Staff Fullstack Engineer

Complete is dedicated to transforming compensation into a strategic advantage for the most impactful companies globally. We're revolutionizing compensation processes by moving away from outdated spreadsheets to modern, efficient systems. Our solutions encompass comprehensive compensation cycle planning, leveling, total rewards statements for employees, and interactive candidate offers, among other features!Why Join Us at Complete?We understand that effective compensation strategies are vital to a company's success and represent one of its largest expenditures. Many enterprises struggle to develop and implement a solid compensation strategy, which can lead to significant financial and operational inefficiencies. We believe that innovative compensation approaches are the key to sustainable success.Complete is proudly supported by Accel and Y Combinator, and we are fortunate to have esteemed advisors like Will Larson (CTO of Carta), Eric Sagar (COO of Plaid), and Mathilde Collin (CEO of Front).About Our Team We are passionate builders focused on delivering quality. We believe that 21st-century software should be intuitive and require minimal training. Our culture is characterized by low ego and rapid execution. Success doesn't come from large teams but from focused efforts. Our tight-knit team of fewer than 10 people combines exceptional product and business expertise, allowing us to compete effectively in the market. This is your opportunity to join us at a pivotal moment!⭐ Our clientele ranges from innovative startups like Linear and Brex to established public companies like Roblox, and we are continually adding remarkable names to our roster. We thrive in a collaborative environment at our San Francisco office, located near Embarcadero BART, where we work together in person 4-5 days a week. We believe that bringing top talent together in a creative space is the fastest route to success.Your RoleAt this exciting juncture, we are seeking Senior or Staff Engineers to help us scale towards $XXM+ in ARR. Ideal candidates are those who are proactive, enjoy working with urgency, and have a strong focus on customer outcomes. You will have the opportunity to make significant contributions in three key areas:Ownership: We are looking for experienced individuals who can take charge of projects and drive them to successful completion.

About WorkWhileWorkWhile is dedicated to transforming the way hourly workers earn a living and improve their quality of life. With over 80 million Americans in hourly jobs facing unpredictable schedules, low wages, and limited benefits, we aim to provide financial stability through innovation.Our mission is to revolutionize frontline work by fostering a more flexible and efficient labor market. Utilizing AI technology, our platform enables businesses to swiftly connect with top-tier talent while offering workers same-day pay, complimentary telehealth services, opportunities for skill enhancement, and the freedom to select shifts that suit their skills and availability.With an ambitious goal to align incentives and address inefficiencies in the labor market, we are disrupting the $650 billion staffing and recruiting sector. Supported by Khosla Ventures and recognized by the Inc. 5000 for our remarkable growth, WorkWhile is reimagining the future of work.

Join cleara as a Fullstack Engineer, where you will play a pivotal role in developing and optimizing our software solutions. You will collaborate with cross-functional teams to deliver high-quality applications that meet the needs of our clients.

Role Overview Sigma Computing builds a high-performance data platform designed to make analytics accessible and useful for a wide range of users. The engineering team is growing, and Sigma is looking for a Fullstack Staff Software Engineer in San Francisco, CA. This role focuses on solving technical challenges across the stack and shaping features that help businesses work with data more easily. What You Will Do Tackle complex engineering problems to deliver fast, interactive analytics and workflow applications on top of modern data warehouses. Develop software using tools and languages such as Rust, Go, GraphQL, and Typescript. Create new algorithms and techniques to improve performance and interactivity for analytics used by large enterprises. Investigate, debug, and resolve product or system issues by identifying root causes. Design and build new software features to support a rapidly increasing user base. Work closely with teams across infrastructure, design, product, customer support, sales, and marketing to deliver new product capabilities.

