Senior Back-end Software Development Engineer

Join Our Innovative TeamAt Rebuy, we aim to transform the shopping experience with intelligent, personalized solutions that impress customers worldwide. As a fully remote organization, we empower some of the fastest-growing direct-to-consumer brands such as Aviator Nation, Liquid Death, Magic Spoon, Blenders, Laird Superfoods, and Primal Kitchen, among others.We value ownership, motivation, and empathy, recognizing that each team member significantly influences the future of intelligent commerce. Our culture fosters collaboration, creativity, and a genuine passion for our work. We don’t just create exceptional technology; we cultivate enduring partnerships, a vibrant community, and a workplace people are excited to be a part of.Your Role and ImpactAs a Senior Back-End Software Engineer, you will take ownership of critical systems at Rebuy. Your main focus will be on our billing and payments infrastructure — the backbone that manages merchant charges, partner payments, and financial flows across our entire product ecosystem. This role involves complex financial engineering that requires a deep understanding of PHP and Go, as well as thoughtful architecture and decision-making that automated tools cannot replicate. Since merchant billing runs daily and affects real revenue, a comprehensive grasp of both technical and business perspectives is essential.In addition to billing, you'll expand your expertise across a wider platform portfolio, including the partner portal, data ETL pipelines, customer-facing APIs, and reporting infrastructure that fuels our business. A significant upcoming project is the migration from our legacy Code Igniter 2 codebase to Code Igniter 4, which is critical for increasing our enterprise market share. This migration will require hands-on PHP experience and cannot be postponed.You will not receive a long list of tasks on your first day; instead, you will be trusted to evolve in your role and will be rewarded for your contributions.Billing & Payments Architecture: Design and implement Rebuy’s centralized billing system that manages merchant billing, partner payments, and customer charges. Architect the integration layer that enables payment balances across Rebuy’s full suite of services. Tackle complex financial engineering challenges using PHP and Go at scale.Build Robust APIs: Develop secure, well-structured APIs in PHP and Go to facilitate billing events, payment processing, and more.

About DakotaAt Dakota, we are revolutionizing the global banking landscape with our cutting-edge platform designed for the modern business. Our mission is to empower enterprises to operate seamlessly on a global scale by integrating the best aspects of cryptocurrency and traditional finance. Established in 2024, Dakota has rapidly gained traction, serving numerous clients and handling billions in transaction volume annually.As a fully remote company since inception, Dakota boasts a talented and diverse team spread across North America and Europe. We foster a culture of ownership, prioritize customer satisfaction, and are dedicated to promoting economic freedom worldwide.Note: Dakota is an equal-opportunity employer, and we are currently hiring within the U.S., United Kingdom, Spain, and Portugal.About the RoleWe are seeking a skilled Senior Back-End Software Engineer to join our dynamic engineering team. In this role, you will play a pivotal part in designing and implementing the robust back-end architecture that supports our innovative blockchain-integrated banking platform. You will engage in impactful projects from day one, shaping our financial products and enhancing the customer experience. Depending on your strengths and our evolving business needs, you can pursue a path of technical specialization or expand into a broad engineering role across various domains.Tech StackGoogle Cloud Platform (GCP) for our cloud infrastructureKubernetes for managing our containerized microservicesGolang as our primary programming language for back-end servicesTypeScript for front-end applications, deployed via VercelPostgreSQL & TimescaleDB for robust data managementBuildkite for CI/CD and deployment processesGitHub for version control and collaborationSentry for error monitoring and Incident.io for incident managementQualificationsA minimum of 5 years of experience in software engineeringProficiency in Golang with a demonstrated ability to write clean, efficient codeA strong sense of ownership and the ability to lead engineering projects independentlyExceptional problem-solving skills and a proactive approach to challengesFamiliarity with modern software development practices and tools

Join our dynamic team at askfavor as a Senior Back End Software Engineer! In this pivotal role, you will be responsible for designing, developing, and maintaining scalable back-end systems that drive our innovative solutions. Collaborate with cross-functional teams to deliver high-quality software that meets the needs of our users. If you're passionate about technology and eager to make a significant impact, we want to hear from you!

Transforming Space into Earth's Transportation LayerAbout Us:At Inversion Space, we believe that the eras of humanity are often defined by the prevalent modes of transportation—from horse-drawn chariots to ocean-faring vessels and aircraft. Our mission is to usher in a new epoch characterized by global accessibility, unhindered by borders, and establish a seamless transit system from space to Earth. We are developing innovative re-entry vehicles capable of orbiting before executing precise landings back on Earth.Role OverviewAs a Senior Back-end Engineer at Inversion, you will be an integral member of our simulation team, responsible for designing, developing, and maintaining the architecture and server-side logic for applications that support our flight systems' simulation and testing environments. Your expertise will ensure the continuous integration and realistic testing of flight software and hardware. You will be pivotal in creating data management and self-service tools that foster rapid and repeatable development and deployment workflows, thus empowering our engineering teams to accelerate the development lifecycle and deliver our products to customers with unmatched speed and efficiency.Key ResponsibilitiesDesign, deploy, and uphold the server-side logic and infrastructure for applications that facilitate simulation workflows, including high-performance computing (HPC), software-in-the-loop (SIL) testing, and hardware-in-the-loop (HIL) testing.

