Senior Backend Engineer for PHP/Rust Migration

Hello! Thank you for your interest in our Senior Backend Engineer position.At South Geeks, we are dedicated to matching exceptional engineering talent from Latin America with pioneering companies creating transformative products across the globe. We prioritize long-term collaborations and foster strong technical environments that support professional growth …

GitLab is the leading orchestration platform for DevSecOps, empowering organizations to enhance developer productivity, streamline operational efficiency, mitigate security and compliance risks, and accelerate digital transformation. Trusted by over 50 million registered users, including more than half of the Fortune 100, GitLab is dedicated to delivering better, more secure software faster.Our team embodies the same principles reflected in our products: we leverage AI as a fundamental productivity enhancer, expecting all team members to incorporate AI into their daily workflows to drive efficiency, innovation, and meaningful impact. GitLab is where careers flourish, creativity thrives, and every voice is heard. Our high-performance culture, guided by our values and ongoing knowledge sharing, allows our team members to reach their full potential while collaborating with industry leaders to tackle complex challenges. Join us in co-creating the future as we develop technology that revolutionizes software development.Fortune 500® is a registered trademark of Fortune Media IP Limited, used under license. Claim based on GitLab data. Fortune 100 refers to the top 20% ranked companies in the 2025 Fortune 500 list, published in June 2025. Fortune and Fortune Media IP Limited are not affiliated with, and do not endorse products or services of GitLab.As an Intermediate Backend Engineer on the GitLab Knowledge Graph team, you will play a crucial role in building and managing a graph data service that underpins GitLab Duo agents, analytics, and architectural features across GitLab.com, Dedicated, and Self-Managed deployments. You will become part of a dedicated, Rust-first team that values ownership, thoughtful system design, and diligent attention to data and reliability.The Knowledge Graph service is a Rust backend responsible for constructing a property graph from GitLab’s software development lifecycle (SDLC) and code data. It utilizes ClickHouse, NATS JetStream, and the Data Insights Platform, exposing secure graph queries and tools used by AI agents and product features. In this role, you will deliver features and enhancements in focused areas, gain an understanding of the broader architecture, and contribute to reliability, observability, and operational preparedness.In your first year, you will take clear ownership of specific components or features (such as parts of the SDLC indexing pipeline or query paths). You will work to minimize single points of failure through improved testing and runbooks, and assist the team in delivering analytical services that are easier to maintain and evolve over time.

Join tempo-xyz, a pioneering layer-1 blockchain platform designed specifically for stablecoins and real-world payment solutions, leveraging the extensive experience of Stripe in global payments and Paradigm’s innovative crypto technologies.At Tempo, our payment-first architecture delivers a scalable, cost-effective, and reliable infrastructure tailored for high-volume payment applications. Our mission is to facilitate seamless, affordable, and scalable monetary transfers, with a focus on user simplicity for fintechs, banks, merchants, and platforms eager to modernize their payment processes.We collaborate with esteemed design partners from the realms of AI, e-commerce, and financial services, including Anthropic, Coupang, Deutsche Bank, DoorDash, Mercury, Nubank, OpenAI, Revolut, Shopify, Standard Chartered, Visa, and more.As a team of crypto-enthusiasts, we aim to build robust infrastructure that facilitates substantial economic flows on-chain. Our team primarily operates from our offices in San Francisco and NYC, with flexibility for remote engineering roles. We thrive on innovation and taking bold strides — come be part of our journey!The RoleIn this critical position, you will be instrumental in developing advanced low-level systems for our project, giving you a chance to work at the forefront of blockchain technology.

Please note: This position is FULLY remote, but applicants must reside within the European region to effectively collaborate with our team, peers, and internal stakeholders. We welcome applications from anywhere in Europe, but please ensure you are physically located within this region.Hostaway is a leading SaaS scale-up revolutionizing the vacation rental industry. We provide innovative solutions and maintain strategic partnerships with industry giants like Airbnb, VRBO, and Booking.com, allowing us to effectively compete and thrive. Our customer-centric values drive consistent results that foster growth, learning, and innovation for our team and clients.As a profitable, high-growth company, we are proud to be the first unicorn in the short-term rental Property Management System sector . Join us during this exciting phase of our journey! Discover more about our recent achievements and valuation here.About the Role:Hostaway is on the lookout for a dynamic and driven Staff Backend Engineer to join our Core team. This team is crucial for integrating with our primary partners (Online Travel Agencies). These integrations are vital to our customers’ daily operations, enabling seamless connectivity between their properties and major booking platforms. If you have experience working with similar tools that manage large volumes of data and interact with complex APIs, you will be an excellent addition to our team! As a Staff Engineer, you will lead the technical evolution of your domain, ensuring a comprehensive understanding of architectural challenges and strategies for resolution over time.Collaboration with the domain’s Product Manager is essential. While the PM focuses on the what, you will be their counterpart responsible for determining the how. Your ability to delve deep into the technical aspects will be invaluable.