Engineering at Ivo At Ivo, our engineers are the architects of innovation. We pride ourselves on being pioneers in the tech industry, having delivered:An AI agent that integrates seamlessly with MS Word to assist in document editing [2023]A revolutionary approach to embedding models with agentic RAG [2023]Large-scale LLM-based legal fact extraction solutions [2024]A cutting-edge legal assistant capable of efficiently searching extensive contract databases without compromising accuracy [2024]Innovative clustering of legal documents from the same family [2025]Advanced automatic deviation analysis to uncover hidden risks in massive contract databases [2025]The ability to merge contracts with their amendments to create a comprehensive timeline of 'composite' contracts, bringing tears of joy to our clients [2025] RoleAs a Staff Software Engineer at Ivo, you will design, develop, and deploy advanced generative AI products. Your responsibilities will include:Creating comprehensive full-stack generative AI functionalitiesDelivering high-performance UI code and backend systems capable of processing and analyzing millions of contracts efficientlyDesigning intricate pipelines to orchestrate LLMs, data extraction, and clustering algorithms at scaleCollaborating with designers, legal experts, and fellow engineers to reinvent legal workflows in the AI era MissionIn today's fast-paced business environment, in-house legal teams are often overwhelmed, facing long hours and tight deadlines. Our mission at Ivo is to empower these lawyers by leveraging LLMs to reclaim their time. We are building an AI-native platform that automates tedious legal tasks, significantly improving the lives of legal professionals. Despite fierce competition, our software boasts the highest trial win rate in the industry at 85%. We are making a genuine impact, and this is just the beginning.

Senior Staff Software Engineer Location: Hybrid - Palo Alto Office on Tuesdays and Thursdays Make a Meaningful Impact At Midi Health, we're on a mission to transform women's healthcare. We are seeking a dynamic Senior Staff Fullstack Engineer who will act as a technical cornerstone within our Engineering Organization. As we expand, you will play a crucial role by translating intricate insights into cohesive technical blueprints and innovative products that drive our vision forward. Your Responsibilities Diagnose intricate technical challenges and spearhead architectural evaluations across diverse teams to mitigate technical debt, establish cross-service frameworks, and secure the long-term viability of Midi’s healthcare infrastructure. Function as a 'part-time product manager for technology', championing essential infrastructure enhancements that foster future operational agility. Design and develop outstanding, scalable, and adaptable products and code, striking a balance between execution speed and scalability. Influence engineering culture positively by promoting best practices for automated testing, CI/CD, and maintaining high-quality code across the entire stack. Assess high-level technical and business issues, architecting elegant and flexible solutions that consider long-term scalability and business expansion. Collaborate with Executive Leadership, Product, Marketing, and Clinical Stakeholders to uncover unmet customer and operational needs, translating business objectives into technical strategies that yield results for our patients and clinicians. Mentor senior and junior engineers through formal and informal channels, nurturing an environment of curiosity, humility, and technical excellence. About You You bring over 8 years of experience in building and scaling intricate engineering solutions, with a demonstrable history of leading large-scale architectural migrations in a startup setting. You have proven expertise in Django/DRF and React/Next.js. You are adept at navigating high-level abstractions, converting vague product and growth aspirations into tangible technical roadmaps. Your diverse background includes creating consumer-facing products alongside deep proficiency in architecting complex operational and workflow management systems. You are an advanced user of agentic coding tools and LLMs (e.g., Claude Code, GitHub Copilot) to expedite development and guide the team on high-leverage prompting and code auditing strategies.

About Ivo Inc. Ivo Inc. builds generative AI technology for the legal sector. Based in San Francisco, the team focuses on practical solutions that help legal professionals work more efficiently. The company’s platform automates and streamlines contract analysis, document editing, and risk detection for in-house legal teams. Recent Engineering Projects AI agents that integrate with MS Word for automated document editing (2023) Shifting from generic embeddings to agentic RAG for better accuracy (2023) Large-scale LLM-based legal fact extraction (2024) Legal assistant for searching large contract databases with high precision (2024) Clustering legal documents from the same source for improved organization (2025) Automatic deviation analysis to surface hidden risks in contract archives (2025) System for merging contracts and amendments into unified composite contracts (2025) Role Overview: Staff Software Engineer - Fullstack This role focuses on designing and building full-stack features using generative AI. Staff Engineers at Ivo work across the stack and partner closely with product, design, and legal experts. What You Will Do Design and implement full-stack generative AI features Build high-performance user interfaces and backend systems that process millions of legal contracts Create and maintain data pipelines that coordinate LLMs, data extraction, and clustering at scale Work with designers, legal professionals, and engineers to improve legal workflows with AI Our Mission Ivo’s goal is to help in-house legal teams reclaim time from repetitive work. The team uses advanced LLMs to automate tedious legal tasks, so lawyers can focus on higher-value work. The platform’s impact is clear: Ivo holds an 85% trial win rate, the highest in the market, and receives consistently positive user feedback.

