of designing, building, and scaling the essential systems that drive our intelligence platform. You will be responsible for developing low-latency backend services and APIs capable of processing extensive engineering data streams, maintaining security and compliance, and architecting systems for optimal performance and availability. Additionally, you will influence long-term architectural decisions, guide your colleagues through mentorship, and establish best practices for scaling backend services to deliver robust and high-performance applications.

Join DoorDash as a Senior Staff Software Engineer in Backend Development, where you will play a pivotal role in creating and sustaining a robust, 24/7 global infrastructure system that fuels our dynamic three-sided marketplace of Consumers, Merchants, and Dashers. In this hybrid position, you will collaborate with cross-functional teams to develop innovative solutions that tackle complex business challenges, while mentoring junior engineers and contributing to our technical roadmaps.

About DEUNA DEUNA is an innovative startup transforming the landscape of global commerce with our groundbreaking AI-driven orchestration and payments platform, ATHIA. Our solution empowers large enterprises to enhance approval rates, minimize costs, and discover new revenue streams. Developed by a team recognized as the fastest-growing Commerce OS in Latin America, ATHIA integrates payment intelligence, checkout optimization, and data orchestration into a unified solution.With robust integrations across over 300 payment service providers and alternative payment methods, and with more than 20% of Mexico’s digital economy processed through our platform, we simplify global payment processes via a single integration and centralized reconciliation.As we expand into the U.S. market to fulfill the pressing requirements of large retailers, marketplaces, airlines, and quick-service restaurants (QSRs), we invite you to join us in shaping the future of payments! Role OverviewWe are on the lookout for a Backend Staff Engineer who will serve as a technical expert and architectural leader for our backend systems. This position focuses on tackling complex engineering challenges, scaling distributed systems, and establishing backend engineering standards across the organization.This is not a management role; instead, you will act as a technical authority, collaborating with Engineering Managers while taking charge of technical depth and backend architecture decisions. You will thrive in a dynamic startup environment where backend systems are critical to product capabilities.Key ResponsibilitiesBackend Architecture & System Design- Create and enhance scalable, secure, and resilient backend systems.- Architect high-availability APIs and distributed services.- Establish best practices for reliability, observability, and performance.Deep Technical Contribution- Write high-quality, production-ready backend code.- Lead refactoring initiatives and performance enhancements.- Identify system bottlenecks and implement scalable solutions.- Design data models, caching strategies, and asynchronous workflows.Technical Influence- Provide technical guidance across teams.- Facilitate complex design discussions and evaluate trade-offs.- Enhance backend development standards and documentation practices.Scalability & Reliability- Design systems capable of managing high-traffic and transaction-intensive workloads.- Define strategies for load balancing, scaling, monitoring, and failure management.- Optimize system instrumentation and monitoring practices.

About UsScribe is a dynamic company where outstanding talent thrives. With over 94% of the Fortune 500 relying on our platform, we empower teams to accomplish their tasks efficiently while continuously improving their workflows. Our innovative Workflow AI technology streamlines and enhances processes, enabling teams to work smarter and more consistently.Since our inception in 2019, we've experienced rapid growth, amassing over 5 million users across 600,000 businesses. Based in the heart of San Francisco, we have been recognized as a LinkedIn Top Startup and are valued at over $1 billion, supported by premier investors. Join us in transforming the way people approach their work.Our Work CultureWe are passionate builders dedicated to honing our skills. Our team values collaboration and shared success, embracing principles such as:Accelerating impactRaising the barEmpowering our usersClear communication is kindFostering rapid learningOne team, one visionAbout This RoleWe are seeking a talented and seasoned backend engineer to become a Staff Engineer on our Core Engineering team. This pivotal group is responsible for the most critical user experiences at Scribe, encompassing functionalities like viewing and editing Scribes, managing Pages, Embeds, Exports, and supporting essential Integrations. Your contributions will directly enhance how users create, share, and leverage documentation, significantly improving their effectiveness.If you are driven by a passion for addressing real user challenges and approaching problems with both practicality and elegance, this is your chance to work closely with designers, user advocates, and engineers across the technology stack to shape the future of Scribe. As a Staff Engineer, you will play a vital role in system design, elevate our engineering culture, and mentor fellow engineers.Your Responsibilities Will IncludeLeading the development of new features within our Django monolith, focusing on core experiences such as viewing and editing Scribes, Pages, Embeds, Exports, and related Integrations.Enhancing database queries, endpoints, and caching layers to boost performance and scalability in critical user workflows.Collaborating across teams to ensure seamless integration and user experience.

