Senior Backend Engineer - Growth Opportunities

About AtticusEvery day, millions of Americans find themselves in urgent need of legal or governmental support due to crises affecting their lives. At Atticus, we believe that the right assistance can significantly change these individuals' futures, yet too many never receive it.Our mission is to simplify access to vital help for those who are sick or injured…

Substack is building a platform that enables writers and creators to publish independently, connect directly with their audiences, and maintain creative and economic control. By focusing on a direct subscription model, Substack supports a growing movement in independent publishing, allowing creators to sustain themselves outside traditional media channels. Role overview This Backend Software Engineer position sits within the Activation team. The team’s mission is to design and build features that bring in new readers and help them find content they care about. Work centers on improving how users discover publications, refining onboarding, enhancing notifications, and delivering personalized recommendations. The role also involves running A/B tests on important user flows to understand what drives engagement. Collaboration Engineers at Substack work closely with designers, product managers, and users. This collaboration ensures that the features built genuinely help creators succeed and maintain their independence.

About UsAt Verkada, we are revolutionizing the way organizations ensure the safety of their people and assets through an integrated, AI-driven platform. As a frontrunner in the realm of cloud-based physical security, we empower organizations to enhance safety and operational efficiency with a unified software solution that encompasses video surveillance, access control, air quality sensors, alarms, intercoms, and visitor management systems.Trusted by over 30,000 organizations globally, including more than 100 Fortune 500 companies, Verkada serves as an essential security layer that simplifies management, provides intelligent oversight, and supports scalable implementations. Since our inception in 2016, we have experienced rapid growth, expanding to 15 offices and employing over 2,200 dedicated professionals.Role OverviewAs a Backend Engineer on our Growth Engineering team, you will play a pivotal role in developing and maintaining the critical growth infrastructure that supports Verkada's ambitious objectives. This position demands a candidate with strong technical expertise and a passion for solving complex business problems. You will be key in engineering resilient and scalable systems that drive our most essential growth strategies and initiatives, reporting directly to our Engineering Manager.We foster a vibrant in-office culture, and this role requires you to be present at our headquarters in San Mateo, CA five days a week.Key ResponsibilitiesDesign and implement robust and observable infrastructure to drive Verkada's growth engine.Enhance and maintain backend systems to streamline the purchasing journey and optimize automated workflows.Develop a complex multivariate experimentation infrastructure to enhance the efficiency of the marketing funnel.Facilitate seamless integration of new technologies and platforms with existing systems.Collaborate cross-functionally with Sales, Marketing, and Product teams to translate intricate business needs, define feature specifications, and implement solutions for an improved user experience.Drive innovation in marketing technology to improve operational effectiveness and enhance customer engagement.

About Our TeamJoin the innovative ChatGPT team at OpenAI, where we blend research, engineering, product development, and design to introduce cutting-edge AI technologies to the global audience.Our mission is to learn from deployment and ensure the responsible and safe use of AI, maximizing its benefits for all. We are dedicated to making our tools universally available, breaking down barriers related to geography, economy, and platform. Our commitment is to enhance lives through AI while gaining deep insights into user interactions with our products.About the PositionWe are seeking a skilled Backend Software Engineer to join our dynamic ChatGPT Growth team. This role will be pivotal in driving high-impact projects aimed at expanding the ChatGPT user base and Plus Subscribers. Responsibilities will include enhancing account accessibility, optimizing notifications, improving SEO, and promoting user engagement and virality. As we embark on our growth journey, your insights will be crucial in identifying strategic opportunities that can lead to substantial results. We value engineers who are driven by impact, exhibit autonomy, possess strong analytical skills, and can effectively eliminate barriers to utilizing the full potential of ChatGPT.Your ResponsibilitiesLead initiatives to drive long-term growth for ChatGPT through data analysis, product ideation, and experimental design to enhance user experiences.Collaborate with iOS, Android, and fullstack engineers to design and implement backend systems that support these product experiences.Work closely with research, product, design, data science, and other teams to ensure impactful execution on project goals.Foster an inclusive culture that encourages open communication and challenges conventional thinking.Ideal Candidate ProfileDemonstrated experience in delivering features that optimize user journeys, including landing pages, product pages, and purchase flows.Strong analytical mindset with a track record of designing and executing A/B tests, employing a scientific approach to data-driven experiments. Proficient in tracking business metrics and KPIs, and skilled at deriving actionable insights from data.Possess a strong desire to learn and develop new skills, showcasing a commitment to personal and professional growth.

