Full Stack Developer (Contract to Hire) at 360IT Professionals | San Francisco

Join our dynamic team at 360IT Professionals as a Full Stack Developer. We are seeking a passionate individual who thrives in a collaborative environment and is eager to take on complex challenges. If you are proficient in both front-end and back-end technologies, and are looking for a stimulating role in San Francisco, we want to hear from you!

Join our dynamic team at 360itprofessionals as a Full Stack Developer, where you will be instrumental in designing and implementing innovative solutions. Your expertise in both front-end and back-end development will help us create robust applications that enhance user experience and drive business objectives.

About StackAIStackAI is a revolutionary no-code AI workflow platform that enables businesses to construct, implement, and expand AI-driven workflows without requiring extensive machine learning expertise. With a growing user base and increasing enterprise adoption, our goal is to democratize access to large language models (LLMs), empowering every business operator—beyond just developers. Supported by Y Combinator and top-tier investors, we are laying the groundwork for the AI-driven future of work.The RoleAs a Senior Full Stack Engineer, you will be instrumental in defining the product and technical architecture at StackAI. Your responsibilities will span the entire technology stack, from crafting scalable backend systems to creating stunning and user-friendly frontend interfaces, and incorporating advanced AI models into our platform. This role offers significant impact, as you will work closely with the founding team, take charge of essential product features, and shape the engineering culture of a rapidly evolving startup.We seek exceptional 10X engineers—innovative builders who can consistently deliver results in a dynamic environment, remain inquisitive, and excel in diverse roles.ResponsibilitiesIn this role, you will:Build and own the entire platform, from backend services and APIs to frontend interfaces.Create robust, scalable backend systems utilizing Python and FastAPI (or similar), with optimized databases (SQL/NoSQL).Design and maintain high-quality user interfaces using React, Next.js, TypeScript, and Tailwind CSS, ensuring polished, intuitive, and responsive user experiences.Integrate new AI models and features into our products for seamless performance and enhanced value.Manage StackAI’s landing and product pages to establish benchmarks for clarity, design, and quality.Collaborate across the stack to connect backend services with frontend applications seamlessly.Engage with design, product, and customers to refine product direction and prioritize user needs.Stay at the forefront of full-stack technologies, promoting best practices and innovative solutions.Assist with customer support as needed; every team member contributes to user satisfaction.

Join our dynamic team at gumloop as a Senior Full Stack Engineer, where you will play a pivotal role in shaping our technology landscape.Take ownership of end-to-end feature development: design, implement, test, deploy, and maintain your creations in production.Collaborate closely with users to swiftly transform feedback into actionable improvements, achieving results within hours, not days.Develop and manage scalable front-end and back-end solutions that maintain speed and reliability as user traffic increases.Contribute to the growth of the team by reviewing pull requests, providing context, and mentoring junior engineers.

At CreatorIQ, we are dedicated to revolutionizing creator-led growth, empowering over 1,300 global brands and agencies to thrive.Our mission is to humanize businesses while amplifying the impact of individuals. Guided by our core values—intentionality, excellence, collective journey, and humanity—we have been recognized as one of the best workplaces by various programs, including BuiltIn LA and NY. Our growth story includes being named one of the Fastest-Growing Companies in North America by Deloitte Technology Fast 500™ for four consecutive years, and being highlighted as a leader in IDC MarketScape: Worldwide Influencer Marketing Platforms for Large Enterprises in 2025, among others. Our flexible work model fosters collaboration and innovation, accommodating diverse working styles.Join us in our exciting journey. Become a vital part of our dynamic team and help transform the industry!Senior Full Stack Engineer, Creator RecruitWe are looking for a talented Senior Full Stack Engineer to enhance our Creator Tools team. Your contributions will significantly improve user experiences and help us develop scalable solutions for our expanding platform.The ideal candidate will possess a strong background in frontend frameworks, solid backend development skills, and a collaborative spirit suited for a fast-paced environment. You should be ready to take ownership of features, contribute to architectural decisions, and maintain high coding standards.The Creator Tools team is responsible for developing all user-facing features on our platform, directly impacting the lives and livelihoods of creators who utilize our tools to earn and sustain their businesses.From payment processing and social authentication to e-commerce solutions and campaign workflows, we enable the full creator experience. Every feature you develop and enhancement you implement is integral to delivering a seamless, intuitive platform that empowers creators to grow and earn with confidence.This role allows you to make an immediate and meaningful difference in the lives of creators who rely on our platform to pursue their passions.