Founded in 2007, Airbnb has transformed the way people travel and experience new cultures. Starting with just three guests in a San Francisco home, we now have a thriving community of over 5 million hosts welcoming more than 2 billion guests worldwide. Our platform allows travelers to connect with local communities through unique stays and experiences.Join Our Vibrant Community:The Global Markets Tech team is at the forefront of enhancing guest and host experiences across the globe through innovative product development that drives international growth. Expanding into underrepresented markets is a central aspect of our strategy, and we adapt our products to meet the diverse needs of users in over 220 countries and regions.Collaborating closely with Product, Design, Data Science, and regional teams, we translate local market requirements into robust, scalable technologies that can be quickly piloted and widely implemented. Your Impact:We are seeking a strategic and innovative Staff Software Engineer (Backend) to spearhead the technical strategy for Airbnb’s global guest experiences. In this role, you will establish a technical vision and lead the development of high-availability, secure, and efficient solutions tailored to the needs of our international markets. You will collaborate with cross-functional teams, including product managers, engineers, data scientists, and designers, to address technical challenges and deliver exceptional products for Airbnb. A Day in Your Life:Lead the technical vision and oversee the architecture, prototyping, development, and deployment of solutions for international market initiatives, including market configuration, localization services, partner integrations, and compliance-aware experiences.Direct complex, cross-team projects from design to launch, managing team roadmaps, technical direction, migration strategies, rollout plans, and long-term operability.Promote engineering excellence through a focus on reliability, performance, security, and cost efficiency.Influence product roadmaps and work collaboratively with stakeholders across regions, facilitating alignment, resolving trade-offs, and navigating ambiguity.Mentor engineering team members to foster growth and innovation.

Join Saris AI as a Staff Backend Software Engineer, where you will play a pivotal role in developing innovative solutions that harness the power of artificial intelligence. In this dynamic position, you will collaborate with cross-functional teams, design scalable systems, and contribute to the overall architecture of our backend solutions.

Join Our Team at Unify!At Unify, we are at the forefront of innovation, developing the first AI-driven system of action for revenue teams. Our mission is to empower organizations by transforming outbound sales into their most effective growth accelerator, making go-to-market strategies observable, repeatable, and scalable. Founded in 2023 by visionary leaders from Ramp and Scale AI, our diverse team boasts experience from renowned companies such as Airbnb, Meta, Waymo, and Monday.com.In 2024, we achieved an impressive 8x revenue growth and currently serve esteemed clients like Perplexity, Cursor, SoFi, and Justworks. We’re a dynamic and high-energy team that has successfully raised $58M from prominent investors including Thrive, Emergence, and OpenAI. Be part of our journey to redefine the future of go-to-market strategies!About Us:Founded on January 17, 2023, by Austin Hughes and Connor Heggie, Unify aims to build the premier system-of-action for go-to-market teams, starting with an end-to-end platform that facilitates warm outbound sales. Today, the outbound sales landscape is cluttered with cold, mass outreach, yielding minimal conversion rates. Our innovative platform is designed to connect sales teams with the right prospects at the perfect moment.Our remarkable growth trajectory continues, with an 8x revenue increase year-over-year, and we proudly provide services to a wide range of clients, including Guru, Justworks, Together.AI, and Hightouch. Join our passionate, driven team and help us reshape the way go-to-market strategies function.Role Overview:As a Staff Software Engineer, you will lead the development of innovative products from inception to launch, collaborating closely with our founders. You will take ownership of critical engineering projects that deliver significant value to our customers while establishing the technical groundwork for Unify. This is an opportunity to work at the cutting edge of technology, leveraging the latest advancements in AI.Your Responsibilities:Collaborate with a highly skilled team in product, design, and engineering to shape our product roadmap and engineering foundation.

Join Our Crew at Ivo! At Ivo, we are not just engineers; we are creators on a mission to revolutionize the legal landscape with cutting-edge technology. As pioneers, we have introduced groundbreaking innovations, including:• An AI agent seamlessly integrated into MS Word to enhance your document editing experience [2023]• Advanced RAG techniques that surpass traditional embedding models [2023]• Large-scale LLM-based legal fact extraction capabilities [2024]• A legal assistant that navigates extensive contract databases with unmatched precision [2024]• Innovative clustering of related legal documents [2025]• Automatic deviation analysis for risk identification in vast contract databases [2025]• The ability to merge contracts with amendments for a comprehensive timeline of 'composite' contracts [2025] Your Mission as a Backend EngineerAs a vital member of our team, your primary role will be to build robust systems that manage and analyze millions of contracts efficiently. Your responsibilities include:• Developing systems capable of processing large volumes of contracts with reliability• Crafting data pipelines that orchestrate LLMs, data extraction, and clustering algorithms at scale• Building the industry’s most accurate search and retrieval systems• Collaborating with legal professionals and product teams to adapt to the rapid evolution of LLM technology Why Join Us?Every major corporation has an in-house legal team, and many of these dedicated professionals are overwhelmed with long hours and tight deadlines. Our mission at Ivo is to empower these lawyers by providing them with innovative solutions that reclaim their time and sanity. We are developing an AI-native platform dedicated to automating the monotonous tasks in legal work. Our products are loved by users, boasting an impressive 85% trial win rate amidst fierce competition. Join us in making a difference!

