Senior Backend Software Engineer

About WorkWhileAt WorkWhile, we are dedicated to empowering hourly workers to achieve financial stability and improved quality of life. With over 80 million Americans engaged in hourly employment, many face unpredictable schedules, low wages, and scarce benefits, which can lead to economic hardship.Our innovative platform is transforming the landscape of frontline work by fostering a more adaptable and effective labor market. Leveraging advanced AI technology, WorkWhile enables businesses to swiftly connect with top-tier talent. Workers enjoy same-day pay, complimentary telehealth services, opportunities for skill advancement, and the flexibility to select shifts that align with their expertise and personal schedules.Our ambitious aim is to harmonize incentives and address inefficiencies in the labor market, challenging the $650 billion staffing and recruiting industry. Supported by Khosla Ventures and celebrated by the Inc. 5000 for remarkable growth, WorkWhile is at the forefront of redefining the future of work.

At Plaid, we're reimagining the future of financial interactions. Join us in our mission to empower developers and enhance the financial lives of millions. As a Senior Backend Software Engineer, you will play a pivotal role in creating robust tools that streamline how users connect their financial accounts to various applications. Collaborate with industry leaders and contribute to a network that spans over 12,000 financial institutions across North America and Europe. You’ll be instrumental in driving innovation and excellence in our engineering practices while working alongside a talented team committed to making a real impact in the financial landscape.

Role Overview Sigma Computing builds a high-performance data platform aimed at making data accessible and useful. The engineering team focuses on modern data architecture and delivers features that help organizations explore and analyze data efficiently. As the team grows in San Francisco, Sigma is looking for a Senior Backend Software Engineer who enjoys solving complex problems and contributing to a product used by a wide range of users. What You Will Do Tackle challenging problems related to providing interactive experiences on data warehouses for exploration and analysis. Work with technologies including Rust, Go, GraphQL, Node, and Kubernetes. Build backend distributed services, design algorithms, and create APIs for a cloud-based application. Debug, track, and resolve product or system issues as they arise. Design and implement new backend features to support a growing user base. Participate in design and code reviews with teammates and stakeholders to maintain high standards and share knowledge. Location This position is based in San Francisco, CA.

HeartFlow Inc. seeks a Senior Backend Software Engineer in San Francisco, California. This role centers on designing and enhancing backend systems that power the company’s cardiovascular analysis platform. The technology supports both clients and clinicians, contributing to patient care in the medical field. Key responsibilities Build and improve backend software components for HeartFlow’s main platform Work closely with engineering, product, and clinical teams Support software quality and reliability for medical use Take part in solutions that aim to improve cardiovascular health outcomes Location This position is onsite in San Francisco, California.

At Julius, we are experiencing rapid growth, connecting with millions of knowledge workers. We invite a talented backend engineer to join our dynamic and highly skilled team, dedicated to transforming AI-powered code execution and data analysis.As a Senior Backend Software Engineer, you will take the lead in designing, implementing, and scaling the systems that drive our web and mobile applications.Your Responsibilities:Develop innovative products that integrate AI capabilities for millions of knowledge workers.Architect and enhance backend systems that support the core functionalities of Julius.Create robust interfaces between backend systems and web/mobile clients.Focus on scaling and load balancing of web server backends to meet evolving demands.Qualifications:Proficient in Python or a similar backend programming language.Extensive experience with database management, pooling, and concurrency.Familiarity with cloud services such as AWS, GCP, or Azure.Knowledge of infrastructure tools like Kubernetes and Terraform (or a desire to learn).Strong skills in designing extensible systems.Minimum of 2 years of engineering experience.Bonus: Experience with R programming language.Bonus: Prior work on AI side projects and interest in experimenting with LLMs.About Julius:Location: San Francisco, CA Type: Full TimeCompensation: Competitive base salary with significant equity options.Benefits: Comprehensive health and dental coverage, gym reimbursement, and daily team lunches.We are an innovative applied AI lab focused on creating coding agents. Our mission is to empower one billion individuals to become software creators, starting with data science and analysis applications. Our users include professionals from finance, operations, scientific research, and academia.