Join Newsela as a Senior Back End Software Engineer and play a crucial role in shaping the future of education. As a part of our innovative tech team, you will work on developing scalable and robust back-end systems that enhance the learning experience for students and educators alike.Your expertise in back-end technologies will help us deliver high-quality, efficient, and maintainable code. Collaborate with cross-functional teams to design and implement new features, ensuring performance and security are at the forefront of all developments. You will also mentor junior engineers, contributing to their growth and the overall success of our engineering team.

Join Bask Health as a Senior Back-End Software Engineer, where you will collaborate closely with our CEO and CTO to architect and develop the software infrastructure that powers telehealth services.Our cutting-edge serverless platform leverages Next.js and SST to create a robust multi-tenant application. Proficiency in these frameworks, along with Typescript and Javascript, is essential for this role.Your Responsibilities• Develop, design, and deliver new services throughout the entire development lifecycle. Write clean, well-tested code using a modern tech stack. Create libraries and frameworks that facilitate rapid development and enhance user experience.• Collaborate with the product team to make informed architectural and design decisions. Participate in stand-ups, code reviews, retrospectives, and contribute to cultivating an engineering culture focused on simplicity, intuition, and impactful user experiences.• Embrace the role of an engineering generalist: from server and database development to API integration and UI implementation, you will own significant portions of the codebase and projects.• Innovate from scratch: this is a unique opportunity to build and scale services while contributing to product strategy and development.We pride ourselves on being a highly collaborative team.

Role overview The Senior Back End Software Engineer position at evertune is based in Seattle. The role centers on developing and maintaining the core back-end systems that power the evertune platform. This work involves designing solutions that help the platform run smoothly and reliably. Collaboration is a key part of the job. The engineer will work closely with other experienced team members to ensure that services are scalable and dependable. Improving the experience for users remains a top priority throughout the development process. What you will do Design, build, and maintain back-end systems for the evertune platform Work with a skilled team to deliver reliable and scalable services Focus on solutions that enhance user experience Location This position is located in Seattle.

Why Choose Tenna?At Tenna, we proudly originate from the construction industry. Our unique insights have allowed us to create a groundbreaking platform that transforms the management of construction equipment fleets. We offer cutting-edge solutions that help our clients effectively manage and monitor their assets, including both heavy and light equipment, extensive fleets, tools, and materials. We are convinced that the greatest potential lies before us and that each day presents new opportunities for discovery and improvement. The core values that define the Tenna Team are an obsession with quality, relentless grit, a commitment to continuous learning, collaborative problem-solving, and an overall awesomeness. Do these values resonate with you? Join us in empowering our customers to manage their diverse assets on a unified platform, accessible anytime and anywhere. Position OverviewWe are on the lookout for a Senior Back-End Software Engineer to lead the advancement of our connected equipment solutions. The ideal candidate will be an innovative thinker, an adept communicator, and a skilled problem solver with experience in transformative projects, and a strong passion for the IoT revolution. As part of our collaborative development team, you will work on a sophisticated and evolving platform, focusing on designing and implementing new features, writing state-of-the-art code, and improving the performance and scalability of Tenna’s products.

At Epistemix, our software engineers embody a passion for excellence and are dedicated to transforming innovative ideas into impactful software solutions. You thrive on the challenge of creating groundbreaking applications that tackle significant issues.To excel in this role, you must be a curious and driven problem-solver, eager to design and implement high-quality, well-architected systems. Your commitment to excellence fuels your desire to deliver straightforward solutions for intricate challenges. Understanding that multiple approaches exist for every problem, you engage in collaborative discussions to identify the optimal solution.About EpistemixEpistemix is at the forefront of helping organizations predict outcomes and manage risks through behavioral modeling. Our flagship products, Populus and Polaris, deliver realistic, high-resolution synthetic population data and advanced data science simulations for strategic scenario planning. These tools empower clients across healthcare, consumer industries, insurance, and governmental sectors to minimize uncertainty and make informed decisions, even when faced with limited data.As we approach our Series B financing, we are expanding our team with key positions and entering an exhilarating phase of growth and innovation. Join us in merging cutting-edge technology with a mission-driven focus to positively impact the world.

Join Waymo as a Senior Back-End Software Engineer in our Simulation team, where you will play a vital role in building and enhancing our cutting-edge autonomous driving technologies. You will be responsible for designing and implementing robust back-end systems that support our simulation environments, helping to ensure the safety and efficiency of our self-driving vehicles.Your contributions will directly impact the future of transportation and make a difference in how people move through the world.