At WHOOP, we are dedicated to revolutionizing human performance and extending healthspan. Our mission is to empower individuals to reach their optimal potential by providing comprehensive insights into their physiological well-being through our cutting-edge wearable technology. By continuously monitoring vital metrics, we deliver personalized recommendations that enhance fitness, health, and recovery.The Growth Team at WHOOP embodies a dynamic, fast-paced, and experimentation-focused environment. Our primary objective is to drive user acquisition, activation, and retention through a data-driven approach. We rigorously evaluate the performance of our features and iterate based on quantifiable results.As a Software Engineer II on the Growth Team, you will play a pivotal role in developing features that significantly influence our business metrics and member growth. Your collaboration with cross-functional teams will be essential in designing, measuring, and refining high-impact mobile experiences that resonate with our users.

At WHOOP, we are dedicated to transforming human performance and enhancing healthspan. Our mission is to empower members to achieve peak performance through a profound understanding of their bodies and daily lives. With our cutting-edge wearable technology, we monitor essential physiological metrics to provide tailored insights that boost fitness, health, and recovery.The Growth Team at WHOOP is a dynamic, results-oriented group committed to driving user acquisition, activation, and retention. Our data-centric approach enables us to continuously assess the effectiveness of our features and iterate based on those insights.As a Senior Backend Software Engineer, you will be instrumental in constructing backend services that significantly influence our business metrics and foster member growth. Collaborating cross-functionally, you will deliver impactful features and contribute to architectural decisions, ensuring WHOOP's scalability to millions of members.

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.

Join our innovative team at natter as a Senior Backend Engineer! We are looking for a passionate engineer to help us build scalable backend systems and contribute to our growing projects. If you thrive in a collaborative and remote environment, we want to hear from you!

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.

At Affirm, we are transforming the credit landscape by making it more transparent and user-friendly. Our mission is to empower consumers with the ability to buy now and pay later, free from hidden fees and compounding interest.The Growth Platform team is instrumental in developing shared backend systems that drive incentives, experimentation, personalization, and data-informed decision-making across Affirm's interactions with both consumers and merchants. This directly impacts our efforts in customer acquisition, engagement, and retention.

About SolaceAt Solace, we're on a mission to revolutionize healthcare in the U.S. The healthcare system is fraught with complexity, leaving 88% of adults lacking the health literacy to navigate it independently. Our innovative approach connects patients with expert advocates and equips them with essential tools for informed decision-making, ultimately leading to better health outcomes.Founded in 2022 and backed by prominent investors like Inspired Capital and Menlo Ventures, we are a rapidly growing Series C startup. Our dedicated, mission-driven team is based in the U.S. and is committed to making a genuine impact in the healthcare landscape.Solace is not a place for complacency; we strive for urgency, precision, and compassion. If you're eager to challenge yourself, enhance your skills, and contribute to meaningful work alongside a passionate team, you've found your ideal environment. We thrive on intensity and are driven to excel.About the RoleAs a Senior Backend Engineer, you'll be an integral part of our talented engineering team. You'll take full ownership of your product workflow, from conceptual design to deployment. We expect you to work dynamically, committing code daily while witnessing the immediate impact of your contributions in real-time as we build groundbreaking solutions from the ground up.Your expertise will be crucial in identifying issues and architecting high-quality solutions. You should be curious, enjoy tackling ambiguous challenges, and take pride in your work. Strong communication skills and the ability to absorb feedback are essential. Embrace the learning journey from mistakes, and thrive in a fast-paced environment free from the constraints of large organizations.What You'll DoDesign and implement scalable services and APIs that enhance both existing and new features of our web applications.Architect and maintain resilient backend systems while managing database models for optimal performance.Collaborate closely with cross-functional teams to ensure seamless integration and functionality of systems.Continuously optimize and refine backend processes to enhance efficiency and user experience.Contribute to code reviews and foster a culture of excellence and innovation within the engineering team.