Role overview Sleeper is looking for a Senior Backend Software Engineer based in San Francisco. The main focus is on building scalable backend systems that enhance the overall user experience on the platform. This position plays a key role in supporting the technical foundation as Sleeper continues to grow. What you will do Design, develop, and maintain backend solutions that power the Sleeper platform Work closely with teams from different disciplines to deliver new features and improvements Help ensure backend services remain stable and performant as the number of users increases

About UsWe are an innovative stealth-mode company funded by a16z Speedrun, dedicated to empowering leading consumer brands to achieve exceptional growth. Our cutting-edge solutions have gained the trust of pioneering organizations like Higgsfield and Promova among others. As we expand, we seek talented individuals who are eager to make a significant impact in the realm of consumer technology. You will be part of a passionate team at a crucial juncture, thriving in an environment that champions initiative, ambition, and creative solutions.The RoleAs a Senior Backend Engineer, you will be instrumental in developing and maintaining the essential backend infrastructure that powers our products. Your responsibilities will include:Designing scalable architectures that effectively support new product features and business objectives.Leading the development, deployment, and optimization of backend services to ensure top performance, reliability, and maintainability.Collaborating with cross-functional teams to seamlessly integrate third-party platforms, APIs, and cutting-edge AI technologies.Facilitating technical discussions, providing mentorship, and sharing best practices with fellow team members.Actively contributing to the continuous enhancement of our engineering standards and development workflows.Proactively identifying and addressing complex technical challenges to ensure stable and secure operations.What We ExpectA minimum of 5 years of professional experience in backend development, showcasing a history of delivering reliable and scalable systems.Advanced expertise in server-side programming and experience in designing database-driven applications.A solid understanding of API development, systems integration, and software engineering best practices.Proven experience in building and maintaining production environments that scale effectively for real users.An independent, proactive approach to problem-solving, coupled with the ability to drive projects forward.A commitment to joining our team full-time, with a desire to grow within a fast-paced, ambitious startup.How to ApplyPlease send us a brief introduction about yourself, along with a description of a technical project or system you are most proud of. We are excited to learn how you can contribute to our vision and success.

About the PositionAs a Senior Backend Engineer at Nash, you will be instrumental in the design and development of our backend systems, services, and APIs. Collaborating closely with our CTO, co-founder, and the engineering and product teams, you will help scale our platform, enhance performance, and build a robust infrastructure that facilitates seamless logistics operations. This role presents an exciting opportunity to contribute to Nash as we create innovative products across the logistics value chain for enterprises, marketplaces, and small to medium-sized businesses (SMBs).Key ResponsibilitiesDesign, develop, and maintain high-performance, scalable backend services and APIs.Architect and implement efficient data structures and models.Optimize system performance, scalability, and security.Debug, troubleshoot, and resolve backend issues in production environments.Work closely with frontend engineers to develop seamless API integrations.Implement best practices for observability, monitoring, and logging to ensure system reliability.Collaborate both independently and as part of a team to tackle complex technical challenges.Promote best practices in documentation, testing, and maintainability.Qualifications4+ years of experience in developing and deploying scalable backend systems.Proficient in Python and related backend frameworks.Experience in designing and utilizing RESTful APIs and databases (e.g., PostgreSQL, AWS RDS).Solid understanding of cloud platforms (preferably AWS) and deployment best practices, including managed services (serverless, databases, queues) and CI/CD pipelines.In-depth knowledge of scalable system design and performance optimization.Exceptional problem-solving skills with the ability to work independently in a dynamic environment.Startup experience is advantageous but not mandatory.Preference for candidates located in the Bay Area; Nash operates a hybrid-first product team with an office in San Francisco.Bonus: Familiarity with AsyncIO and event-driven programming.