P-150 At Databricks, we are dedicated to empowering data teams to tackle some of the world's most challenging problems, ranging from security threat detection to the development of cancer treatments. We achieve this by creating and managing the leading data and AI infrastructure platform, allowing our clients to concentrate on the high-value challenges central to their missions. Founded in 2013 by the original creators of Apache Spark™, Databricks has evolved from a modest office in Berkeley, California, to a global enterprise with over 1000 employees. Our platform is trusted by thousands of organizations, from startups to Fortune 100 companies, establishing us as one of the fastest-growing SaaS firms worldwide. Our engineering teams design and develop highly technical products that meet significant real-world needs. We continually push the limits of data and AI technology while maintaining the resilience, security, and scalability essential for our customers' success on our platform. We operate one of the largest-scale software platforms, comprising millions of virtual machines that generate terabytes of logs and process exabytes of data daily. Given our scale, we frequently encounter cloud hardware, network, and operating system faults, and our software must effectively shield our customers from any disruptions. As a Software Engineer focused on backend development, you will collaborate closely with your team and product management to prioritize, design, implement, test, and operate microservices for the Databricks platform and products. This role includes writing software in Scala/Java, building data pipelines using Apache Spark™ and Apache Kafka, integrating with third-party applications, and interacting with cloud APIs such as AWS, Azure, CloudFormation, and Terraform. Below are examples of teams you can join: Data Science and Machine Learning Infrastructure: Develop services and infrastructure that bridge the gap between machine learning and distributed systems. Our technology supports flagship collaborative workspaces, notebooks, IDE integrations, and project management tools. We also facilitate large-scale machine learning through environment management, distributed training, and lifecycle management via MLflow. Compute Fabric: Construct the resource management infrastructure that supports all big data and machine learning workloads on the Databricks platform in a robust, flexible, secure, and cloud-agnostic manner. This software oversees millions of virtual machines.

About WorkWhileAt WorkWhile, we are dedicated to empowering workers to achieve better livelihoods and enhance their quality of life. Over 80 million Americans are employed in hourly positions, often facing inconsistent schedules and minimal wages that contribute to financial uncertainty.We are transforming the landscape of frontline work by fostering a more adaptive and productive labor market. Leveraging artificial intelligence, the WorkWhile platform provides businesses with immediate access to top-tier talent. Our workers enjoy benefits such as same-day pay, complimentary telehealth services, skill development opportunities, and the flexibility to select shifts that suit their expertise and availability.Our ambitious vision aims to align incentives and address inefficiencies within the labor market, challenging the $650 billion staffing and recruiting sector. Supported by Khosla Ventures and recognized by Inc. 5000 for remarkable growth, WorkWhile is redefining the future of work.

About TybaTyba is an innovative modeling platform designed specifically for energy companies focused on developing, financing, and managing renewable energy infrastructure. Our platform empowers energy companies to leverage technical models that are crucial for making informed infrastructure decisions.Our mission is to democratize access to state-of-the-art models across diverse teams within organizations, enabling them to construct and operate renewable energy projects more profitably. Supported by leading climate-focused and generalist venture capitalists, we collaborate with some of the most forward-thinking companies in the energy sector.The RoleWe are seeking a skilled software engineer to join our Asset Operations Backend team and contribute to the clean energy transition. In this pivotal role, you will operate at the nexus of data science support and robust backend systems, bringing advanced optimization and forecasting models to life while developing the scalable infrastructure behind our expanding portfolio of battery storage assets.Our auto-bidding platform integrates price forecasts and bid optimization algorithms to provide exceptional market returns for our clients. You will spearhead essential initiatives that deliver high-impact features, collaborating closely with cross-functional teams and delving deep into the complexities of power markets and their interconnected systems. This role is vital within our startup environment, where your contributions will directly accelerate the energy transition.Your responsibilities will include supporting our data science and optimization teams (utilizing specialized Python libraries like cvxpy and neuralforecast) as well as building resilient backend services and system architectures. You will play a key role in guiding our evolution from the current architecture to a more modular microservices framework across Python, Clojure, and Kotlin.Tyba’s Product SuiteTyba offers two primary products—Operations and Project Simulation:Operations: An auto-bidding platform driven by a proprietary neural network that recommends and implements operational strategies based on leading-edge price forecasts and optimization techniques. Our platform consistently delivers revenue outcomes ranking in the top 5% of ERCOT assets.Project Simulation: A flexible simulation platform that allows developers to model realistic financial and physical outcomes based on geographical location, market dynamics, and battery specifications.