About RemoteRemote is tackling one of the most pressing challenges for modern organizations – navigating global employment compliance effortlessly. We empower businesses of all sizes to hire, compensate, and manage global teams seamlessly. Guided by our core values and a forward-thinking work culture, our team is dedicated to solving ambitious problems asynchronously from around the globe. You can find Remoters working from six continents (Antarctica is the final frontier!), and all of our job openings are fully remote.Innovation is at the heart of our values, and we have integrated Automation and AI capabilities into the requirements for every role.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 dynamic, inquisitive, driven, and ambitious, we encourage you to join us and shape the future of work! Apply today!The RoleYou will be part of a diverse team of engineers specializing in Frontend, Backend, SRE, and QA, organized into cross-functional development teams focused on specific verticals.This position is available for multiple teams, and we will determine the exact team you will join during the interview process based on business requirements and your preferences.Regardless of the specific team, you will be responsible for developing tools, APIs, and integrations for one of our products.Our backend technology stack includes Elixir and Phoenix, supported by a Postgres database. We utilize React and Next.js for our frontend development. GitLab serves as our version control and CI/CD tool, while our applications are hosted on AWS. We rely on continuous integration for our deployments, allowing multiple deployments each day. You can explore our Engineering Rulebook for further insights.What You Can Expect from This RoleEngaging and meaningful challenges that empower individuals and businesses to operate globally.An opportunity to significantly influence our business as we are still early in our journey, meaning your contributions will have a lasting impact as the company grows.A great deal of flexibility in your work environment.

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.

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.

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 scans into detailed, editable as-built files in industry-standard formats. Our groundbreaking technology was showcased during Apple's keynote event when the LiDAR sensor was launched, and we are currently modeling millions of square feet every month.As a globally distributed, virtual-first organization, our team spans across various regions, with significant representation in the US and Europe.We are in search of a Senior Backend Engineer to contribute to the development and maintenance of our internal platform and tools, promoting business scalability and engineering efficiency. Reporting to the Platform Team Lead, this position involves a dynamic blend of foundational backend development and DevOps responsibilities, making it perfect for individuals who thrive on diverse projects. Collaboration with our iOS, Computer Vision, Visualization & Tooling, Web, Infrastructure, and Data engineering teams, as well as other departments, will be crucial.

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.

About Sigma PrimeSigma Prime is a specialized boutique firm in information security, dedicated to providing expert blockchain solutions. Our team consists of talented developers, researchers, and security engineers committed to creating a secure and decentralized world.Since 2015, we have focused on Ethereum, delivering security reviews, design consultancy, and tailored development services to leading companies within the blockchain space, both locally and internationally.We are proud to develop and maintain Lighthouse, an Ethereum 2.0 client implemented in Rust. This project is well-established and recognized as one of the top implementations currently in production. You can explore the open-source repository at github.com/sigp/lighthouse.Additionally, we build and maintain Anchor, an SSV client also developed in Rust, available at github.com/sigp/anchor.The OpportunityWe are seeking skilled software engineers with a passion for decentralized systems and performance-critical infrastructure. You will play a vital role in advancing our block-building and MEV-related systems, with opportunities to engage across the Ethereum ecosystem, including Layer 2 solutions.

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!

Canonical, a trailblazer in the realm of open-source software and operating systems, is seeking a passionate Rust Engineering Lead to join our globally distributed team. Our flagship platform, Ubuntu, is at the forefront of transformative enterprise solutions across various sectors including public cloud, data science, AI, and IoT. With a diverse clientele that features top-tier public cloud and silicon providers, Canonical thrives on fostering innovation and collaboration from over 1200 talented professionals spanning more than 75 countries, with minimal office-based roles. We gather in-person a few times a year in exciting global locations to align strategies and drive execution.As a founder-led, profitable company, we are committed to growth and technological advancement. We invite Rust Engineering Leads of all experience levels to lead the integration of Rust across Canonical's offerings, commencing with Ubuntu and expanding into our own projects and open-source initiatives. We view Rust as a pivotal language for system-level services, representing a natural evolution from traditional C and C++ programming. This role presents a unique opportunity to revolutionize the foundations of future Linux systems, utilizing Rust to enhance everything from system firmware and embedded software to bootloaders, kernels, and desktop environments.Our goal is to position Ubuntu as the premier platform for Rust development, ensuring seamless access to a comprehensive array of tools and capabilities that support cutting-edge open-source and enterprise development.This job listing serves as a general invitation for Rust engineers across all levels of seniority to explore opportunities within Canonical. Exceptional software engineers who are passionate about Rust are encouraged to apply. After the initial interview stage, we will match candidates with the most suitable product teams at Canonical based on their individual interests.Canonical is actively engaged in significant projects involving Python, Go, C, and C++, while we are beginning to invest heavily in Rust. For front-end development, we prefer React and Flutter.Join us in our mission to deliver innovative open-source solutions globally. We uphold the highest engineering standards, seeking individuals with strong motivation and a commitment to excellence in a fully remote and distributed work environment. A deep familiarity with Linux is essential, with experience across multiple distributions being highly advantageous.Location: We have open roles for Rust engineers in every time zone.