About Nooks.ai:Nooks is revolutionizing the sales landscape with its AI Sales Assistant Platform (ASAP) that streamlines the routine tasks, enabling sales representatives to concentrate on building relationships and closing deals. With our innovative technology, we've empowered thousands of sales professionals to exceed their quotas, saving clients hundreds of thousands of hours while generating significant sales pipelines. Trusted by renowned sales teams at industry leaders like Hubspot, Rippling, and Toast, Nooks has established itself as a vital tool in the sales tech ecosystem.We are a high-achieving team that has successfully secured over $70M in funding from prominent venture capitalists, including Kleiner Perkins, marking their first investment in sales technology in a decade. Our remarkable growth trajectory includes quadrupling our Annual Recurring Revenue (ARR) in the last two years, and we aim to triple it again this year.To learn more, please visit Nooks.ai.About the Role:We are seeking an exceptional Senior Engineer to join our dynamic engineering team. In this pivotal role, you will be at the forefront of leveraging large language models (LLMs) and AI agents to redefine outbound sales strategies and drive pipeline generation. You will have the unique opportunity to enhance our existing products and develop new solutions in collaboration with our clients. As a senior team member, you will work alongside engineering leadership to influence our technical and product vision. If you thrive in a fast-paced environment and are excited about shaping a groundbreaking sales product, we would love to connect with you.Responsibilities:Develop and maintain robust, scalable applications across the entire technology stack.Lead the architecture and implementation of new features for our core platform.Collaborate with product managers, designers, and other engineering teams to create impactful solutions.Design and build frontend components using React and TypeScript.Develop backend services and APIs with Node.js and Python.Provide mentorship to junior engineers, guiding them on best practices, coding standards, and architecture.Oversee the complete delivery of features from ideation through to production.Continuously enhance application performance, scalability, and reliability.Contribute to the establishment of our technical roadmap and set standards for engineering excellence.

Join the Innovative Team at Nooks.ai:Nooks is revolutionizing the sales landscape with our cutting-edge AI Sales Assistant Platform (ASAP). By automating repetitive tasks, we empower sales representatives to focus on building relationships and closing deals, leading to increased sales pipelines. Our platform has enabled countless sales professionals to meet their targets, saving our clients hundreds of thousands of hours and generating substantial revenue. We take pride in being the preferred choice for sales teams at industry leaders like Hubspot, Rippling, and Toast, among many others.With over $70M raised from prestigious VCs such as Kleiner Perkins, we are on an impressive growth trajectory, having quadrupled our Annual Recurring Revenue (ARR) in the last two years and aiming for another tripling this year.Discover more about us at Nooks.ai.About the Position:We are seeking a talented Software Engineer to enhance our Core Dialer team. Your mission will be to elevate the user experience of our dialer functionalities—including dialing, task management, configuration settings, connected views, smart lists, and browser extensions—ensuring our sales tools are fast and reliable.Your Responsibilities:Develop and maintain essential dialer features that sales representatives use daily.Collaborate with design and product teams to implement user experience enhancements with meticulous attention to detail.Optimize backend APIs and frontend performance to minimize latency and streamline complex processes.Work cross-functionally with Integrations and Voice Infrastructure teams to ensure seamless operations.Take ownership of enhancing the dialer experience systems.Gain valuable experience with distributed systems and integrations.We Are Looking For Candidates Who Have:3 to 5 years of engineering experience, preferably in SaaS applications.Proficiency in modern frontend technologies (React) and backend development (Node/TypeScript, REST APIs).A solid understanding of data modeling and caching solutions (Postgres, Redis).A passion for working closely with users and rapidly iterating on features.At Nooks, we offer competitive compensation packages that include base salary, equity, and comprehensive benefits. Join us in shaping the future of sales technology!