Join our dynamic team as a Senior Backend Engineer at antithesis, where you will play a crucial role in developing innovative backend solutions that drive our cutting-edge projects. As a Senior Backend Engineer, you will work closely with cross-functional teams to design, implement, and optimize our backend architecture, ensuring high performance and scalability.

tvScientific, now part of Pinterest, develops a connected TV advertising platform designed for performance marketers. The team brings together expertise in data, automation, and digital media to help brands buy, optimize, and measure TV ads more effectively. The platform integrates media buying, optimization, measurement, and attribution, aiming to offer advertisers a dependable way to grow through CTV. Role overview The Senior Backend Engineer will design, build, and scale systems that manage contracts and billing for direct advertisers, internal teams, and the Finance department. This work centers on backend services that support a range of contract types and billing models, with a focus on accuracy, auditability, and operational reliability. What you will do Architect and develop backend services for contracts and billing Support multiple contract structures and billing models Ensure system correctness and auditability Maintain operational reliability as the platform expands Work on systems that manage complex commercial relationships and external partners Keep contract logic consistent, adaptable, and maintainable Where this role fits This senior backend engineering role connects revenue, finance, and customer operations. Success in this position requires clear domain modeling, strong data integrity, and disciplined engineering practices. Location Based in San Francisco, CA, or remote within the United States.

About AirwallexAirwallex is a pioneering unified payments and financial platform designed for global enterprises. With our unique blend of proprietary infrastructure and advanced software, we empower over 200,000 businesses worldwide—including industry leaders like Brex, Rippling, Navan, Qantas, and SHEIN—with fully integrated solutions for managing everything from business accounts and payments to spend management and treasury functions, all at a global scale.Founded in Melbourne, we are proud to have a diverse team of over 2,000 innovative professionals across 26 offices worldwide. With a valuation of US$8 billion and backing from premier investors such as T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, Airwallex is at the forefront of creating the future of global payments and financial services. If you are ready to take on the most ambitious challenges of your career, we invite you to join us.

About the RoleAs a Senior Backend Engineer at sportygroup, you will play a pivotal role in crafting robust microservices within a distributed deployment framework. Emphasizing containerization with Docker and Kubernetes, your work will go beyond basic CRUD applications, immersing you in the core logic of complex systems that handle millions of daily requests. Our platform, developed from the ground up three years ago, leverages the latest technologies, freeing you from the burdens of legacy code. If you are eager to work with Spring Boot and possess solid experience in an object-oriented programming language, we welcome your ambition to learn.Our Technology Stack (Familiarity with all is not required)Languages: Java 17Frameworks: Spring Boot (Tomcat, Netty), Spring Data, Spring CloudArchitecture: Microservices, REST APIs, Message QueuesDatabases: MySQL, MyBatis, ShardingSphere, MongoDBCaching: Redis (AWS ElastiCache), ElasticSearchMessage Queues: RocketMQCloud: Docker, Kubernetes, AWSMonitoring: Grafana, Prometheus, Loki, Tempo, AWS CloudWatchYour ResponsibilitiesDevelop scalable backends for mobile applications serving millions of users.Collaborate with Product Owners and development teams to define necessary features and user stories for new and revised applications or complex projects.Engage in peer and manager code reviews to ensure adherence to original visions and appropriate architecture patterns.Respond to production support inquiries for prompt diagnosis and resolution to maintain seamless user experiences.Participate actively in team ceremonies, including planning, grooming, product demonstrations, and retrospectives.Mentor junior team members and share knowledge.Potential on-call responsibilities based on team and tenure.Your BackgroundA minimum of 6 years of experience in a relevant role.Preferred experience with Spring Boot, Spring Cloud, Spring Data, and iBATIS.Proven track record in developing highly scalable web backends.Experience in designing high-transaction systems.Strong proficiency in Object-Oriented Design (OOD) and analysis.Advanced understanding of application analysis and design engineering functions.Expertise in applying non-functional software qualities such as resiliency and maintainability.

