Senior Backend Server Engineer

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 log…

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.

About the RoleJoin our innovative team at character as a Backend Software Engineer. In this pivotal role, you will develop and sustain scalable, high-performance backend systems that drive our products forward. You will collaborate closely with designers, data scientists, and fellow engineers to create, design, and implement robust backend solutions that meet user demands.Your ResponsibilitiesArchitect, develop, and manage scalable backend services that bolster our applications and infrastructure.Craft secure and efficient APIs to facilitate frontend applications and third-party integrations.Enhance system performance, reliability, and scalability through architectural best practices and engineering expertise.Collaborate with product managers, data analysts, and frontend engineers to deliver backend solutions that align with business goals and user expectations.Guarantee high availability, fault tolerance, and optimal performance of backend systems.Monitor system health, troubleshoot issues, and implement enhancements to improve efficiency and reliability.Adhere to security best practices to safeguard user data and maintain system integrity.Stay informed about industry trends and emerging technologies in backend development and distributed systems.Your Profile5+ years of experience in backend development, creating scalable and dependable applications.Strong proficiency in programming languages such as Python, Java, or Go, with a preference for Python and Go.Familiarity with database technologies, including PostgreSQL, MySQL, or NoSQL solutions.Experience in designing and integrating APIs, particularly REST and GraphQL.Understanding of distributed systems, microservices architecture, and cloud platforms (AWS, GCP, or Azure).Proficiency with containerization and orchestration tools like Docker and Kubernetes.Strong analytical skills with the ability to optimize system performance and reliability.Excellent communication skills and a collaborative mindset.Preferred QualificationsExperience with...

Join Coupang as a Staff Backend Engineer in our eCommerce Engineering team, where you'll have the opportunity to work on innovative projects that shape the future of online shopping.We are seeking a talented engineer with a passion for backend development and a strong understanding of eCommerce systems. You will play a critical role in designing and implementing robust backend solutions that enhance user experience and drive business growth.To apply, please ensure you complete the attached Internal Transfer Request Form and submit it along with your application.

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.

Why Weave ExistsAt Weave, we are on a mission to revolutionize the way therapeutic knowledge is captured, transformed, and communicated throughout the drug development process. Our innovative approach combines human expertise with advanced AI tools to accelerate the delivery of safe and affordable medications to patients.The Weave Platform enhances regulatory workflows at every stage by seamlessly integrating AI technology. Partnering with our clients, Weave is dedicated to creating the ultimate AI workbench for the entire therapeutic lifecycle.The Role & Your MissionWe are seeking a talented Staff Backend Engineer to join our engineering team, reporting directly to the Backend Engineering Manager. This role requires navigating between data, AI, and backend systems to ensure the stability, performance, and reliability of our AI systems. You will be responsible for developing innovative solutions to customer challenges, analyzing outcomes, and deploying these solutions into production. Success in this position hinges on your ability to transition smoothly from conception to experimentation, testing, and production. We prioritize effective problem-solving over trends, favoring straightforward, well-tested solutions that are reliable yet impressive.What You Will OwnUnderstanding customer challenges and creating straightforward solutionsCollaborating with Product and Design teams to rapidly identify solutionsWriting efficient, maintainable code using Django, Python, Postgres, and RedisManaging ongoing technical complexities while delivering value on product initiativesWhat You'll BringExperience in an early-stage, product-focused startup environment (fewer than 50 employees)Over 8 years of experience with Django in a production settingPractical experience using LLMs in productionAbility to interact directly with LLMs without the use of abstraction librariesA humble, hungry, and intelligent approachCapacity to work quickly while delivering high-quality outcomesPragmatic and analytical thinking with efficient decision-making skillsBonus: Experience working on products in regulated domains or with critical data privacy and security requirementsBachelor's degree in Computer Science or a related field preferred

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.

Join our innovative team at Lever as a Backend Engineer, where you will play a pivotal role in crafting cutting-edge software solutions that transform the hiring landscape.At Lever, we are dedicated to revolutionizing the way companies recruit top talent. Our software is trusted by industry leaders like Netflix, Yelp, Cirque du Soleil, Shopify, and Spotify. As we continue to grow, we seek talented individuals who are passionate about redefining talent acquisition.We are proud to be recognized as the #1 workplace in San Francisco and a top employer in the United States. Our team, known as “Leveroos,” is our greatest asset, and we are committed to fostering a people-first culture that celebrates collaboration and innovation.

At Collective Health, we are revolutionizing the way employers and their employees interact with health benefits. By integrating state-of-the-art technology, empathetic service, and exceptional user experience design, we are changing the landscape of healthcare.The Provider Servicing team is dedicated to enhancing our integrations with partners to ensure a smooth experience for our Providers. We prioritize delivering accurate information that Providers need to deliver care and process claims effectively. Maintaining information integrity and security is paramount as we utilize advanced technologies to achieve our goals. Our modern health management systems rely heavily on these integrations.As a Lead Backend Engineer, you will take ownership of the Provider Servicing systems, developing new AI-driven solutions while supporting existing microservices-based applications and integration platforms. This role offers opportunities for advancement, including leading a team, exploring new technologies, and contributing to our evolution into a comprehensive healthcare platform.