Join Campfire as a Full Stack Engineer and play a pivotal role in transforming the accounting software industry. Based at our San Francisco headquarters, this in-office position invites you to collaborate closely with our talented team five days a week. About CampfireAt Campfire, we are driven by our mission to revolutionize accounting software, offering innovative solutions to startups and mid-sized tech companies. As proud graduates of Y Combinator's Summer 2023 cohort, we have secured support from esteemed investors like Foundation Capital and are witnessing rapid growth in our customer base.Your Role As a key member of our engineering team, you will be instrumental in designing and building our mission-critical software that enhances customer experiences. What We’re Looking ForWe seek an individual who: Possesses a strong foundation in Python, NextJS/React, and Tailwind.Thrives in a fast-paced, agile environment with minimal structure.Values autonomy, is self-motivated, and can effectively lead projects to completion. Ideal CandidateYou're driven not just by the prospect of a job, but by the desire to tackle challenges head-on. You're passionate about developing user-centric solutions and eager to collaborate, learn, and grow within a dynamic startup culture. How to ConnectIf you believe you’re the right fit, we want to hear from you! Share your journey with us and let’s discuss how you can contribute to igniting change at Campfire.‍ BenefitsWe offer exceptional benefits including 100% premium coverage for employees and 80% for dependents, along with comprehensive healthcare and dental options.

About the RoleJoin us as a Full Stack Engineer at nash, where you will be instrumental in crafting, enhancing, and scaling our innovative product offerings. Collaborate closely with our CTO, co-founder, and dedicated engineering and product teams to spearhead the development of new features across our technology stack, elevating both the user experience on the frontend and the robustness of our backend systems. This is a unique opportunity to be part of nash during a pivotal growth phase, as we create solutions for enterprises and small to medium businesses across the logistics value chain.Key ResponsibilitiesDesign, develop, and manage scalable web applications throughout the entire stack.Create and optimize responsive and high-performance user interfaces.Build and maintain backend services and APIs that fuel our platform.Collaborate with product, design, and engineering teams to quickly build, test, and iterate on features within our existing platform.Diagnose and resolve production issues across our systems, ensuring reliability and performance.Promote best practices in code quality, testing, and maintainability.Independently and collaboratively tackle complex technical challenges.QualificationsA minimum of 4 years of experience in building and deploying full-stack web applications.Proficient in React (or similar frontend frameworks) and Python.Experience with GraphQL, RESTful APIs, and database management (SQL and NoSQL).Strong grasp of modern frontend development principles, including TypeScript, React, component-driven architecture, and contemporary tooling.Familiarity with cloud platforms (AWS, GCP, or Azure) and best practices for deployment.A passion for delivering exceptional user experiences and developing scalable backend systems.Excellent problem-solving capabilities and the ability to work autonomously in a dynamic environment.Preference for candidates located in the Bay Area, as nash operates a hybrid-first product team with an office in San Francisco.Startup experience is a plus, but not mandatory.Bonus: Experience with Flask, SQLAlchemy, WebSockets, and integration-heavy systems.

Join Plaud as a Senior Full Stack Engineer and contribute to innovative software solutions that make a difference. This role offers the opportunity to work in a dynamic environment where you will collaborate with cross-functional teams to design, develop, and implement web applications.

Join our dynamic team at 360IT Professionals as a Senior Full Stack Developer. We are seeking a talented individual who thrives in a collaborative environment and is passionate about building scalable web applications. You will be responsible for both frontend and backend development, ensuring the seamless integration of technologies to deliver optimal user experiences.

At Siftstack, we are revolutionizing the development, testing, and operation of modern machines. Our innovative platform empowers engineers with real-time observability over high-frequency telemetry, effectively eliminating bottlenecks and facilitating faster, more dependable development.Founded by a team of experts from SpaceX, Google, and Palantir, Siftstack was inspired by our experience with pioneering projects like Dragon, Falcon, Starlink, and Starship. Our mission-critical infrastructure is designed for precision and scalability, meeting the highest demands of reliability in engineering.As an early-stage engineer at Siftstack, you will not only write code, but you will also play a pivotal role in defining our architecture, shaping our product, and cultivating a culture focused on addressing real engineering challenges. If you thrive on tackling complex technical problems and want to build foundational systems that support intricate machines, we'd love to hear from you.

