Backend Software Engineer for Labeling Systems

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 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.

Self Financial is an innovative, venture-backed FinTech company dedicated to enhancing economic inclusion and fostering financial resilience. Our mission is to empower individuals to build credit and save effectively.We seek passionate individuals who are eager to confront challenges, devise solutions, and improve the financial landscape for the communities we serve.Our team is committed to redefining the credit industry by providing accessible tools that enable people to take charge of their credit. Achieving our mission necessitates deep collaboration across teams to ensure that our products reach those who will benefit most, particularly the over 100 million Americans with little or no credit.We value diversity and are dedicated to fostering an inclusive environment for all employees. We actively seek to recruit, develop, and retain exceptional talent from a diverse candidate pool.About the Role We are on the lookout for a Senior Backend Software Engineer to enhance our Payments (PayPort) platform, which underpins vital business operations and revenue-generating processes. This position is crucial for ensuring the reliability, scalability, and continuous development of payment systems and associated services. As a senior member of our team, you will play a key role in both routine operations and strategic initiatives, including payment integrations and financial reporting capabilities. You will collaborate cross-functionally with product, infrastructure, and business stakeholders to deliver high-quality, resilient solutions. What You’ll Do:Payment Platform Ownership Support and maintain the PayPort payment platform and its services Ensure system uptime, reliability, and performance of critical payment workflowsMonitor, troubleshoot, and resolve production issues affecting payment systems Development & Delivery Design, develop, and improve payment processing capabilities and integrations Create and support bank and bureau reporting functionality Contribute to scalable, secure, and high-performance software solutions Engage in all phases of the software development lifecycle to ensure successful delivery of projects.

Travoom is looking for a Senior Rust Backend Engineer with a focus on distributed systems. This position is based in Austin and centers on designing, developing, and refining backend architecture to support a growing user base. Role overview This role centers on building scalable and reliable backend systems using Rust. The work involves close collaboration with engineers and product stakeholders to ensure the architecture meets both technical and business needs. What you will do Design and develop backend components in Rust Optimize distributed systems for performance and reliability Work with team members to deliver solutions that scale as the user base grows Requirements Strong experience with Rust programming Background in distributed systems design and implementation Ability to collaborate with engineers and product stakeholders

Role overview rdccareers seeks a Senior Staff Software Engineer with a focus on backend development in Austin, Texas. This role centers on designing, building, and maintaining backend systems that power the company’s core applications. The position calls for deep technical expertise and a collaborative mindset. What you will do Design, develop, and maintain backend infrastructure for major products Work with engineering, product, and other teams to deliver dependable software Contribute to key architectural decisions that influence system direction Mentor junior engineers and help shape technical strategy Promote backend best practices throughout the team Find ways to improve scalability, performance, and overall system quality Requirements Significant experience with backend technologies and designing complex systems Proven ability to collaborate with cross-functional teams Experience mentoring and guiding engineers at different levels Dedication to process improvement and delivering high-quality software

At SpyCloud, we are dedicated to creating a safer online environment by disrupting criminal activities across the internet. Our innovative solutions are designed to counteract cyberattacks, safeguarding over 4 billion accounts globally. In this rapidly evolving cybersecurity landscape, joining SpyCloud positions you at the forefront of combating cybercrime, making it an exceptional place to advance your career.We invite applications for the role of Senior Software Engineer, focusing on developing and managing backend systems that operate at a massive scale. This position is ideal for individuals passionate about performance, reliability, and crafting systems capable of processing substantial amounts of data seamlessly.As part of our team, you will handle tens of billions of records, including dark web intelligence, to help organizations defend against stolen credentials, malware, and compromised devices. The systems you develop will be integral to our platform, relied upon daily by security teams who prioritize speed, accuracy, and reliability.This is a hybrid position based in Austin, TX, allowing flexibility for remote work while also encouraging in-person collaboration with our team.