Join our dynamic team at Colibri as a Senior Back End Software Engineer, where you will play a pivotal role in shaping our server-side applications and database systems. You will create efficient and high-quality code, while also enhancing the performance and functionality of our existing solutions.Develop and optimize server-side applications and databases to ensure seamless user experiences.Design and implement web services and APIs utilized by front-end developers for both web and mobile platforms.Collaborate closely with front-end developers and other team members to define objectives and create cohesive code that elevates the overall user experience.Clearly define and communicate technical and design requirements to ensure alignment across teams.Build robust, reusable code that contributes to our future development initiatives.Conduct unit testing, perform code reviews, refactor existing code, and actively seek to improve application performance. Maintain thorough documentation of designs and code.

Join our innovative team at Systems Technology Research as a Senior Software Engineer or Back-End Developer. In this role, you will leverage your expertise to design, develop, and implement high-quality software solutions that meet our clients' needs. You will work closely with cross-functional teams to deliver robust applications, ensuring optimal performance and security.

Join our innovative team at Systems Technology Research as a Senior Software Engineer / Back-End Developer. In this role, you will be responsible for designing, developing, and maintaining robust back-end systems that power our cutting-edge technology solutions. You will collaborate with cross-functional teams to deliver high-quality software that meets the needs of our clients.

To ensure the safety of all applicants, we advise you to be vigilant during your job search. Quanata will only contact you via email from the domain quanata.com. Please disregard any messages from other domains as they may pose a security risk.About UsAt Quanata, we are committed to creating a better world through innovative, context-based insurance solutions. Our dedicated team is driven by a passion for developing cutting-edge technologies and digital products. With the support of our leading insurer, State Farm, we combine elite Silicon Valley talent with forward-thinking strategies.Learn more about our mission and innovations at quanata.com Our Team Our world-class team consists of data scientists, actuaries, engineers, designers, and marketers, all from esteemed companies in Silicon Valley and beyond. Together, we are shaping the future of insurance through context-based solutions and exceptional user experiences. We understand that our success is driven not only by technology but by attracting and retaining talented individuals who make a measurable impact.The RoleWe are looking for a Senior Back End Engineer to develop and improve the essential services that support our company’s operations. You will work on systems managing core financial and underwriting functions, coordinating dynamic machine learning models to enhance our industry-leading policy management solution and optimizing application architecture to ensure peak performance and reliability for our customers.Your Day-to-Day ResponsibilitiesDesign and implement both client-facing and internal APIsOrchestrate data flows between backend systemsCreate and manage database schemasDevelop automated test suitesLead end-to-end design and implementation of significant product featuresEvaluate and integrate with third-party services and toolsMentor mid-level and junior engineers on your teamAbout YouBachelor’s degree or equivalent experience5-7 years of professional backend engineering experienceProficient in modern programming languages such as Java, Python, or GoStrong understanding of database management systems and API designExperience with cloud services and deployment strategiesExcellent problem-solving skills and a collaborative mindset

Key Responsibilities:Take a pivotal role in designing and executing our flagship software product.Develop prototypes and iterate on new features that integrate cutting-edge AI technologies.Establish best practices in technology and explore future enhancements for our platform.Mentor current and upcoming members of our engineering team.Analyze high-quality datasets from Fortune 500 companies to generate valuable insights for our clients.

Join our innovative team as a Back End Software Engineer, where you will play a crucial role in developing robust and scalable server-side applications. You will collaborate with cross-functional teams to enhance user experiences and optimize performance. If you are passionate about technology and looking to make a significant impact, we want to hear from you!

Join our innovative team at Jobs for Humanity as a Senior Lead Software Engineer specializing in Back End development. You will play a critical role in designing and implementing robust software solutions that drive our mission of promoting inclusivity and support for diverse communities.Your expertise will guide our engineering efforts, ensuring high performance and responsiveness to requests from the front-end. You will collaborate closely with cross-functional teams to deliver exceptional products that meet the needs of our users.

Join Kustomer as a Senior Back End Software Engineer specializing in AI, where you'll be at the forefront of developing innovative solutions that enhance customer experiences. As part of our dynamic team, you will design and implement robust back-end systems that leverage artificial intelligence to provide seamless service.In this role, you will collaborate with cross-functional teams, ensuring the integration of AI technologies into our products while maintaining high performance and reliability. You'll have the opportunity to influence our technical direction and contribute to the evolution of our platform.

SECURITY CLEARANCE: TS/SCI with both Polygraphs is required.POSITION: Senior Back-End Software Engineer (AE, L4)REQUISITION: NIN-AE4-30.051925LOCATION: Laurel, MarylandSEAT LOCATION: EmersonJOB DESCRIPTION:Join our Secure the Enterprise initiative, where you will play a pivotal role in transforming the current manual system security evaluation and authorization process into an automated, efficient, and continuously monitored framework. This new model will enhance project lifecycle management through streamlined processes, approvals, and comprehensive network data collection.KEY RESPONSIBILITIES:As a Senior Back-End Software Engineer, you will be responsible for the design, development, testing, deployment, and ongoing maintenance of various Python-based REST endpoints, microservices, and data model management capabilities. Utilizing Django and Flask frameworks, you will interact with data models stored in MariaDB or MongoDB, delivering data in JSON format to user interface front-ends upon request.