About TrafileaTrafilea is an innovative Consumer Tech Platform dedicated to fostering transformative brand growth. We are developing an advanced AI Growth Engine that will propel the next generation of consumer brands.With over $1 billion in cumulative revenue, more than 12 million satisfied customers, and a talented workforce of over 500 professionals across 19 countries, we leverage technology, growth marketing, and operational excellence to scale purpose-driven, digitally native brands.We own and operate our own digitally native brands—not an agency—boasting a presence in major retailers like Walmart, Nordstrom, and Amazon, along with a robust global D2C footprint.Why Join Trafilea?We are a tech-driven eCommerce group scaling our own globally recognized DTC brands, while empowering ambitious talent to grow swiftly. We create and scale our own brands. We invest in AI and automation like few others in the eCommerce space. We experiment rapidly, grow swiftly, and support you in doing the same. Be part of a dynamic, diverse, and talented global team. 100% Remote, competitive salary in USD, generous paid time off, and more.Key ResponsibilitiesAs a Senior Backend Engineer, you will be responsible for designing and delivering robust, high-performance systems that are the backbone of our globally cherished DTC brands. Your projects will cover a wide range from core backend components to AI-driven features, with a steadfast focus on scalability, reliability, and speed.If you excel at tackling complex challenges, writing clean and efficient code, and thrive in a fast-paced, product-oriented environment, this is your chance to make a significant global impact.Architect, develop, and enhance backend services using Golang and Node.js to support millions of customers worldwide.Design, create, and maintain REST APIs that facilitate smooth integrations across products, platforms, and teams.Work with both relational and non-relational databases, ensuring optimal data modeling, querying, and performance tuning.Collaborate closely with cross-functional teams (Product, UX, Marketing) to convert business requirements into technical solutions.Implement AWS best practices for scalable deployments, security, and cost efficiency.Engage in sprint planning, estimation, and reviews within our Agile/SCRUM framework.Proactively identify and resolve technical debt, ensuring the stability and performance of our systems.

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.

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 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 Kaizen Gaming as a Senior Backend Engineer and be part of a dynamic Agile team dedicated to crafting innovative solutions for millions of users worldwide. Collaborate with cross-functional teams to drive impactful projects, from user-facing applications to robust backend services, ensuring high performance and reliability. Your expertise will guide the development of scalable systems, turning complex requirements into elegant technological solutions.

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.

About RemoteAt Remote, we are addressing one of the most pressing challenges faced by modern organizations: managing global employment in a compliant and effortless manner. Our platform empowers businesses of all sizes to hire, pay, and oversee international teams seamlessly. Driven by our core values and a forward-thinking culture, our dedicated team tackles ambitious challenges from all corners of the globe, with team members across six continents (Antarctica is the last frontier!). As a fully remote company, we embrace flexibility and innovation, integrating Automation and AI capabilities into every position.We invite every member of our team to contribute their unique talents, experiences, and cultures to help us build a world-class HR platform. If you are enthusiastic, inquisitive, driven, and ambitious, we want you to join us in shaping the future of work!The PositionAs a Senior Backend Engineer, you will collaborate with a diverse team of engineers specializing in Frontend, Backend, SRE, and QA. Our teams are organized into cross-functional units dedicated to specific verticals, allowing for impactful contributions across the organization.This role is open across several teams, and we will identify the best fit for you during the interview process based on business needs and your personal preferences.You will be instrumental in developing tools, APIs, and integrations for one of our innovative products.Our tech stack includes Elixir and Phoenix for the backend, with a Postgres database. We utilize React and Next.js on the frontend, while GitLab serves as our version control system, issue tracker, and CI/CD solution. Our applications are hosted on AWS, and we leverage continuous integration for deployments, enabling multiple daily updates.What We OfferEngaging and meaningful challenges that empower individuals and businesses to thrive globally.A chance to make a significant impact within a growing company where your contributions will resonate for years to come.

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.