As the leading platform trusted by real estate professionals, Realtor.com® has been revolutionizing online real estate for more than 25 years, bridging the gap between buyers, sellers, and renters with reliable insights and expert guidance. Our comprehensive toolkit significantly influences the real estate industry while simplifying the home-buying journey for consumers, ensuring an intuitive user experience that empowers informed decision-making.We invite you to join our mission in making it easier for individuals to find their way home by breaking down barriers, fostering connections, and instilling confidence through professional advice.We harness cutting-edge tools to expedite problem-solving. You will be expected to adeptly use AI coding assistants and large language models (LLMs) to enhance development speed, create boilerplate code, and resolve intricate debugging challenges. This position necessitates sharp judgment in assessing the security, performance, and accuracy of AI-generated outputs. Comfort with integrating AI tools into your daily operations is crucial, allowing you to concentrate on impactful architectural and strategic engineering tasks.Who We AreAt Realtor.com®, our mission is to simplify the processes of buying, selling, and living in homes, making it a rewarding experience for everyone. Our platform attracts millions of users each month across both web and mobile channels.The Notifications team, part of the Consumer segment, manages the centralized notification platform that delivers timely and relevant communications to our users through push notifications and emails.Our technology stack includes Kafka, AWS EKS and Lambda, SQS, MongoDB, Redis, and AWS Secrets Manager, with a strong emphasis on observability, cost-effectiveness, and operational excellence.About The RoleWe are seeking a Senior Backend Software Engineer to join the Notifications team to help design, develop, and maintain the next generation of our notification platform.In this role, you will:Take ownership of core backend services that drive notification preferences, home alerts, and notification delivery for initiatives like Project Columbus (Updated Notification Preferences and Alerts by Geo).Engage with event-driven architectures, real-time delivery pipelines, and storage systems that handle notification history and campaign traffic at scale.Collaborate closely with CRM Marketing, Search, and Mobile teams to ensure reliable, observable, and cost-effective notification experiences.

Travoom seeks a Senior Rust Backend Engineer in Austin to help build and maintain the distributed backend systems that power its main applications. This position centers on designing software that can handle demanding workloads and scale reliably. The team values engineers who enjoy tackling complex technical problems and have a strong background in Rust. What you will do Design and implement backend systems using Rust Create distributed architectures to support high-performance needs Collaborate with fellow engineers to deliver software that is both reliable and scalable Requirements Deep proficiency in Rust Hands-on experience building distributed systems Skill in designing backend solutions for applications with heavy or complex workloads

Join Our Innovative TeamAt AVRIDE, we are revolutionizing the future of transportation with our autonomous driving technology. Our focus on safety and efficiency sets us apart in the industry as we develop self-driving taxis and delivery robots. With operational facilities in both the United States and Japan, our agile and skilled engineering team is dedicated to making a substantial impact in the autonomous sector. Be a part of our dynamic startup culture where your contributions matter.Role OverviewAs a pivotal Backend Engineer on our Autonomous Delivery team, you will be responsible for constructing and maintaining the essential backend systems that bridge our cloud platform with autonomous vehicles. Your expertise will help us build robust Go services, integrate various internal and external systems, and guarantee consistent performance even in challenging network conditions. Your collaboration with infrastructure and robotics teams will be crucial as you troubleshoot production issues and enhance the tools and APIs that power our delivery platform at scale.

Join Bumble Inc. as a Lead Backend Software Engineer and play a pivotal role in shaping the core systems that enhance the Bumble Dating experience. This position is perfect for seasoned engineers who have a track record of building and delivering comprehensive features. You should be comfortable taking ownership of projects and eager to make significant contributions to our technical architecture while also mentoring junior team members. Collaborate with cross-functional teams to produce high-impact results in a dynamic and fast-paced environment.

Telnyx develops technology to enable global connectivity. The company operates a private, multi-cloud IP network and delivers edge connectivity through APIs. With a focus on automating manual processes and addressing real-world challenges, Telnyx continues to invest in technology and team growth, backed by strong financial performance. Role overview The Senior Java Software Engineer joins the backend team managing a distributed, highly available data pipeline. This platform powers essential Telnyx products such as Voice, Messaging, and Wireless. The system runs on the Telnyx private backbone and is designed to be cloud-agnostic, processing thousands of messages per second. The engineering team oversees more than 30 microservices, all containerized with Docker and deployed across multiple regions in the U.S. and Europe. Deep expertise in Java Core is especially valued for this position. Locations Sao Paulo, Brazil Austin, Texas Argentina Dublin, Ireland What you will do Design, build, and maintain backend systems using Java Develop and support distributed, cloud-agnostic data pipelines Contribute to a microservices architecture with Docker Help scale systems that handle large volumes of messages Requirements Senior-level experience with Java Core Strong understanding of distributed systems Background in microservices and Docker Comfort working with a geographically distributed team Learn more Telnyx Private Network Edge Connectivity