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.

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.

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.

About the Role HackerRank is hiring a Backend Engineer II for its hybrid office in Santa Clara, CA. This role focuses on building and improving backend systems that support developers and coding experiences. The team values collaboration across engineering, product, and other groups to deliver features that scale and perform reliably. What You Will Do Work with cross-functional teams to design and implement backend features Develop and optimize scalable backend systems Apply backend technology expertise to support HackerRank’s mission of simplifying coding challenges for developers Location This position is hybrid, based in Santa Clara, CA.

Join our innovative team at januaryinc as a Lead Backend Platform Engineer! In this pivotal role, you will drive the development of scalable backend systems that support our industry-leading products. Your expertise will guide a talented team as we push the boundaries of technology and deliver exceptional user experiences.

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

About ClipbookClipbook creates innovative, AI-driven media monitoring and analytics solutions tailored for communications, PR, and public affairs teams. Our tools empower users to effectively track, search, and comprehend media coverage across text, audio, and video formats.Since our inception in 2023, we've rapidly expanded our clientele to over 200, including prestigious organizations like BCG, Weber Shandwick, and numerous government agencies. We achieved seven-figure annual recurring revenue (ARR) through bootstrapping before successfully closing a $3.3M seed funding round led by Mark Cuban. Our sights are set on raising a Series A round this year, with an ambitious goal of reaching eight-figure revenue by year-end.Our founding team boasts impressive backgrounds from institutions like BCG, Bain, Harvard, Stanford, Oxford, and includes experience in the White House and Congress. We have previously developed startups that received backing from notable investors such as Sequoia, Tiger Global, Insight Partners, Coatue, and NFX.The RoleAs a pioneering engineer at Clipbook, you will join a dynamic and skilled engineering team, comprised of professionals from industry giants such as Meta, Stripe, and AWS. Your contributions will significantly shape our architecture and technical direction, delivering impactful solutions to our growing customer base.What You'll DoArchitect & build core backend systems. Lead architectural initiatives across our backend stack (Python, Node.js, PostgreSQL). Take ownership of features from ideation through deployment, ensuring user satisfaction with your creations. As we establish key foundations, we value a pragmatic approach with strong opinions that are flexible to change.Design scalable data infrastructure. Develop and sustain pipelines for processing and managing vast, multi-modal datasets (text, audio, video) sourced from news, social media, and policy arenas, focusing on normalization, deduplication, and handling edge cases.Integrate AI into real-world workflows. Deploy LLMs and ML models into operational settings, including RAG pipelines, embeddings, prompt execution, agentic systems, and fine-tuning models, ensuring reliability, monitoring, and cost efficiency.Design systems that scale. Create robust systems capable of supporting a tenfold growth while making pragmatic investment decisions on current versus future needs.Develop performant APIs and services. Build reliable interfaces and internal services that drive our product, guaranteeing a secure and seamless experience for users.Collaborate closely with users. Participate in customer interactions to gather insights on performance, identify issues, and iterate on solutions.

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. Over the past six years, we have emerged as the premier platform connecting individuals with disabilities to essential government benefits, assisting hundreds of thousands in securing over $10 billion in aid, and garnering more than 17,000 five-star reviews.With over $100 million raised from notable investors such as Fika, Forerunner, GV, and True Ventures, and the successful closure of our Series C funding in April 2025, our financial future is solid. Our team has expanded from 151 to 210 members in 2025, and we are poised for further growth in 2026.The RoleAs part of the Growth Pod at Atticus, you will play a pivotal role in bridging our marketing, product, and data layers. We prioritize speed, iterative experimentation, and accountability. We are seeking a backend-focused product engineer who excels in dynamic environments and can efficiently manage experimentation without leaving behind complications.This position emphasizes the development of systems that enhance Growth: ensuring seamless data flow between systems, managing experimentation infrastructure, marketing data pipelines, automated communications, and user identity management. If you have experience in these areas and desire to delve deeper, this is your opportunity.Additionally, you will collaborate closely with product and design teams to transform vague Growth hypotheses into clear, actionable tasks that can be executed swiftly and rigorously tested.Your ResponsibilitiesManage and enhance our data integration infrastructure, including data systems, marketing tools, customer communication platforms, and experimentation data flows.Create connections between Growth's external tools and internal systems.Work collaboratively with the Growth team to convert rapidly evolving priorities into well-defined engineering tasks.Strive for a balance between speed and system integrity, making strategic trade-offs and documenting your decisions.Engage across our entire product stack as necessary; while the focus is on backend work, we appreciate a generalist engineering approach.