Senior Backend Engineer

Twindo is pioneering the transformation of the remodeling, architecture, and interior design sectors through innovative AI and computer vision technologies. Our LiDAR-enabled iPhone and iPad scans generate accurate 3D representations of homes in mere minutes, delivering interactive models with precise measurements. Our proprietary technology converts these s…

Join Upwork, the world’s leading work marketplace, where we empower a diverse range of clients from innovative startups to over 30% of Fortune 100 companies. Our platform fosters collaboration between companies and talented professionals, unlocking their full potential.Last year, our vibrant community of skilled professionals facilitated over $3.8 billion worth of work through Upwork, allowing them to take charge of their careers by pursuing work they are passionate about.You will be part of Upwork’s Hybrid Workforce Solutions (HWS) Team, a global network of experts dedicated to supporting Upwork’s business initiatives. We are proud to have our HWS team members distributed across various locations worldwide.We are seeking a passionate and experienced Senior Backend Engineer with a strong background in Python, JavaScript, and server-side development, along with SQL skills and AWS expertise, to contribute to the Upwork Data Platform Backend.The Intelligent Data Platform team is looking for a Senior Backend Engineer to enhance the Snowflake Data Platform. This is a hands-on individual contributor role, focused on constructing, managing, and automating backend services that facilitate data ingestion, orchestration, governance, cost optimization, and compliance for a platform utilized by hundreds of internal users.

About RemoteRemote is addressing the most pressing challenge for modern organizations—managing global employment compliantly and effortlessly. We empower businesses of all sizes to hire, compensate, and oversee international teams seamlessly. With a focus on innovation and a forward-thinking culture, our dedicated team tackles ambitious problems asynchronously, spanning six continents (we're just missing Antarctica!). All of our roles are fully remote.Innovation is one of our core values, and we have integrated automation and AI capabilities into every role.We invite every member of the Remote team to contribute their skills, experiences, and cultures to help us develop a world-class HR platform. If you are enthusiastic, inquisitive, driven, and ambitious, we encourage you to apply and help shape the future of work!The PositionYou will join a collaborative team of engineers specializing in Frontend, Backend, SRE, and QA, organized into cross-functional development teams dedicated to specific verticals.This position is open across various teams, and we will determine the specific team you will join during the interview process based on business needs and your preferences.Regardless of the specific team, you will focus on developing tools, APIs, and integrations for one of our products.Our backend utilizes Elixir and Phoenix, with a Postgres database. We employ React and Next.js for our frontend development. GitLab serves as our version control and CI/CD solution. Our applications are hosted on AWS, and we rely entirely on CI for deployments, deploying multiple times daily. Check out our Engineering Rulebook for more details.What This Role Offers YouEngaging and meaningful challenges—solving these will enable individuals and businesses to operate in any country worldwide.The chance to create a significant impact within the company—as we are still early in our journey, every change you implement today will have a multiplier effect as the company grows.Numerous opportunities for personal and professional growth.

Remote builds a platform that helps organizations manage global employment, making it easier for businesses to recruit, pay, and oversee international teams. The company’s fully remote structure brings together team members from six continents, each contributing unique perspectives to the ongoing development of Remote’s HR platform. Automation and AI are woven into daily work, supporting efficient and compliant operations. Role overview The Senior Backend Engineer joins a cross-functional group that includes Frontend, Backend, SRE, and QA specialists. Teams are organized by product vertical, and the specific assignment will be determined during the interview process based on both business needs and personal interests. The main focus of this role is building tools, APIs, and integrations for one of Remote’s core products. Key technologies Elixir and Phoenix for backend development Postgres as the primary database React and Next.js on the frontend GitLab for version control and CI/CD AWS for hosting Continuous integration enables frequent deployments throughout the day. For more detail on engineering practices, see the Engineering Rulebook. What this job can offer Challenging projects that support global collaboration between businesses and individuals Opportunities to make a direct impact as the company grows A supportive and flexible environment that values both personal and professional growth Location This is a fully remote position open to candidates anywhere in the world.