Elevate Your Career with Zynga!At Zynga, we unite individuals through the joy of gaming. As a leading global force in interactive entertainment and a proud subdivision of Take-Two Interactive, our games have achieved over 6 billion downloads—bringing together players from more than 175 countries through enjoyable, strategic, and friendly competition.Our diverse portfolio encompasses thrilling casino experiences, epic strategy games, challenging puzzles, and engaging social word games. Some of our beloved titles include FarmVille™, Words With Friends™, Zynga Poker™, Game of Thrones Slots Casino™, Wizard of Oz Slots™, Hit it Rich! Slots™, Wonka Slots™, Top Eleven™, Toon Blast™, Empires & Puzzles™, Merge Dragons!™, CSR Racing™, Harry Potter: Puzzles & Spells™, Match Factory™, and Color Block Jam™—and many more!Founded in 2007 and headquartered in California, our teams stretch across North America, Europe, and Asia, collaboratively crafting unforgettable gaming experiences. Whether you're spinning, strategizing, matching, or competing, Zynga is the intersection of fun and innovation—where your career can truly flourish.Join us and become a part of the play!Position Overview:Become a vital member of Zynga's Central Technology team, where we make a significant impact across all company games! Our focus is on shared client and server technology that powers the core gameplay experience. We seek exceptional engineers who are passionate about technology and eager to collaborate in a team with diverse strengths. As a Principal Software Engineer, you will join a talented group of software engineers dedicated to designing and maintaining Zynga's core Payments platform, ensuring seamless integration with app stores, consoles, and payment processing providers. You will play a pivotal role in architecting, building, and advancing the next-generation framework for our games.

As the leading online real estate platform trusted by professionals, Realtor.com® has been revolutionizing the industry for over 25 years. We connect buyers, sellers, and renters with valuable insights and expert guidance to help them find their dream home. Our comprehensive suite of tools not only empowers consumers in making significant life decisions but also enhances the overall real estate experience.Join us in our mission to help more people find their perfect home by breaking down barriers and fostering connections through expert advice.We prioritize the use of advanced tools to solve challenges efficiently. In this role, you will adeptly utilize AI coding assistants and LLMs to boost development speed, generate boilerplate code, and navigate complex debugging scenarios. This position demands critical assessment abilities to validate AI-generated outputs for security, performance, and accuracy. You should seamlessly integrate AI tools into your workflow to minimize repetitive tasks and concentrate on impactful architectural and strategic engineering challenges.As a Staff Software Engineer at Realtor.com, you will serve as a technical leader addressing complex and ambiguous challenges within the team. Your responsibilities will include:Guiding the team in balancing immediate requirements with long-term business success.Providing comprehensive design guidance and influencing decisions across teams.Facilitating trade-offs and promoting code reuse where feasible.Collaborating with Product Management on project concepts and engaging with customers, stakeholders, and colleagues.Exhibiting exemplary coding practices and work ethic.Mentoring team members through active participation in code reviews, design discussions, and planning sessions.Your Role Will Include:Leading design and implementation efforts for complex and ambiguous projects.Offering architectural guidance to teams.Creating high-quality, scalable, and reliable solutions.Working collaboratively with cross-functional teams including Product Managers, Designers, Analysts, and Engineers.Mentoring and developing fellow engineers.Exploring and prototyping new technologies to enhance our offerings.

