Senior Back End Software Engineer

We are seeking a talented Back-End Web Developer to spearhead the management of data interchange between our server and users. Your main responsibilities will include developing robust server-side logic, defining and maintaining our central database, and ensuring high levels of performance and responsiveness to front-end requests. Additionally, you will collaborate closely with front-end developers to seamlessly integrate their elements into the application. A foundational understanding of front-end technologies is essential to excel in this role.

Join eproinc as a Back-End Database Developer where you'll play a critical role in designing, developing, and maintaining robust database systems. This is an exciting opportunity for a seasoned developer looking to leverage their expertise in a dynamic environment.In this position, you will collaborate with cross-functional teams to ensure data integrity, optimize performance, and contribute to innovative solutions that drive our business forward.

Back End Developer LeadSan Francisco, CAAt Rothy's, our mission is to revolutionize the fashion industry by prioritizing sustainability and ethical practices. We have successfully repurposed over 200 million single-use plastic bottles and 715,000 pounds of ocean-bound marine plastic into our signature thread, crafting wardrobe essentials that are as stylish as they are environmentally friendly.With a commitment to zero waste, we blend advanced 3D knitting technology with meticulous handcrafted assembly to produce machine-washable styles that do not sacrifice comfort. From iconic shoes to versatile bags, our products are designed for every adventure.At Rothy's, we are dedicated to building a sustainable future and believe in creating an inclusive workplace at our headquarters, retail locations, and wholly-owned factory, expanding our community every day.About the Team:Our Digital Experience team is the backbone of Rothy's, ensuring that all technological aspects run smoothly—both for our visually stunning website and internally by providing essential IT support across departments. As a fast-paced, modern organization, technology permeates our operations, and we rely on our talented team to keep everything functioning seamlessly.About the Role:We are seeking a strategic and seasoned Back End Developer Lead (Director level) to build, supervise, and expand our team of developers dedicated to supporting our Product (Merchandising, Allocation & Design), Production, Product Development, Supply Chain, and HR, Legal, and Finance functions. In this influential role, you will define the technical vision across these areas, mentor engineers, and collaborate closely with cross-functional leaders to deliver scalable, high-quality technology solutions. This opportunity is ideal for someone who excels in both hands-on and leadership roles, enjoys team building, solving intricate problems, and making a significant business impact in a dynamic environment.Your Responsibilities:Lead, develop, and mentor a team of developers focused on Product, Production, Product Development, Supply Chain, and corporate functions while fostering a culture of growth, accountability, and technical excellence.Define and implement the technical strategy, architecture, and best practices across systems that support product lifecycle management and business operations.Collaborate with cross-functional teams to ensure the delivery of high-quality technology solutions that drive business objectives.

Join DoorDash as a Front-End Web Developer specializing in B2B Marketing Technology. In this role, you will collaborate with a passionate team to design and implement innovative web solutions that enhance user experience and drive business growth. Your expertise in front-end technologies will help shape the future of our marketing tools and platforms.

Important NoticeThis is a full-time, on-site position located in San Francisco (Presidio), where you will work in our office five days a week.Candidates must be residents of the Bay Area or willing to relocate prior to starting.We require valid US work authorization, and we are open to sponsoring an O-1 visa for exceptional candidates.Role Overview: Senior Full Stack Engineer (Back-End)Your ResponsibilitiesIn this role, you will develop and deploy full-stack features from backend APIs to the user interfaces that enhance user interactions on a daily basis.As part of a small team of roughly 15, you will not only implement new features but also influence key architectural decisions that will support scaling our system to handle significantly increased loads.You will collaborate closely with our CTO on various initiatives, including:Establishing and managing sandbox environments for agent code execution, ensuring security, resource limits, and process isolation for thousands of concurrent sessions.Designing deployment and migration processes for a Cloudflare Workers and Fly.io architecture, incorporating blue-green deployments and canary testing.Implementing end-to-end instrumentation for real-time workloads, including SSE streaming and task queues.Delivering new backend features, tool integrations, and memory indexing, with immediate impact on real users.Minimizing operational overhead through effective logging, monitoring, and incident response tools tailored for our scale.Your innovative ideas!Technology StackWe leverage a range of technologies including TypeScript, Cloudflare Workers, Durable Objects, Hono, Drizzle ORM, Postgres, Zod, SST, Vercel AI SDK, Docker, React, and Vite.Candidate ProfileEssential QualificationsA minimum of 5 years of engineering experience developing and maintaining backend systems in a production environment, with on-call responsibilities.Proficient in TypeScript with a strong preference for backend development, while also being capable across the entire stack.

Join our dynamic team at Sonsoft Inc. as a J2EE Developer, where you will leverage your expertise in Java and Web Services to craft innovative solutions that drive our projects forward. You will be responsible for developing high-quality software, collaborating with cross-functional teams, and participating in all phases of the software development lifecycle.This role offers a fantastic opportunity to grow your skills and make a significant impact in a collaborative environment.