About RemoteRemote is at the forefront of addressing one of the most significant challenges faced by modern organizations: managing global employment compliantly and efficiently. We empower businesses of all sizes to hire, compensate, and oversee international teams seamlessly. Driven by our core values and a forward-thinking work culture, our dedicated team tackles ambitious challenges asynchronously from various locations worldwide. Our team members span across six continents (with Antarctica yet to join!), and all our roles are completely remote.With innovation as one of our foundational values, we have integrated automation and AI capabilities into every role’s requirements.We invite every member of the Remote team to contribute their unique talents, experiences, and cultures to help us create a best-in-class HR platform. If you are enthusiastic, inquisitive, driven, and ambitious, join us and help shape the future of work! Apply now!The PositionYou will become a part of a collaborative team of engineers specializing in Frontend, Backend, SRE, and QA. We are structured into cross-functional development teams dedicated to specific areas.This position is available across several teams, and we will identify the exact team you will join during the interview process, considering both business needs and your preferences.Regardless of the team, your focus will be on developing tools, APIs, and integrations for one of our products.Our backend utilizes Elixir and Phoenix, alongside a Postgres database. For our front end, we employ React and Next.js. We use GitLab for version control and CI/CD solutions. Our applications are hosted on AWS, and we rely completely on our CI for deployments, executing multiple deployments daily. For more details, refer to our Engineering Rulebook.What We OfferEngaging and meaningful challenges that enable individuals and businesses to operate globally.The chance to make a substantial impact as we are still in the early stages of our journey; every change you implement today will be magnified by the company's growth.A plethora of freedom and flexibility in your work, promoting a healthy work-life balance.

Join Enode and Transform the Energy LandscapeThe global energy consumption landscape is evolving rapidly, yet the transition to renewable sources is lagging. At Enode, we believe that the key to unlocking this potential lies in smarter, more interconnected solutions.Our platform is at the forefront of the green energy revolution, facilitating the development of cutting-edge applications that connect and optimize energy devices through our advanced APIs. By integrating everything from electric vehicles to heat pumps, we empower users to harness renewable energy more effectively.Partnering with leading energy companies and innovative green tech firms, we provide instant access to over 250 million consumers, enabling them to adopt sustainable energy practices.In light of the urgent need for decarbonization, our mission is more critical than ever. With the support of prominent investors such as Y Combinator, Lowercarbon Capital, and Creandum, we are just getting started, and we invite builders and innovators to join our passionate, mission-driven team.Your RoleWe are seeking a dedicated Mid-Level Backend Engineer to enhance the reliability, observability, and efficiency of our Electrical Vehicle & Chargers (EVC) platform. In this role, you will focus on fortifying Enode's connectivity layer, which integrates various EV chargers, vehicles, and OEM platforms into a seamless product experience for our customers.This position is distinct from infrastructure or DevOps roles; you will be part of the EVC Platform team, responsible for maintaining and expanding the product-level platform that connects users to energy devices through robust and high-quality integrations.Your contributions will include developing new integrations, addressing bugs, automating processes, refining monitoring and alerting systems, and enhancing the overall resilience of our API as we scale to incorporate additional OEMs and partners.Our technology stack primarily comprises a TypeScript codebase alongside React, Node.js, AWS, Docker, and PostgreSQL, structured using CDK/CloudFormation.