About FormalAt Formal, we are redefining data security with our innovative platform that empowers teams to effortlessly manage and understand their data.We are developing a cutting-edge protocol-aware reverse-proxy for datastores and APIs, enabling organizations to gain real-time insights into their data management. This ensures that sensitive information is handled with utmost care through robust masking, filtering, and anonymization policies.Our solutions are trusted by industry leaders like Ramp, Gusto, and Notion, addressing critical needs in data security, compliance, quality management, and infrastructure access.Backed by leading venture capital firms such as Thrive Capital and Y Combinator, along with angel investors who are executives and founders from top tech companies like Datadog, Clickhouse, Plaid, and Vanta, Formal is poised for rapid growth.About the RoleWe are on a quest to assemble the most talented engineering team and are seeking individuals eager to make significant contributions towards shaping our product and advancing our mission.The ideal candidate will possess extensive experience in developing scalable backend systems, demonstrate a strong sense of ownership, and thrive in managing projects from concept to production deployment.Our current technology stack includes Golang, Rust, Temporal, various datastore protocols (Postgres, S3, Kafka, MySQL, Snowflake, Redshift, SSH), and AWS.What You'll DoDesign and implement a high-performance data platform capable of processing large data volumes in real-time.Develop new product features from initial research through implementation and ongoing maintenance.Enhance the performance and reliability of both new and existing features.Lead initiatives that you believe will significantly impact Formal's success.Architect scalable services as our organization expands and manages increased traffic.What You NeedProven experience in software development focusing on data-intensive platforms.A commitment to writing simple, high-performance code.Strong expertise in Golang with a solid understanding of its ecosystem.Experience with streaming data processing frameworks such as Apache Kafka and Google Pub/Sub.

About the RoleWe are seeking a highly skilled Senior Backend Software Engineer to join our dynamic team at FurtherAI, located in the heart of San Francisco, CA. Please note that this position requires in-office presence and is not eligible for full-time remote work.CompensationThe annual salary range for this role is between $150,000 and $250,000, commensurate with experience, along with equity options and comprehensive benefits.Who We AreAt FurtherAI, we are pioneering revolutionary AI-driven solutions specifically designed for the insurance sector, a vast market primed for disruption. With over $30 million raised from esteemed investors such as Andreessen Horowitz, Y Combinator, Nexus, South Park Commons, and Converge, our company has experienced remarkable growth, achieving a tenfold increase in revenue this year alone. We proudly serve some of the largest insurance providers globally, including a recent partnership with a top-five insurer. Our team consists of AI experts and seasoned entrepreneurs, ready to reshape the future of insurance.Why You Should Join UsExponential Growth: Experience the thrill of being part of a post-product-market fit company with rapidly increasing revenue.Elite Team: Collaborate with an exceptional founding team that includes former members from Apple AI Research, several ex-Y Combinator founders, and veterans from leading tech companies like Microsoft, Google, and Amazon.Technical Challenges: Engage with advanced AI problems alongside a staff research scientist and a talented team of engineers.Impactful Work: Be a part of transforming the insurance industry, a critical component of global commerce.Ownership Mindset: Take charge of significant aspects of the product and explore future entrepreneurial opportunities.Your ResponsibilitiesArchitect and enhance the core product to ensure optimal performance and reliability.Take ownership of substantial portions of our backend stack, primarily utilizing Python.Work closely with the founders to define and drive the technical roadmap.Demonstrate a strong sense of ownership in a fast-paced work environment.Commit to working in-person at our San Francisco office five days a week.