Realtor.com has supported real estate professionals, buyers, sellers, and renters for over 25 years. The company connects people with reliable insights and expert guidance, aiming to simplify the home search and decision-making process. The mission centers on helping individuals move toward home ownership by removing barriers, building connections, and providing expert support at every step. The RDC Next team builds new solutions within the real estate ecosystem. Their work improves how industry professionals and consumers connect, always focused on making the buying and selling process easier. Role overview The Staff Backend Software Engineer provides technical leadership across the backend platform. This position helps shape core systems and sets the direction for foundational technology at Realtor.com in Austin, Texas. Main responsibilities Product collaboration: Work with Product Managers to analyze requirements, turn them into technical plans, and ensure solutions meet both user needs and technical constraints. Systems architecture: Lead the design, development, and testing of scalable content ingestion pipelines and APIs that improve the experience for consumers and real estate agents. AI platform strategy: Guide the integration of machine learning models and agentic AI into production workflows to advance Realtor.com’s AI capabilities. Third-party integrations: Architect solutions for seamless data exchange with external real estate partners and services. Notification systems: Build and scale systems that deliver real-time updates to millions of users. Operational standards: Set benchmarks for infrastructure, observability, and monitoring to maintain reliability and performance.

As the leading platform trusted by real estate professionals, Realtor.com® has been revolutionizing online real estate for over 25 years. We seamlessly connect buyers, sellers, and renters with invaluable insights and expert guidance to help them find their ideal home. Our comprehensive suite of tools not only transforms the real estate industry but also simplifies the home-buying journey for consumers, ensuring a user-friendly experience that empowers informed decision-making.Join us in our mission to facilitate homeownership by breaking barriers, fostering meaningful connections, and instilling confidence through expert guidance.Our commitment to utilizing cutting-edge tools enables us to tackle challenges efficiently. You will leverage AI coding assistants and LLMs to enhance development speed, create boilerplate code, and resolve intricate debugging issues. This position demands critical evaluation of AI-generated results to ensure security, performance, and accuracy. You should be adept at incorporating AI tools into your workflow, minimizing repetitive tasks to concentrate on impactful architectural and strategic engineering challenges.Your Responsibilities:You will architect, develop, and manage backend services and data integrations that drive personalized marketing experiences across CRM and Digital Marketing channels at Realtor.com®. Your work will span the marketing technology stack, linking internal data platforms with tools that activate, measure, and optimize campaigns. You will guarantee the reliability, observability, and scalability of data pipelines, ensuring millions of users receive timely and relevant messages.Design, develop, and maintain backend services and data integrations that are secure, observable, and cost-effective, utilizing modern cloud patterns on AWS.Collaborate with data platform teams on the Snowflake and Kafka data platforms (both streaming and batch) to ensure reliable data collection, processing, and access for near real-time marketing and analytics applications.Contribute to streaming pipelines and consumers (e.g., Kafka/MSK) and batch workflows supported by Snowflake/DBT/Airflow/Hightouch, focusing on accuracy, performance, and operational excellence.Implement and enhance CI/CD pipelines on the company’s deployment platform (CircleCI, GitHub + Argo), promoting paved-path adoption, test automation, and safe deployment.

About Base PowerBase Power is revolutionizing the energy landscape in America. We are dedicated to reimagining the essential infrastructure of our society—electricity—by establishing a comprehensive network of distributed batteries. This initiative aims to transform the current fragile and centralized grid into a robust and plentiful system. Our team consists of engineers, operators, and creative thinkers who are tackling some of the most intricate, interdisciplinary challenges of our era.About the RoleAs part of Base Power, you will contribute to the development of BaseOS, the operating system that drives our entire business operations. From coordinating distributed energy fleets to automating field deployment and managing customer service at scale, BaseOS serves as the digital backbone of our mission to become the leading power company in America.In your role as a backend software engineer, you will play a pivotal part in designing and scaling this critical system. Your contributions will influence diverse aspects of the company, including powering homes, guiding deployment teams, optimizing manufacturing processes, and enabling real-time energy management.Your ResponsibilitiesCore System Development: Architect and implement backend services and APIs that constitute the foundation of BaseOS.Full Stack Ownership: Create high-performance, reliable applications using Golang and Python, deployed in modern cloud environments (primarily AWS).Infrastructure Automation: Utilize Terraform for infrastructure as code management and Temporal for orchestrating complex deployment workflows.Cross-Functional Collaboration: Partner with various teams in deployment, hardware, and operations to address multifaceted challenges spanning software, logistics, and infrastructure.Impact-Driven Solutions: Every line of code you write will contribute to a transformative change in the energy grid that powers our communities.