About RemoteAt Remote, we are addressing one of the most significant challenges modern organizations face—navigating global employment with compliance and ease. Our platform empowers businesses of all sizes to recruit, compensate, and manage international teams seamlessly. Emphasizing our core values and forward-thinking culture, our team is dedicated to tackling ambitious challenges asynchronously across the globe. Our diverse workforce spans six continents (Antarctica is the last frontier!), and every role is fully remote.Innovation is at the heart of our operations, driving us to integrate Automation and AI capabilities into every position.We invite every member of the Remote team to contribute their unique talents, experiences, and cultural insights to help us create a world-class HR platform. If you are energetic, inquisitive, driven, and ambitious, join us in shaping the future of work! Apply today!The PositionYou will collaborate with a team of engineers across Frontend, Backend, SRE, and QA. Our structure includes cross-functional development teams dedicated to specific verticals.This role is available across various teams, and we will determine the specific team during the interview process based on business needs and your preferences.Regardless of the team assignment, you will focus on developing tools, APIs, and integrations for our product offerings.Our backend technology stack includes Elixir and Phoenix, paired with a Postgres database. For the frontend, we utilize React and Next.js. We rely on GitLab for version control, issue tracking, and CI/CD solutions. Our applications are hosted on AWS, and we practice continuous integration for multiple daily deployments.What This Role Offers YouEngaging and impactful challenges—your solutions will enable individuals and businesses to operate globally.A chance to make a significant impact—being in the early stages of our company means your contributions will resonate as we grow.

Join Checkly as a Senior Backend Engineer and become an integral part of our innovative team. We are looking for an individual who is passionate about crafting scalable and efficient backend systems. This role offers the flexibility of remote work, allowing you to collaborate with talented professionals across different time zones (UTC-3 to UTC+3).As a Senior Backend Engineer, you will design, implement, and maintain robust backend services that power our platforms. You will work closely with other engineers, product managers, and designers to deliver high-quality software solutions.

Join Our Engineering TeamAt Cacheflow, we are seeking a talented and driven Senior Backend Engineer to help us build scalable and innovative solutions in the fintech space. As part of our founding team, you will have the unique opportunity to collaborate closely with our CEO and CTO, giving you significant influence over the technology, architecture, and culture of our company.Our Technology StackWe utilize cutting-edge technologies including AWS, Java, React, TypeScript, NodeJS, and Kafka to develop our solutions.

Join Raya as a Senior Backend Engineer, where your passion for backend engineering will be recognized and valued! We are looking for an experienced professional excited to work within a Node.js environment. The ideal candidate will possess over 6 years of progressive experience, showcasing both results and leadership capabilities in their previous roles. This is a pivotal moment for our backend team as we navigate through a phase of significant growth.At Raya, we believe in fostering a culture of learning and collaboration, empowering our team members to lead solutions to challenging problems and evolve into their best selves. You will play a crucial role in supporting our backend initiatives in messaging, connectivity, and location-based mapping projects. A successful candidate will demonstrate diligence in designing scalable software architecture and embrace Raya’s vision of enhancing lives through meaningful, in-person connections.We offer a robust benefits package that includes comprehensive medical and dental coverage, a daily food delivery allowance of $50, equity-based compensation, a vibrant company culture, ample learning opportunities, unlimited vacation, 12 weeks of paid parental leave, and an annual $1,000 travel stipend for personal growth and exploration, reflecting our core values of human connection, empathy, and curiosity.

About RemotecomAt Remotecom, we are tackling one of the most significant challenges facing modern organizations: the complexities of global employment. Our mission is to empower businesses of all sizes to hire, compensate, and manage international teams with utmost compliance and ease. Our diverse team operates asynchronously across six continents, united by our core values and a forward-thinking culture. We take pride in fostering innovation and integrating automation and AI into every role. Join us in building a world-class HR platform that values your unique talents and cultural insights! If you are an enthusiastic, inquisitive, and driven individual, we invite you to apply and help shape the future of work!The RoleAs a Senior Backend Engineer, you will collaborate with a talented team of engineers across Frontend, Backend, SRE, and QA. We operate in cross-functional teams focused on specific verticals, and we will match you with the right team based on your preferences and business needs during the interview process.Your primary responsibility will involve developing tools, APIs, and integrations for one of our innovative products. Our backend technology stack includes Elixir and Phoenix, with a PostgreSQL database. For the frontend, we utilize React and Next.js. We rely on GitLab for version control and CI/CD, deploying multiple times daily on AWS.What We OfferEngaging and impactful challenges that empower individuals and businesses to operate seamlessly across borders.Significant opportunity for impact as we are in the early stages of our growth journey, meaning your contributions will directly influence our trajectory.