We are seeking a passionate Front-end Developer who is eager to blend creativity with technical skills. In this role, you will be responsible for translating UI/UX design wireframes into code, bringing the visual aspects of our applications to life. You will collaborate closely with our UI/UX designers to bridge the gap between aesthetic design and functional implementation, actively contributing to both to define the application's appearance and performance.

Join our dynamic team at Sonsoft Inc. as a Java Developer specializing in Web Services. We are looking for a skilled professional who is passionate about developing innovative software solutions. In this role, you will work collaboratively in an agile environment to design, implement, and maintain robust applications that meet our clients' needs.

Join Sonsoft Inc. as a Java Developer specializing in Web Services. In this role, you will be responsible for designing, developing, and maintaining robust web applications. Your expertise in Java and web service technologies will contribute to enhancing our software solutions and improving user experiences.If you are passionate about technology and eager to work in a dynamic environment, we encourage you to apply!

Join Sonsoft Inc. as a Java Developer specializing in Web Services. In this role, you will design, develop, and maintain robust Java applications that leverage web services. Your expertise will contribute to our dynamic team as we tackle exciting projects and innovate solutions.

Role overview Pinterest is seeking a Principal Engineer to join the Online Systems team, based in either San Francisco or Palo Alto. This position centers on designing and building scalable systems that serve millions of users. The focus is on enhancing user engagement and optimizing the performance of Pinterest's online platforms. What you will do Architect and develop large-scale applications built for high-traffic environments Collaborate with engineering, product, and design teams to deliver reliable solutions Lead technical decisions that influence the direction of Pinterest's online systems

About Pax HistoriaPax Historia is an innovative alternate-history sandbox game that allows players to select a country and a pivotal moment in time, enabling them to rewrite history. Imagine a world where Rome never fell, the Soviet Union thrived, or Genghis Khan reigned longer.Supported by Y Combinator, Pace Capital, and Z Fellows, our game has amassed nearly 20 million rounds played and is experiencing rapid growth. Your contributions will impact a product enjoyed by hundreds of thousands of players.Our CultureMany of our players discover Pax Historia through word-of-mouth, YouTube reviews, and other organic channels, and they return because of our commitment to building an exceptional game. We want every team member to share this passion. History enthusiasts are particularly welcome, but we encourage anyone who can articulate their excitement about our game to apply.As a small company, you will collaborate closely with the cofounders and a select group of employees. We seek self-motivated individuals who are team players and ready to champion their ideas. The leadership style here values autonomy, allowing you to thrive without micromanagement.Flexibility is crucial in our fast-paced environment. As we scale, be prepared to address various challenges that arise.Your RoleWe are looking for a full-time web developer to join us on-site in San Francisco (Dogpatch). You will report directly to the cofounders. This role is intensive, with an expected commitment of 50-60 hours per week initially, transitioning to potentially fewer hours as you settle in. While we prefer candidates who can commit to in-person work, there may be slight flexibility for hybrid arrangements (e.g., 1 day per week remote). Your schedule will have some flexibility.As a web developer, you will play a key role in enhancing the customer experience on paxhistoria.co.Given our small team size, you will also be expected to assist with various ad-hoc projects as they arise. This is a dynamic, evolving role!

Join Our Team as a Front-End Engineer:Are you passionate about anime and eager to create cutting-edge tools for the anime and video game industry? We are looking for a skilled Front-End Engineer to collaborate with our talented team at spellbrush. In this role, you will design and develop sophisticated front-end applications using React and TypeScript, ensuring that our user interfaces are responsive and engaging.Ideal Candidates Will:Embrace the Anime AestheticIf you're an anime enthusiast, you'll have the chance to explore innovative possibilities within the industry. Your love for the genre will drive your creativity as you contribute to our projects.Thrill in Building Complex Single-Page Applications (SPAs)Our applications are interaction-heavy and dynamic, resembling tools like Photoshop and Blender more than standard SaaS applications. A strong desire to explore canvas, WebGL, and possibly WebGPU will set you apart!Possess a Strong Design SenseLarge SPAs come with unique UI/UX challenges. We're in search of someone with a keen eye for design, capable of crafting tasteful UI layouts, seamless user experiences, and engaging microinteractions.Thrive in a Small, Agile Team EnvironmentWith a compact team of three dedicated frontend engineers, you will have the opportunity to work closely with some of the world's leading AI researchers, integrating advanced models into your stunning interfaces. We value the speed and efficiency of in-person collaboration, and we have offices in both Tokyo (downtown Akihabara) and San Francisco. Visa sponsorships are available.