Location: Austin (Domain), TX (In-office 4x per week) Company: Kizen, www.kizen.com OTE - $207,000-$253,000 About Us Kizen is pioneering the future of work with our innovative platform, AI Agents, and True Context Technology (TCT), serving leading organizations in highly regulated sectors such as insurance, healthcare, and financial services. Our platform empowers organizations to streamline their most critical workflows — from assisting insurance agents with contracting and commissions, to enabling healthcare providers to offer proactive patient care, and empowering financial institutions to automate document classification and data extraction. At Kizen, we enable developers to craft new enterprise applications and impactful AI agents, while allowing business users to tailor dashboards and agents using natural language, low-code, or traditional coding — all within a unified platform. What once took months or years to develop can now be accomplished in mere days. Kizen merges cutting-edge pre-built agents and use cases with an enterprise platform designed for automation and data connectivity, all built on an AI-first architecture that is user-friendly, scalable, and reliable. We are committed to solving genuine operational challenges and assisting the world’s most complex organizations in working faster, smarter, and more empathetically. Join us in redefining industry workflows — one process, one agent, and one success story at a time. About the Role Are you ready to shape the future of work? We’re translating AI and intelligent automation into practical applications for real users. We are seeking a proactive Senior Engineer with a track record of prioritizing user outcomes and swiftly delivering dependable, scalable systems as we launch our next-gen platform. This is an exceptional opportunity for anyone eager to be at the forefront of the AI revolution that enhances human existence. As a Senior Backend Engineer, you will collaborate closely with our Director of Platform Engineering to develop new user-facing features and enhancements while scaling the Kizen platform to meet our users’ evolving requirements. Our core values form the essence of Kizen’s identity. They are ingrained in our culture, guide our decisions, and reflect in our interactions with customers, partners, and each other.

Join Via, where we leverage technology to revolutionize global transportation. As a Senior Backend Engineer, you will play a pivotal role in our Platform team, contributing to innovative solutions that impact the daily commutes of thousands while minimizing environmental impact. Collaborate with a talented group of developers and DevOps engineers to build and maintain the cutting-edge infrastructure that powers our operations. This hybrid role requires you to be onsite in NYC 2-3 days a week, allowing for hands-on teamwork and collaboration.

Role overview As a Senior Backend Engineer at Postscript, the focus is on building and refining the core systems that power the platform. This role is fully remote, offering flexibility while working with a distributed team. The position emphasizes designing backend solutions that enable the platform to scale and remain reliable as it grows. What you will do Collaborate with teams throughout the company to design backend systems that can scale as demand increases Work to optimize performance and ensure the reliability of platform services Share ideas and develop solutions to strengthen the backend architecture

Join squaredomain as a Senior Backend Server Engineer and contribute to the development of innovative gaming solutions. We are on the lookout for a talented individual with expertise in backend technologies to enhance our e-commerce systems and web gaming experiences.Proficiency in Python; knowledge of Object-Oriented programming, especially in C++, would be a bonus.Experience with AWS and IaaS platforms.Familiarity with Linux environments and source code control systems, along with release management practices.Experience in building and consuming RESTful APIs.Experience with Django, Tornado, or Twisted is a plus.Knowledge of Node.js and frameworks like AMQP.Strong background in API development and integration.