Join Pinterest as a Senior Fullstack Software Engineer and be a key player in building and enhancing our platform. You will work on both the front-end and back-end of our applications, helping to create seamless user experiences that inspire creativity. This role requires a passion for technology and a strong understanding of software engineering principles.

About FormalAt Formal, we are revolutionizing data security with our cutting-edge platform designed to empower teams to effortlessly understand and manage their data.We are developing an advanced protocol-aware reverse-proxy for data stores and APIs that enables organizations to gain real-time insights into their data. This innovative approach allows teams to monitor how sensitive data is stored, accessed, and utilized, thereby enforcing strict least privilege policies through techniques such as data masking, filtering, and anonymization.Our solutions have earned the trust of industry leaders like Ramp, Gusto, and Notion, who rely on us for data security, compliance, data quality management, and infrastructure access.Backed by top-tier venture capital firms, including Thrive Capital and Y Combinator, we also enjoy the support of angel investors who are executives and founders from renowned companies like Datadog, Clickhouse, Plaid, and Vanta.About the RoleFormal is committed to assembling an exceptional engineering team, and we seek passionate individuals who are eager to make a significant impact on our product and company growth.The ideal candidate possesses a profound knowledge of building scalable systems, a strong sense of ownership, and thrives on overseeing projects from their inception to full-scale production.Our current technology stack includes Typescript, NextJS, Shadcn, Vercel, and Golang.Your ResponsibilitiesDrive continuous improvements in the performance and reliability of our frontend application through code optimization and enhancement identification.Elevate existing features by integrating user feedback and executing enhancements to usability and design.Assume ownership of the frontend architecture, ensuring it is scalable, maintainable, and aligned with industry best practices.Lead initiatives that you believe will significantly impact Formal's success.Key QualificationsDemonstrated experience in software development for data-intensive platforms.Strong proficiency in modern frameworks (e.g., React, Vue.js) and backend languages (we utilize Go). Familiarity with streaming data processing frameworks like Apache Kafka and Google Pub/Sub.Experience with essential infrastructure components such as Kubernetes.

P-160 About Us At Databricks, we are dedicated to empowering data teams to tackle some of the most challenging problems in the world — from transforming the next mode of transportation into a reality to expediting the development of medical innovations. We achieve this by developing and operating the leading Data Intelligence Platform, enabling our customers to leverage profound data insights that enhance their operations. Founded by engineers with a customer-centric approach, we eagerly embrace every opportunity to confront technical challenges, whether it involves designing next-generation UI/UX interfaces for data interaction or scaling our services and infrastructure across millions of virtual machines. Our journey is just beginning. As a Senior Full Stack Software Engineer, you will collaborate with your team and product management to simplify data insights for our users. We seek engineers who are customer-focused and capable of overseeing the entire product lifecycle, extending beyond mere technical execution. You will lay the groundwork for creating robust, scalable, and delightful products. Below are examples of experiences you will design for our customers, facilitating the complete project lifecycle from data loading and results visualization to statistical model creation and production deployment: User-friendly workflows for creating, configuring, and managing large-scale compute clusters, networks, and data sources. Develop, deploy, test, and upgrade intricate data pipelines, featuring powerful visual data graphs. Streamlined onboarding and management for all organizational members to adopt a data-driven approach. Exceptional SQL-centric data exploration and dashboarding experience on Databricks. An interactive environment for collaborative data projects at scale, with a straightforward path to production.

