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Senior Backend Engineer (python/django) - Remote
Senior backend engineer building and maintaining scalable Python/Django services and REST APIs for a financial technology company's products. Day-to-day work covers API development, database design and query optimization, security, code reviews, and collaboration with frontend and product teams in a fully remote setting.
Remote Senior Backend Engineer (python/django)
Senior backend engineer designing, building, and maintaining scalable Python/Django services and REST APIs for a fast-growing SaaS company, working fully remotely with a global team. Stack includes PostgreSQL/MySQL, Celery, Docker, and cloud platforms (AWS/GCP/Azure).
Remote Senior Backend Engineer: Scalable Apis & Cloud
Senior backend engineer on a fully remote team: designs, builds, and maintains scalable server-side services and REST/GraphQL APIs, optimizes database performance, and contributes to architectural roadmaps using Python, Java, Go, or Node.js.
Senior Backend Developer Java | Producto Digital, Ia, Ci/Cd Y Observabilidad
Principal Statistical Programmer (remote) at Cytel, fully embedded with a global pharmaceutical client: builds SDTM/ADaM datasets, define.xml and SAS/R programs for clinical trial tables, listings and graphs, oversees CRO programmers, and supports regulatory submissions and clinical study reports.
Backend Java Developer – Microservicios | Tarjetas y Medios de Pago
Backend Java developer building and evolving microservices for digital payment solutions at a major financial institution — working on card tokenization, card digitalization, and linking devices to wallets. Core stack: Java 11+, Spring Boot, and Kafka/RabbitMQ messaging.
Remote Backend Java Developer - Microservices & Wallets
Backend Java developer joining the cards & payments area of a financial institution, building digital payment solutions such as tokenization, card digitization, and linking devices to wallets. Core stack: Java, Spring Boot, microservices architecture, and messaging with Kafka/RabbitMQ.
Backend Go Developer
A backend developer (2–3 yrs experience) at a Madrid-based IT consultancy in the Alkemy Group, building and maintaining Go microservices and REST APIs, working with SQL/NoSQL databases, writing tests, debugging production issues, and joining sprint planning within an Agile team with senior mentorship.
Backend Developer Node.js / Java (AWS)
On-site backend developer in Madrid maintaining and evolving Node.js services deployed on AWS for a leading transport-sector company, with a planned 2027 migration to Java. Day to day: hexagonal architecture, automated testing, CI/CD, GitHub PR reviews, Scrum, AI-assisted development, and on-call incident support.
Go Backend Developer — Flexible Hours & Growth Perks
Backend developer at GainRep in Madrid building and maintaining scalable Go backend services with mentorship from senior engineers — designing RESTful APIs, integrating with frontend profiles, and writing unit and integration tests using relational and NoSQL databases.
Backend Developer - Spring Boot (Java) in Córdoba
Backend developer in Córdoba, Spain, building and scaling a fintech platform: designing Java/Spring Boot microservices and REST APIs, working with SQL/NoSQL databases, and maintaining high standards of performance, security and reliability.
Backend Developer | Java / Python | Banking
Fully remote contract senior software engineer (~20 hrs/week) for Mercor: evaluates and enhances AI model capabilities on complex software-engineering tasks, builds benchmarks, and improves training data with AI research teams. Backend focus in Java/Python (banking per title), paying $150–$210/hour.
Desarrollador Java Senior | Líder Backend & Microservicios Spring
Senior Java developer at El Corte Inglés Group to lead backend development and define scalable enterprise solutions, coordinating multidisciplinary teams. Core stack is Java 11/17, Spring Boot, REST and microservices, with CI/CD; hybrid work based in Madrid.
Desarrollador Backend Java Spring Boot — APIs, Rendimiento
Backend Java developer at Kairos Digital Solutions in Huelva: design, build and maintain robust, scalable enterprise applications using Java and Spring Boot in an agile team alongside architects and product owners. Valued experience includes RESTful APIs, Hibernate, and relational database management.
Desarrollador Backend Java | Microservicios, SpringBoot, Nube
Pixie Services is hiring freelance Backend Java developers for long-term projects: building microservices with Spring Boot in cloud environments, analyzing and gathering business requirements, and collaborating with multidisciplinary teams. A Master's degree and prior healthcare-sector experience are required.
Sr. Software Engineer, Backend
Senior backend engineer on Pendo's Core team, owning complex platform features end-to-end for the Pendo product analytics SaaS — coding in Go/Java/Python/C++ on AWS or GCP with SQL/NoSQL stores, shipping safely with feature flags and tests, and using AI tools daily. Hybrid role, 3 days a week in the Raleigh, NC office.
Backend Engineer
Build and scale backend services for a cybersecurity platform that secures AI-driven software development using .NET Core, Kafka, and Kubernetes.
Senior Java Spark Backend Engineer | Data Pipelines
Hirematic Talent Solutions in Montreal is hiring a Senior Java Backend Developer to design, build, and maintain high-performance, scalable backend systems and data pipelines using Java, Spring Boot, and Apache Spark, collaborating with frontend, product, and DevOps teams.
Java Spark Backend Developer
Senior Java backend developer (7+ years) in Montréal designing scalable microservices with Java/Spring Boot and building large-scale data pipelines with Apache Spark, plus SQL/NoSQL database work and REST APIs. Contract role paid hourly (CAD 50-55 + HST) through a talent solutions firm; Angular knowledge a plus.
2130 Senior Backend Engineer - Payments Infrastructure
Position: Senior Backend Engineer - Payments Infrastructure Location: Fully Remote (Singapore, Philippines, Thailand Preferred) Contract Type: Full-time, Permanent Time Zone Alignment: Indian Standard Time (IST) 🧭…