Our Technology StackWe leverage AWS, Java, React, and TypeScript to build robust solutions.

Phantom is revolutionizing the way people manage their finances with our cutting-edge money app, trusted by millions globally. Our platform seamlessly integrates the essential tools for managing, spending, and growing money into a user-friendly experience. We are dedicated to empowering users with the control and flexibility of cryptocurrency finance while eliminating unnecessary complexities from mainstream financial management.With a strong emphasis on security and user-centric design, Phantom offers sophisticated financial tools that are both powerful and accessible. This commitment to speed, control, and an exceptional user experience has propelled us to remarkable growth, garnering a community of over 20 million users, achieving the top spot in the Google Play Store finance category, and consistently ranking among the Top 50 apps across all categories worldwide.Role OverviewAs a Senior/Staff Backend Engineer, you will take charge of enhancing and maintaining the core authentication infrastructure that safeguards every Phantom account. Reporting directly to the Engineering Manager, you will lead the design, implementation, and operation of our fortified authentication stack, multi-factor authentication strategies, and advanced key-management services. Your contributions will significantly mitigate account takeover risks and provide robust identity solutions for all product teams.

About Us: At RelayProtocol, we are a pioneering Series A startup in the crypto space, dedicated to crafting innovative developer tools that facilitate token trading. Our vision is to empower developers in creating next-generation crypto applications by simplifying token integration and enhancing crypto commerce. We proudly support a myriad of crypto enterprises, including industry leaders like Magic Eden and Coinbase, across diverse sectors such as gaming, social interaction, and payments. Our team comprises deeply technical experts proficient in blockchain indexing, protocol design, and cross-chain interoperability. We are on the lookout for a driven Senior Backend Engineer to join our close-knit yet expanding team.Role Overview: We invite a highly skilled and seasoned Senior Backend Engineer with a robust foundation in crypto and/or financial technologies to elevate our team. In this pivotal role, you will be responsible for the design, development, and maintenance of the backend infrastructure for our cross-chain relayer product, ensuring its reliability and performance.Key Responsibilities:Backend Development: Architect, implement, and sustain highly scalable and resilient backend systems tailored for our cross-chain relayer. Optimize performance and responsiveness for large-scale data processing.Crypto Integrations: Engineer and uphold seamless integrations with various blockchain networks and crypto protocols, enhancing our platform's interoperability.

Attention: This is a fully remote position, but applicants must reside in the EMEA region to effectively collaborate with our team, peers, and internal stakeholders. Please apply only if you are physically located within EMEA.With over 20,000 property managers relying on us, Hostaway is the leading AI-driven vacation rental management platform tailored for professional short-term rental operators. We streamline operations to enhance efficiency and accelerate growth.As a profitable and rapidly expanding unicorn in the short-term rental Property Management System sector, we're at a thrilling juncture. Discover more about our recent valuation and journey here.Role Overview:Hostaway is revolutionizing the vacation rental landscape as a market-leading SaaS scale-up. Through innovative solutions and partnerships with industry giants like Airbnb, VRBO, and Booking, we are successfully outpacing our competitors. Our commitment to customer-centric values ensures we consistently deliver results that foster growth, learning, and innovation for our team, customers, and the industry.This position is pivotal to our continued expansion, particularly following our recent funding round of $365 million. Explore more about this achievement here.

At Speechify, we are on a mission to eliminate barriers to learning through innovative technology. Our platform transforms the way people engage with text, allowing over 50 million users to convert PDFs, books, Google Docs, news articles, and websites into high-quality audio. With our suite of text-to-speech products including iOS and Android apps, Mac application, Chrome extension, and web app, we empower users to read faster, retain more information, and enjoy a seamless reading experience.We are proud to be recognized by Google as the Chrome Extension of the Year and by Apple as the 2025 Design Award winner for Inclusivity. Our diverse team of nearly 200 professionals, hailing from renowned companies such as Amazon, Microsoft, and Google, and prestigious institutions like Stanford, work in a fully remote environment to drive our vision forward.OverviewThe Platform team is responsible for designing, developing, and maintaining our backend services, which encompass payments, analytics, subscriptions, new product features, text-to-speech functionalities, and external APIs. This pivotal role is suited for strategic thinkers who thrive in fast-paced settings, are passionate about shaping product direction, and have a track record of creating engaging user experiences.As a flat organization, we foster leadership through technical excellence and consistent results. We value a strong work ethic, clear communication, and a passion for success.Our interview process is efficient, featuring multiple technical evaluations, typically completed within one week.