Join Mercor: Pioneering AI and Labor Market IntegrationAt Mercor, we operate at the forefront of labor markets and artificial intelligence (AI) research. Collaborating with esteemed AI laboratories and businesses, we deliver the invaluable human intelligence needed for AI evolution.Our extensive network of talent trains cutting-edge AI models, similar to the way educators guide students—by imparting insights, experience, and context that coding alone cannot convey. Currently, over 30,000 experts in our network collectively generate more than $2 million daily.Mercor is pioneering a new realm of work where expertise accelerates AI progress. To realize this vision, we seek an ambitious, dynamic, and dedicated team. You’ll collaborate with researchers, operators, and AI enterprises that are redefining societal systems.As a profitable Series C company valued at $10 billion, we maintain a five-day in-person work schedule at our new San Francisco headquarters.Your RoleWe are on the lookout for a product-focused Fullstack Software Engineer with robust technical expertise and a keen sense for product design. This position is perfect for individuals who relish taking ownership of user-facing features from conception to deployment, while possessing a deep understanding of the business and market dynamics that underpin their creations.In this role, you will enhance core marketplace interfaces that influence how engineers discover Mercor, apply for opportunities, complete assessments, and ultimately earn income. Achieving success here requires sound judgment, comfort with ambiguity, and the knack for delivering high-quality experiences swiftly without unnecessary complexity.This is not a limited backend or frontend role; your responsibilities will span:Frontend: React / Next.js, user journeys, UX nuances, performance, and refinement.Backend: Python and Go services, APIs, data structures, and integrations.Data: MongoDB and SQL, metrics, funnel analysis, and operational integrity.By the end of the process, you will be matched with a team where you can make the greatest impact in one of the following areas:Talent Platform Side – Developing next-gen tools that automate end-to-end recruitment, intelligently connect candidates to roles, and facilitate global hiring with seamless contracts and payments.Applied AI/Human Data Side – Collaborating with top-tier AI researchers from leading labs like OpenAI, Anthropic, and Google to create post-training datasets that enhance foundational model capabilities.

About EventualAt Eventual, we recognize that every revolutionary AI application, whether it’s foundational models or autonomous vehicles, depends on the ability to process vast amounts of images, videos, and intricate data. Unfortunately, current data platforms like Databricks and Snowflake are optimized for spreadsheet-like analytics and not for the petabytes of multimodal data essential for AI. This leads to teams squandering months on fragile infrastructure instead of focusing on research and product development.Founded in 2022, our mission is to transform the way data is queried—whether it’s images, video, audio, or text—making it as straightforward as working with tables, while ensuring scalability for production workloads. Our open-source engine, Daft, is meticulously engineered for real-world AI systems, coordinating with external APIs, managing GPU clusters, and effectively handling failures that traditional engines cannot. Daft is already powering critical workloads at leading companies like Amazon, Mobileye, Together AI, and CloudKitchens.We have built a world-class team drawn from industry giants such as Databricks, AWS, Nvidia, Pinecone, GitHub Copilot, and Tesla, and we’ve quadrupled in size within just one year. Backed by Series A and seed funding from investors including Felicis, CRV, Microsoft M12, Citi, Essence, Y Combinator, Caffeinated Capital, and Array.vc, we’re now looking to double our team. Join us at Eventual as we embark on this exciting journey!We're seeking passionate individuals eager to collaborate in a close-knit team environment, working together four days a week at our Mission District office in San Francisco.

At Plaid, we envision a future where financial interactions are seamless and empowering. Our mission is to revolutionize how individuals manage their finances through innovative tools and experiences utilized by thousands of developers. We support millions in achieving healthier financial lives by enabling connections to their financial accounts through the apps they love. Collaborating with leading companies such as Venmo, SoFi, and many Fortune 500 firms, our network encompasses over 12,000 financial institutions across the U.S., Canada, the UK, and Europe. Established in 2013, our headquarters is in San Francisco, with additional offices in New York, Washington D.C., London, and Amsterdam.As a Senior Fullstack Software Engineer at Plaid, you will play a pivotal role in shaping the future of financial access. You will design and develop robust systems and engaging user experiences that facilitate millions of connections to their finances. Your expertise will span the entire technology stack, allowing you to create scalable backend services and APIs while also delivering intuitive frontend experiences that bring our solutions to life.This position is perfect for engineers who thrive on alternating between backend problem-solving and frontend design, and who are eager to amplify their influence across both domains. You will work collaboratively with product managers, designers, and fellow engineers to deliver reliable, secure, and user-friendly products. At Plaid, you will take ownership early, contribute to key architectural decisions, and witness your contributions impacting millions of users.