At Self Financial, we are a venture-backed FinTech company focused on enhancing economic inclusion and financial resilience. Our mission is to empower individuals to build credit and savings, fostering a brighter financial future for all.We seek passionate individuals eager to tackle challenges and improve the financial landscape for the communities we serve. Our dedicated team is committed to disrupting the credit industry by providing accessible tools that enable individuals to take charge of their credit journey.Join us in our mission to reach over 100 million Americans who lack adequate credit access. We value diversity and are dedicated to cultivating an inclusive environment for all our team members, striving to recruit and retain talented individuals from varied backgrounds.About the RoleAs a Staff Backend Software Engineer on our Consumer Verticals Card Team, you will play a crucial role in providing our users with a fair credit card experience tailored to their unique needs, supporting them throughout their credit-building journey. Your primary focus will be on writing clean, effective code, managing it from inception to deployment. You will collaborate directly with Lead Engineers, Architecture, and Product Managers, alongside our talented team of Professional Engineers.Impactful Teams, Valued Individuals:At Self Financial, we believe in empowering our talented team members to solve challenges. Our teams consist of skilled software engineers involved in all aspects of our creation process, including systems design, solution architecture, planning, and execution. We celebrate initiative, creativity, and determination, encouraging individuals to make a direct impact on our mission.What You’ll Do:Develop features that enhance our credit-building products and banking core systems.Create services and infrastructure that deliver essential functions at large scale.Collaborate closely with Product Managers to develop tools and systems necessary for servicing our financial products to a diverse customer base.

Be aware: Zello never requests sensitive information such as bank details or checks during hiring. All authentic communication comes from the zello.com domain. Questions or concerns? Contact recruiting@zello.com. Zello builds a voice-first communication platform that supports over 175 million users worldwide. The company’s push-to-talk technology helps frontline workers, first responders, and teams stay connected and productive, handling 9 billion messages each month. Zello’s mission centers on supporting critical communication and collaboration for those who need it most. The backend services team at Zello manages the distributed systems powering every conversation on the platform. As the third engineer on this close-knit team, the Senior Back End Engineer in Austin, Texas will have direct production responsibility for essential services, working without layers of management between their work and its impact. What you will do Act as a senior individual contributor on the backend services team, managing production operations for distributed systems at real-time scale. Join on-call rotations for Zello’s most critical infrastructure, lead incident responses, develop runbooks, and drive sustainable improvements after incidents. Build and expand observability where needed, set service level objectives (SLOs), and instrument services using Grafana and Loki to shift the team toward proactive reliability. What success looks like after one year Full production ownership of at least one key service, including on-call, SLOs, incident response, and measurable reliability improvements (such as fewer P0 incidents or faster recovery). Broader observability coverage through Grafana and Loki dashboards and alerting, helping the team move from reactive to proactive on reliability. Delivery of at least three major enhancements in reliability, performance, or system architecture. Meaningful contributions to "backend 2.0," Zello’s rearchitecture initiative toward an AI-native engineering approach.

Join Stanley Consultants, a renowned global consulting engineering firm, where our commitment to culture, values, and ethical practices sets us apart. We prioritize client experience while tackling complex challenges to foster a sustainable and interconnected world. As we adapt to the ever-evolving landscape, we integrate cutting-edge technology, innovation, and resiliency practices into our work. With over a century of service in the energy, federal government, transportation, and water sectors, our efforts have significantly enhanced lives and shaped the infrastructure that connects communities. Being an employee-owned organization, we adopt a People First approach, ensuring that your voice matters, your growth is prioritized, and your success contributes to our collective achievements. We offer flexible work arrangements, competitive compensation, comprehensive benefits, and a supportive community atmosphere, paving the way for a fulfilling and long-term career!As a Senior Transportation Engineer in our Austin office, you will lead engineering initiatives on highway projects, encompassing roadway studies and design, drainage and utility systems, preparation of construction documents, cost estimations, project scheduling, and managing large, intricate highway corridors.This role presents thrilling challenges and opportunities to expand our Louisiana program. You will oversee project scope, schedule, cost, quality, and resources, mentor junior engineers, aid in transportation market business development, and engage with professional organizations and technical committees.