Join us in revolutionizing the future of AI by shaping the narrative around document understanding.About the RoleWe are seeking an innovative Full-Stack Engineer dedicated to rapidly delivering AI products. If you thrive in a dynamic environment and are ready to take on diverse challenges, this role is for you. You will be responsible for developing our SaaS platform using Next.js and Python, contributing to open-source frameworks, and collaborating closely with customers to transform visionary ideas into tangible solutions. If you have experience launching AI applications that engage real users and can swiftly transition from concept to execution, we would love to connect.ResponsibilitiesLead front-end and full-stack development for our managed applications and SaaS offerings.Front-end technologies: Next.js, shadcn, react-query, etc.Back-end technologies: Python, Node.js, Kubernetes, Docker, Terraform, cloud services, databases, etc.Develop and maintain features for our open-source frameworks using Python and TypeScript.Collaborate with clients to create proof-of-concept and production-ready solutions.QualificationsMinimum 2 years of experience in full-stack development.Proven track record of launching web applications or new product features from the ground up, successfully moving from prototype to production.Experience in deploying AI/LLM-native applications, encompassing both user experience and core algorithm development.Rapidly iterate on solutions based on customer feedback, driving feature development and engaging in proactive user discovery.Experience in cross-functional teamwork, exemplifying the ability to take on product management responsibilities to scope and design features effectively.Demonstrated ability to scale applications to millions of users.Preferred: Background in machine learning and natural language processing.LocationWe foster a hybrid-friendly culture with our primary operations based in downtown San Francisco.Why Join Us?Meaningful Impact: Contribute to cutting-edge AI products that transform knowledge accessibility.Supportive Environment: Collaborate with a team of dedicated professionals who are passionate about innovation.

Join our dynamic team at Plaud as a Full Stack Engineer, where you will play a crucial role in designing and developing innovative web applications. We are looking for a talented engineer who is passionate about technology and eager to solve complex problems in a collaborative environment.

Join Usul as a Full Stack EngineerAt Usul, we are on a mission to revolutionize government procurement, creating the "Amazon for Government" where companies can seamlessly connect with government agencies across various sectors, including national security, space exploration, energy, and healthcare.Our cutting-edge AI platform empowers businesses to discover and secure government contracts more efficiently, while simplifying the purchasing process for government entities. In just one year, we've achieved over $5 million in annual recurring revenue, partnering with Fortune 500 contractors and esteemed organizations like the U.S. government and NATO.As we embark on our next growth phase, we are eager to expand our reach across the U.S. market and into over 60 allied nations. To achieve this, we are assembling a small, elite team that values high standards, collaboration, and a fun work environment. Our youthful team stands out at defense conferences, infusing Silicon Valley energy and innovation into a traditionally conservative industry.In your role as a Full Stack Engineer, you will develop pipelines to transform an overwhelming volume of daily contract data into actionable insights, enabling businesses of all sizes to secure contracts and helping governments identify the best solutions swiftly.

Join Our Mission at HotplateAt Hotplate, we empower aspiring food entrepreneurs to launch and grow their local food businesses without the need for a traditional brick-and-mortar establishment.The conventional restaurant model has significant barriers; it often demands over six figures in startup costs and incurs high ongoing expenses. Alarmingly, two-thirds of restaurants and bakeries close within their first year.A new wave of culinary entrepreneurs is emerging, with chefs and bakers now operating from home kitchens, shared commissaries, or mobile setups. They harness the power of social media, particularly Instagram, and largely rely on pre-order models. This innovative approach yields profit margins between 50-80%, significantly surpassing the typical 5% margin associated with traditional restaurants.Unfortunately, existing e-commerce solutions are ill-suited for food sales. Without Hotplate, culinary entrepreneurs struggle with a mix of DMs, Google Forms, Square, and Shopify. This diversion of focus from business growth to logistics hampers their success.We proudly support top pop-ups recognized by leading publications like the New York Times, Infatuation, and Eater, reaching over 5,000 businesses and disbursing $80M on our platform. Yet, this is just the beginning of our journey.By creating essential tools for this next generation of food entrepreneurs, we aim to transform the food industry, enhance its diversity, and improve accessibility, allowing anyone with a passion for food to start their own venture.To learn more about whether Hotplate aligns with your values, explore our perspectives on hiring, fundraising, and our core values.Your Role as a Full Stack EngineerIn this position, you'll develop comprehensive features that significantly enhance the operational efficiency of numerous chefs and bakers. Your work will span a diverse range of responsibilities, from designing scalable systems and infrastructure to creating chef-centric features that empower our users to thrive.

Position OverviewBobyard is experiencing rapid growth and we are in need of talented engineers to help us build new features while scaling our existing infrastructure to meet increasing demand.In this role, you'll enjoy significant autonomy in the design, execution, and iteration of our products. As a startup, we prioritize speed and innovation. You will become a leading expert on the products you develop. We seek exceptional engineers who possess a strong vision for our products and the capability to produce outstanding code.

Join Coderabbit as a Full Stack Engineer and be at the forefront of technological innovation. As a key member of our development team, you will design, develop, and maintain web applications that enhance user experience and drive business success.