Postman Inc. seeks a Senior Fullstack Software Engineer in San Francisco, California, to help advance the future of API collaboration. This role involves working across both front-end and back-end systems, with a focus on building reliable, scalable solutions that support the company’s platform. Responsibilities Design and develop features across the full technology stack, from user interfaces to backend services Collaborate with cross-functional teams to deliver improvements that enhance user experience and workflow efficiency Contribute to architectural decisions and drive ongoing improvements in software design Mentor junior engineers and support the growth of technical expertise within the team Requirements Proven experience building and maintaining fullstack applications Strong understanding of both front-end and back-end technologies Ability to work effectively with engineers, designers, and product managers Interest in shaping technical direction and contributing to team development

Role Overview Sigma Computing builds a high-performance platform that helps businesses work with modern data architectures. The engineering team is growing and looking for experienced fullstack engineers who enjoy solving complex problems and building solutions across the stack. The team’s mission: make data accessible for everyone. What You Will Do Work on challenging technical problems to deliver fast, interactive analytics and workflow experiences using modern data warehouses. Build software with tools and languages such as Rust, Go, GraphQL, and TypeScript. Design algorithms and techniques that improve performance and interactivity for analytics used by some of the world’s largest companies. Investigate and resolve product or system issues by identifying root causes. Develop and launch new features to support a growing base of users. Collaborate with teams across infrastructure, design, product, customer support, sales, and marketing to create new product capabilities. Location This position is based in San Francisco, CA.

About UsAt 3Y Health, we are pioneering AI-driven software solutions to empower healthcare providers and streamline the staggering administrative complexity that consumes 40% of the industry’s revenue. Our comprehensive platform unveils opportunities for clinician entrepreneurs, enabling medical professionals to successfully launch, operate, and expand private practices. By equipping these independent practices with cutting-edge AI and automation, we’re assisting providers in reclaiming their time, nurturing successful businesses, and delivering enhanced outcomes for their communities. Backed by over $200M from esteemed investors such as Founders Fund, General Catalyst, Softbank, and 8VC, we are on a mission to revolutionize healthcare.About the RoleWe are in search of a skilled Fullstack Engineer to help us develop intuitive and high-performance user interfaces that resonate with our providers. The ideal candidate will be a product-oriented engineer with extensive expertise in modern web technologies (React, TypeScript, Node) and a keen eye for design and user interaction excellence. You have a passion for writing clean, modular code and can collaborate effectively with design and product teams to bring beautiful experiences to fruition. Candidates with experience as a founding engineer or founder are especially desirable, as we value a strong sense of ownership, speed, and a commitment to continuous iteration.This position requires a dynamic individual capable of steering architectural decisions and collaborating cross-functionally with engineering, design, and product teams. As a Fullstack Engineer, you will play a key role in delivering scalable systems, collaborating on product development, and shaping the user experience of our practice management platform.ResponsibilitiesDevelop and maintain reusable, high-performing, and accessible frontend components utilizing React and TypeScript.Collaborate closely with designers to create stunning, user-focused experiences.Own the UX refinement and interaction quality; consistently seek opportunities to enhance usability.Partner with backend engineers to define API interfaces, and occasionally implement backend logic as necessary.Shape frontend architectural decisions and advocate for best practices in code modularity and maintainability.Engage in code reviews, technical discussions, and team rituals.Adopt a founder’s mindset—be proactive, product-focused, and eager to take ownership.

Flex is hiring a Senior Fullstack Software Engineer to join the Risk Engineering team. This position can be based in New York, San Francisco, or remote within the U.S. Role overview This role centers on designing, building, and maintaining applications that support Flex’s risk management efforts. The Senior Fullstack Software Engineer will collaborate closely with teammates to deliver solutions that improve how risk is assessed and managed across the company. What you will do Develop and maintain both frontend and backend components for risk-related applications Work with team members to design features and solve technical challenges Contribute to projects from initial planning through deployment Requirements Experience in both frontend and backend software development Ability to drive projects through the full development lifecycle Interest in building solutions that support risk management