Are you ready to challenge your limits and embrace your potential?At Coinbase, we are dedicated to enhancing economic freedom across the globe. This is an ambitious mission that requires our utmost commitment as we develop the future of the global financial system through our innovative on-chain platform.We’re searching for a unique individual who is not only passionate about our mission but also believes in the transformative power of cryptocurrency and blockchain technology to revolutionize the financial landscape. If you are driven to make a meaningful impact, thrive in high-pressure environments, and value constructive feedback, we want you on our team to tackle our most complex challenges.Our work culture is intense and might not be suitable for everyone. However, if you aspire to create the future alongside exceptional professionals who demand excellence, there is no better place to grow.While many roles at Coinbase are designed to be remote-first, we are not exclusively remote. In-person collaboration is encouraged throughout the year, with regular team and company-wide offsite events to enhance teamwork, connection, and alignment. Your participation is anticipated and fully supported.About the Team:Our Financial Engineering team is responsible for establishing Coinbase's financial data and reporting infrastructure, ensuring accurate, timely, and verifiable financial operations. Collaborating closely with Finance, Accounting/Controllership, Treasury, and Product Engineering, we guarantee that financial data is comprehensive, reconciled, and traceable, supporting essential workflows such as month-end closing and large-scale reporting.Key Responsibilities:Develop new services using Golang to address critical product and business requirements.Design scalable systems that solve unique problems utilizing cutting-edge cloud technology and industry best practices.Articulate a long-term vision for the maintenance and scaling of our backend systems and the teams managing them.Collaborate with engineers, designers, product managers, and senior leadership to translate our product and technical vision into a concrete roadmap each quarter.Produce high-quality, well-tested code that meets customer needs.

Join Hive, a pioneering force in cloud-based AI solutions, as a Senior Backend Software Engineer. In this role, you will play a crucial part in our mission to deliver cutting-edge AI capabilities that empower hundreds of prestigious organizations worldwide. We are seeking passionate developers who thrive on transforming innovative ideas into scalable products and features. If you possess a strong foundation in building robust core services and web-based APIs, along with a commitment to writing clean, maintainable code, we want to hear from you!

Join Filevine, a pioneering Legal AI company, at the forefront of revolutionizing legal operations through advanced Legal Operating Intelligence. Our platform integrates data, documents, workflows, and teams into a cohesive system, ensuring that modern legal work is executed with clarity and precision.Driven by our proprietary LOIS (Legal Operating Intelligence System), Filevine transforms legal workflows from reactive to proactive by seamlessly connecting context across all matters. Our innovative solution not only comprehends and analyzes data but also automates complex processes, empowering legal professionals to make informed decisions with confidence. With numerous accolades from industry leaders like Deloitte and Inc., Filevine has established itself as one of the most innovative and rapidly growing technology companies in the nation.Role Overview:As a Senior Software Engineer focusing on Backend development, you will take ownership of critical components within our AI framework. You will be responsible for creating and prototyping new workflows, designing intricate pipelines, and deploying features that attorneys will utilize in a matter of days rather than months. Your contributions will influence how legal teams manage contracts, both in Word and online.

About FinchAt Finch, we're driven by a mission to transform the world of employment through innovative infrastructure that enhances every aspect of work. We seek individuals who approach challenges with a holistic mindset, possess a relentless curiosity, and are self-motivated, passionate about bringing ideas to fruition.As a Series B company, Finch is supported by an impressive array of investors including General Catalyst, Menlo Ventures, and YCombinator, alongside notable industry leaders like Charley from Plaid and Jeff from Digits.About Our TeamOur team consists of innovative problem solvers who challenge the status quo. We prioritize velocity, curiosity, empathy, and diverse perspectives, excited by the significant challenges we tackle and the impact we can make on the global workforce. We understand the weight of our responsibilities and commit to making security and privacy our top priorities.We embrace diverse backgrounds and encourage applications even if your qualifications don't perfectly align with the job description. Your unique skills and potential will shine through, especially if your career path has had interesting turns.About YouYou have a passion for deconstructing complex challenges to create seamless experiences for customers. Your blend of technical expertise and interpersonal skills, coupled with a high level of empathy, enables you to navigate ambiguity effectively. You excel at refining overarching issues into precise engineering solutions and collaborate across product, engineering, and support teams to ensure alignment and effectiveness. You value teamwork and are eager to contribute to the success of your colleagues. Comfortable in various roles, you are ready to take action. The opportunity to work on an API product that powers impactful applications excites you, even if the end users remain unaware of its existence.