Why Choose Alex?At Alex, one of the most promising startups emerging from our Y Combinator batch, we are making significant strides in the hiring landscape. We have secured strong funding, are generating revenue, and have ample runway to fuel our growth.Our innovative AI-driven recruitment tool revolutionizes the job interview process, enabling companies to obtain critical hiring insights more swiftly and effectively than ever. Our clients are enthusiastic about our product, and we are just beginning our journey.Who We Are?We are a team of individuals who:Thrive on tackling complex engineering challengesAdapt quickly and are committed to achieving resultsDedicate ourselves to hard workAct with urgencyValue in-person collaboration in our San Francisco office, five days a weekTechnologies We UtilizeWe prefer candidates with experience in:JavaScript (Typescript, React, Node, Next)PythonCloud and DevOps tools (Azure, Kubernetes, Docker)System ArchitectureYour ResponsibilitiesAt Alex, we operate similarly to a marketplace, providing unique interview experiences for candidates and a robust data analysis platform for employers. As a hands-on engineer, you will develop both consumer-facing applications and enterprise-grade software, with ample opportunities for professional growth. Potential consumer software challenges include:How can we reduce average interviewer response latency to 200ms?How can we refine our models to minimize hallucinations and help Alex pass the Turing test?How will our system architecture evolve as we scale to accommodate thousands of users concurrently?You will also address enterprise-related software challenges such as:How do we integrate with our clients' internal hiring systems?What is the optimal way to visually present interview results swiftly?How can Alex facilitate end-to-end coordination of the hiring process?And a myriad of feature requests awaiting your expertise!

About Numeral:Numeral is revolutionizing the tax landscape for digital businesses, helping them navigate the complexities of regulations across 47 states and over 50 countries. Our mission is to lift this burden so that teams can concentrate on their primary objectives.As the largest and fastest-growing AI-driven tax solution, Numeral was established in 2023 and has successfully raised over $57 million from notable investors such as Benchmark, Mayfield, and Y-Combinator. We proudly serve more than 2,500 paying customers and have consistently tripled our revenue year over year since our inception.While our main hiring hubs are in San Francisco and New York, we do offer remote opportunities based on specific circumstances.About the Role:We are in search of a foundational Full-Stack Engineer who thrives in dynamic environments, enjoys constructing intricate distributed systems, and is eager to establish core architecture within a rapidly expanding early-stage startup. You will spearhead the design and implementation of APIs, services, and infrastructure that form the backbone of our platform. Additionally, you will collaborate with leadership to drive engineering strategy, product execution, and cultural development.Your Responsibilities:Design and develop scalable and secure backend services and APIs from the ground up.Make architectural choices that prioritize speed, data integrity, and long-term sustainability.Work closely with product, design, and data teams to create efficient systems that enhance crucial customer workflows.Take ownership of infrastructure, observability, and performance for the services you create.Contribute to the establishment of engineering best practices, code quality, and a robust backend culture.What You Bring:Over 7 years of experience in developing backend systems in high-growth settings.Proficiency in backend technologies such as Node.js, PostgreSQL, Redis, and cloud services (AWS preferred).Experience in designing resilient APIs and distributed systems at scale.A strong product sensibility with the ability to balance performance, flexibility, and speed.A startup mindset: comfortable with ambiguity and eager for swift growth.Intensity & Ownership: This role goes beyond a standard 9-5 — we are rapidly scaling and face exciting opportunities ahead.Customer Obsession: A genuine commitment to enhancing user experience and resolving their challenges.

Join us as we create a revolutionary gamified developer platform that enables thousands of developers to engage in thrilling software engineering challenges that explore the limits of LLMs.As a Full Stack Software Engineer, you will integrate into a dynamic, enthusiastic team focused on tackling complex technical issues, crafting captivating gamification experiences, and establishing robust systems that facilitate collaboration among developers worldwide.Key ResponsibilitiesDevelop and sustain comprehensive features across both frontend and backend systems.Design scalable, high-performance backend services and user-friendly, responsive frontend interfaces to enable real-time coding competitions and engaging user experiences.Work closely with product managers, designers, and engineers throughout the stack to swiftly deliver impactful features.Lead technical discussions, influence architectural decisions, and identify areas for enhancement across the entire technology stack.Establish engineering best practices that include code quality, testing protocols, observability, and thorough documentation.QualificationsMinimum of 3 years of experience developing scalable, high-performance full stack applications in production settings.Proficient in creating frontends with React, TypeScript, and Tailwind CSS.Experience in designing secure and efficient APIs and backend services using Go.Familiar with cloud infrastructure and services (AWS) and Docker.Possess a proactive approach, comfortable with rapid iteration based on user feedback.Preferred QualificationsExperience with Infrastructure as Code (IaaC) using Terraform and CI/CD pipelines.Background in designing secure code execution environments and implementing sandboxing techniques.Interest in or experience with gamification, competitive programming, or developer-centric platforms.