About RemoteAt Remote, we tackle the significant challenges of modern organizations by simplifying global employment compliance. We empower businesses of all sizes to hire, compensate, and manage international teams seamlessly. Our culture is built on core values and focused on the future, driving our team to work diligently on ambitious challenges from all corners of the globe. With team members spanning across six continents, we are fully remote and are committed to maintaining a diverse and inclusive work environment.Innovation is at the heart of what we do, and we integrate Automation and AI into every role's requirements.We encourage all Remote team members to contribute their unique talents, experiences, and cultural backgrounds to help us create a leading HR platform. If you are an energetic, curious, and ambitious individual, we invite you to apply and help define the future of work!The RoleYou will be part of a dynamic team of engineers specializing in Frontend, Backend, Site Reliability Engineering (SRE), and Quality Assurance (QA). Our teams are organized into cross-functional groups dedicated to specific verticals.This position is available across multiple teams, and we will match you with the best fit during the interview based on business requirements and your interests.Regardless of the team, you will contribute to developing tools, APIs, and integrations for one of our innovative products.Our backend infrastructure utilizes Elixir and Phoenix, with a PostgreSQL database. Our frontend is developed using React and Next.js. We employ GitLab for version control, issue tracking, and CI/CD solutions, and our applications are hosted on AWS. We rely on Continuous Integration for our deployments and deploy multiple times each day.What We OfferEngaging and impactful challenges that empower individuals and businesses to thrive globally.The chance to make a significant impact within the company as we are still in the early stages of our journey; every contribution you make is magnified by the company's growth.

Join Offchain Labs in our mission to revolutionize the decentralized application landscape. As a Senior Backend Engineer, you will play a pivotal role in enhancing blockchain scalability and security, helping us tackle real-world challenges while upholding the principles of decentralization, transparency, and security. Our team is composed of innovative thinkers and problem solvers eager to push boundaries and create a more equitable digital future. If you are passionate about blockchain technology and thrive in a dynamic environment, we want to hear from you!

About RemoteAt Remote, we are addressing one of the most significant challenges faced by modern organizations: navigating global employment compliantly and effortlessly. Our platform empowers businesses of all sizes to hire, compensate, and manage international teams seamlessly. Guided by our core values and a forward-thinking work culture, our devoted team tackles ambitious challenges asynchronously across the globe. We proudly have team members working from all corners of the world, with positions that are fully remote.Innovation is at the heart of what we do, and we integrate Automation and AI capabilities into every role.We invite every member of the Remote team to share their unique talents, experiences, and cultural backgrounds to help us build a world-class HR platform. If you are driven, inquisitive, and ambitious, join us in shaping the future of work! Apply now!The PositionAs a Senior Backend Engineer, you will collaborate with a team of talented engineers across Frontend, Backend, SRE, and QA. We operate in cross-functional development teams dedicated to specific verticals.This role is open to several teams, and we will determine your specific team during the interview process based on business needs and your interests.No matter the team, you will be instrumental in developing tools, APIs, and integrations for our products.Our backend stack is powered by Elixir and Phoenix, with a Postgres database. For our frontend, we utilize React and Next.js. GitLab serves as our version control, issue tracking, and CI/CD tool, and we deploy our applications on AWS, relying on CI for multiple daily deployments.What This Job Offers YouEngaging and impactful challenges that enhance the ability for individuals and businesses to thrive globally.A chance to make a substantial impact within the organization—being in the early stages of our journey means that your contributions will resonate significantly as our company expands.