Agency Notice: We are not partnering with recruiting agencies for this position. Please refrain from contacting Vizcom employees regarding this role. Any resumes submitted without prior agreement will be deemed unsolicited.Why Join Vizcom?At Vizcom, we are on a mission to transform the design landscape by simplifying the journey from concept to realization, bringing innovative ideas to life. We are backed by significant funding (Series B with $51m raised to date), experiencing rapid growth month over month, and expanding our core engineering team in San Francisco. Our work includes real-time collaboration, large-scale GPU inference, employing a modern TypeScript stack, and delivering enterprise solutions.Your RoleAs a Senior Backend Software Engineer, you will be pivotal in architecting and delivering backend systems that ensure Vizcom remains fast, reliable, and scalable as our workload and customer base expand. Your responsibilities will encompass everything from queueing GPU workloads to optimizing GraphQL resolvers and streaming real-time events. You will have comprehensive ownership over APIs, performance, and data integrity — collaborating closely with frontend and AI teams to create exceptional user experiences. Within your first 90 days, you will: successfully launch one key backend feature (e.g., model queue, caching layer, or real-time service), decrease p95 latency in a significant API path by approximately 30%, author a technical RFC suggesting improvements to architecture or reliability, and implement or document one observability enhancement (metrics, traces, alerts).Compensation$195,000 - $225,000 annually + Equity OfferingsWhat You Will AccomplishDesign and build scalable APIs using TypeScript/Node, GraphQL, and PostgresProfile and enhance performance for slow paths — queries, resolvers, and I/ODevelop and manage distributed systems: job queues, streaming, caching, and observabilityCollaborate with AI engineers to integrate GPU inference pipelines into user workflowsEnhance reliability: lead incident reviews and strengthen CI/CD and deployment processesGuide and mentor teammates on backend architecture, testing, and performance strategiesThe Challenges AheadDistributed GPU inference and queueing will be key areas of focus as we scale.

Join the innovative team at Sentra, where we are on a mission to create a unique company memory that empowers growing startups to navigate the complexities of scaling. At Sentra, we have engineered a groundbreaking AI teammate that comprehends your organization's context, goals, and culture, providing both individual contributors and leaders with unparalleled visibility into company dynamics and strategic cohesion.Supported by notable investors such as a16z and Together Fund, Sentra collaborates with prominent leaders from top tech firms in Silicon Valley. Our objective? To ensure that companies retain their identity and values as they expand.Your RoleDesign and deploy scalable backend and platform systems.Create LLM agents that seamlessly integrate with extensive datasets.Embrace ownership in a dynamic, fast-paced startup environment.Quickly learn and adjust to new challenges.QualificationsA minimum of 3 years of robust backend and platform engineering experience.Proven ability to work autonomously, learn rapidly, and thrive in a startup atmosphere.Proficient in Python, AWS, SQL databases, and API development.Bonus: Familiarity with LLMs, agentic frameworks, and RAG.What We OfferAttractive salary and equity options.Complimentary meals on in-office days.UberEats credits for your convenience.Comprehensive health insurance (medical, dental, and vision).Gym and wellness memberships including Equinox.Transportation stipend to ease commuting.Flexible time-off policies to promote work-life balance.Competitive compensation, equity, and a range of benefits for a seed-stage startup.

About Triumph ArcadeTriumph Arcade enhances the mobile gaming experience by enabling players to wager and win real money, engage in massive multiplayer games, and take part in social tournaments. Our app is recognized as the top-rated in its App Store category, achieving remarkable month-over-month growth in both revenue and active players. As we continue to scale our team, we are excited to introduce innovative products such as Rips, our successful collectibles app. We're just getting started!Supported by leading consumer VCs including Goodwater Capital, General Catalyst, and DraftKings Drive Fund, Triumph Arcade is poised for continued success.

Join Pinterest as a Senior Backend Software Engineer, where you'll be part of a dynamic team dedicated to building innovative solutions that enhance user experiences. We are looking for a passionate engineer with a strong background in backend development, who thrives in a fast-paced environment and is eager to tackle complex technical challenges.

About the Role Handshake is hiring a Senior Backend Software Engineer in San Francisco, CA. This role focuses on developing and improving the backend platform that powers the Handshake product. Work centers on building scalable systems that support user needs and enable new features.