About UsAt Parallel, we are pioneers in web infrastructure, empowering businesses in sales, marketing, insurance, and software development to create state-of-the-art AI agents. Our innovative products grant flexible and robust programmatic access to the web.With a remarkable funding of $130 million from leading investors including Kleiner Perkins, Index Ventures, Spark Capital, Khosla Ventures, First Round, and Terrain, we are on a mission to redefine the web for AI applications. Join our exceptional team of engineers, designers, marketers, and researchers as we embark on this exciting journey.About YouYou are a skilled front-end developer with expertise in modern frameworks and a passion for crafting maintainable and user-friendly interfaces. Your experience includes working with TypeScript, contemporary CSS, Vercel, and headless CMS platforms like Sanity.Your understanding of responsive design, web performance, and accessibility principles is solid. You are adept at reading API documentation, collaborating with backend teams, and creating intuitive developer tools. Familiarity with data visualization or technical documentation is an added advantage.The RoleAs Parallel continues to grow, we seek an experienced front-end development lead to elevate our web properties from their initial versions to outstanding platforms that cater to our expanding customer base.Your primary focus will be on designing, building, and enhancing the web experiences that showcase the capabilities of our powerful APIs. You will concentrate on three key properties:Parallel.ai — our marketing sitePlatform.parallel.ai — our developer dashboard and playgroundDocs.parallel.ai — our technical documentation hubResponsibilitiesOversee web deployment and hosting operations across our digital assetsCollaborate with product and marketing teams to craft engaging web experiences that effectively communicate Parallel's core messages and product featuresWork closely with developer relations and deployed engineers to create demos and documentation that simplify complex technical concepts for developers.

About UsAt salient, we are pioneering the AI infrastructure that will revolutionize financial operations, starting with the automation of intricate workflows in loan servicing.Supported by top-tier investors like a16z and Y Combinator, we have successfully raised $65 million in Series A funding.Achieving an 8-figure Annual Recurring Revenue (ARR) in under two years, we currently serve over 20% of the auto lending industry, efficiently processing millions of customer calls and transactions daily.Our solutions are fully operational with leading financial institutions, going beyond mere proofs of concept.We are rapidly expanding into new segments of financial services!Embrace our vibrant in-person office culture located in San Francisco, CA.Our team is fully integrated with our clients, managing the entire stack, and moving swiftly to introduce modern AI into regulated sectors where accuracy, consistency, and performance are paramount.About the RoleWe are seeking a dedicated Front-End Software Engineer to create dynamic, user-friendly interfaces that empower users to interact with complex data effectively. You will collaborate closely with product, design, and AI teams to develop elegant user interfaces, define frontend architecture, and deliver features that significantly enhance user experiences at scale.As an early and visible member of a nimble engineering team, you will take ownership of features from inception to delivery, contribute to UI strategy, and help mold the future of our products as we expand our offerings beyond voice.What You’ll DoCraft responsive and high-performance user interfaces utilizing React and TypeScriptSimplify complex workflows into user-friendly product experiencesEngage in cross-functional collaboration with product, design, and AI teams to innovate and iterate quicklyContribute to defining frontend architecture and develop reusable UI componentsCreate data visualizations that clarify and make financial data actionableCollaborate with backend engineers for seamless API and service integrationsDeliver clean, testable, and maintainable code in a rapid release cycleChampion the user perspective in product and engineering discussionsWhat You’ll Bring4+ years of experience in developing production-level front-end applicationsProficient in React and TypeScript, with a solid understanding of modern web technologiesDemonstrated ability to translate complex requirements into user-friendly solutions

About the RoleLead the design and user experience for all web platforms at Hex, including our website, documentation site, and future projects.Develop and implement high-quality, production-ready front-end code using React or Next.js, taking ownership of the user experience from concept to delivered UI.Oversee launch assets in collaboration with the marketing team, ensuring that every major product moment is visually impactful and aligns with our brand identity.Set and uphold visual quality, patterns, and consistency across all web experiences.Collaborate closely with designers and marketers to create compelling narratives and clear visual stories.Drive the long-term web roadmap, identifying opportunities for performance enhancements, clarity in messaging, storytelling, and experimental approaches.Work alongside engineering teams, contributing front-end code directly to ensure adherence to high implementation standards.Enhance product illustrations and light motion graphics to infuse joy and character into key moments.Over time, build, manage, and mentor a team of engineers and designers.Influence the processes, standards, and creative culture within the Design team.

Join SoFi as a Senior Web Platform Engineer and be at the forefront of building innovative web solutions that empower our users. You will work on enhancing and maintaining our web platform, ensuring high performance, scalability, and security. Collaborate with cross-functional teams to implement new features and optimize existing ones, using the latest technologies and best practices in web development.

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.

Role Overview Harvey is seeking a Head of Web Development in San Francisco to guide web projects and set the direction for our digital presence. This leadership role manages the web development team and steers projects that support company goals. What You Will Do Lead and mentor the web development team Oversee delivery of web solutions that meet business objectives Shape and execute digital strategy for Harvey’s online platforms Focus on improving user experience and increasing engagement