Backend Developer Jobs

About the Role We're looking for a Senior Backend Engineer to build the systems and services that power our product experience. You'll own the backend infrastructure that makes our content discoverable, our features responsive, and our platform reliable at scale. Your work will directly shape

About us Alpha is a product studio focused on the intersection of AI and consumer social – backed by a16z and many of the top investors in the world. Our goal is to create social products that we use, that our friends use, and that have the potential to reach billions of people. Clubhouse was our fi

Kickstart your career at our Krakow Studio!At Kalamba Games, we're building the most high-performing stack in the industry across Game Development, RGS Platform, QA, and Art. Based in Krakow, our studio is home to a fun-loving, agile, and experienced team driven by a passion to disrupt the market th

Polychain is seeking a Backend Engineer to support our Accounting and Reporting Systems. This contract role is essential to building APIs, managing crypto asset data, and delivering actionable insights for our asset operations team. You’ll focus on data extraction from various crypto platforms, data

Anlatan is a company working on cutting edge AI and making the best possible AI-fueled products. We pride ourselves on being user-friendly, privacy-safe, and censorship-free. We're a ragtag team of personalities, focused on crafting the best of the best in the AI world. We are seeking a skilled Back

Boss Tech is the first and only Business Operating Smart Solution empowering entrepreneurs to embrace Web3 as it is intended: openly yet securely, distributed yet authenticated, and streamlined and automated for meaningful data-driven efficacy. Boss Tech was created by multi-exit technology entrepre

Who we are A young technology company head-quartered in Singapore with an office in Barcelona and Dubai. We are driven by a passion for building innovative, customer-inspired products and look forward to growing the team with like minded individuals. Responsibilities As a Backend Developer at Touché

Na CI&T , ajudamos grandes empresas a transformar o potencial da AI em impacto real nos negócios com AI Deployment, execução AI-native e tech-integrated business solutions. Com 30 anos de experiência em transformação tecnológica, aceleramos inovação com expertise em agentic SDLC, application moderni

We at Confiz are hiring an Principal Backend Engineer with strong expertise in backend technologies, system architecture, and performance optimization. Join our team to design and build scalable, secure, and high-performing backend systems that power exceptional digital experiences for global enterp

Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences– all created by our global community of developers and creators. At Roblox, we’re building the tools and platform that empower our community to bri

Summary We are seeking a Senior C# /.NET Integration Engineer to design and build enterprise integrations, APIs, and data processing solutions in Azure environments. This role focuses on C# /.NET Core development, REST API design, SQL-based data work, JSON/XML transformations, ETL processes, and clo

We are looking for a Backend Developer to design, build, and maintain the server-side logic of our applications. You will be responsible for ensuring high performance, scalability, and security of back-end services while integrating with front-end and third-party systems. This role involves problem-

We are seeking a talented Mid-Level Backend Engineer to build, maintain, and enhance scalable backend systems powering digital banking, payments, lending, agency banking, and enterprise applications. The ideal candidate should have strong experience developing APIs, working with databases, integrati

Exa is an applied AI lab building a search engine unlike the world has ever seen. We build massive-scale infra to crawl the entire web, train state-of-the-art embedding models to process it, and design super high performant vector databases to retrieve over it. We now power search for Cursor, Cognit

About GlossGenius GlossGenius is the AI-powered system behind the world’s most meaningful appointments, helping 100,000+ service businesses earn more revenue and free up time for the work they love. Our agentic workforce gets more clients in the door, grows profit per appointment, and keeps clients

Senior Back-End Developer – Backbase and .NET We're looking for a Senior Back-End Developer with expertise in the Backbase digital banking platform and the Microsoft .NET ecosystem. When you join Aequilibrium, you'll be part of a fun and agile technology professional services company driving innovat

About Cylinder Founded in 2021 and offered as an employer benefit, Cylinder (formerly Vivante Health) delivers personalized, clinician-backed care to those suffering from digestive issues through its virtual health platform. Cylinder's tech-forward, human-first program connects members to the right

Backend Engineer — IAM Platform Transformation (Kotlin, Kafka, DevOps) Interim contract | Hybrid (Netherlands, office in the Amsterdam metropolitan area) | Start 1 July 2026, initial term to end of 2026 with possible extension Our client is a leading European food retailer running one of the most am

Since 2012 Odaseva has helped global enterprises secure and manage their most valuable asset: data. The Odaseva EnterpriseData Platform secures and manages Salesforce data, ensuring data resilience, regulatory compliance, and unlocking the value of data. It’s built to solve the complex challenges of

At Campeón Gaming, we build the technology behind online casino and sports betting brands. We provide an all-in-one platform that allows our partners to launch, run, and grow their own brand with our engine. From the technology to the day-to-day operations, we support everything needed to make a bra