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Senior Backend Developer .NET
Designs, builds, and maintains scalable web applications and RESTful APIs using .NET Core/C#, Entity Framework, SQL Server, Docker/Kubernetes, and Azure tooling, while owning production incident response, root cause analysis, and observability (logs, metrics, traces) to keep apps healthy.
21 - Senior Java Backend Developer
PPM Coachers, a Portuguese project-management and consulting firm, is hiring a Senior Java Backend Developer to build and evolve enterprise applications. The work centers on Java 17+, Spring Boot, microservices and event-driven architecture, with Kafka/Solace messaging and CI/CD.
Java Backend Developer
Senior Java backend developer (100% remote from Portugal) designing, building and maintaining scalable services for an international retail project. Core stack: modern Java, Spring Boot, Terraform, Kubernetes, Kafka, GraphQL Federation on Azure Cloud.
Senior Backend Developer
Match Profiler, an IT consultancy, is hiring a Senior Backend Developer (remote, Portugal) to join an internal team/client, focused on data work with Azure Synapse Analytics (Serverless SQL pools), advanced SQL, and PySpark. Fluent English is required.
Java Backend Developer
Ovyo is hiring a mid-senior Java Backend Developer to design, build and operate event-driven microservices and RESTful APIs on AWS, powering a large-scale Video-on-Demand and Live Events platform. Core stack: Java 11+, MySQL/PostgreSQL, with AWS and Docker as nice-to-haves. Contract role.
Senior Backend Developer
Senior Backend Developer at Sky Portugal building highly scalable microservices for global OTT streaming platforms (Peacock, NOW, SkyShowtime, Showmax). Day-to-day work spans the full development cycle—design, implementation, testing, and operations—using Java/Kotlin/C#, Docker/Kubernetes, and CI/CD.
Python Backend Developer
Senior Python backend developer at IT consulting firm Decskill (part of Astek Group): designing, building, and owning HTTP APIs and backend services end to end using FastAPI, Django, SQL databases, Docker/Kubernetes, and CI/CD, in a hybrid office model from their Lisbon/Porto teams.
Senior Backend Developer
Senior backend engineer on an agile team at Blip (part of Flutter Entertainment) owning the full application lifecycle for a high-scale online sports betting and iGaming platform. Day-to-day is designing, coding, testing and documenting solutions in Java, working with Kafka, Akka, Cassandra and related stack, and mentoring junior developers.
Senior Backend Developer (.NET)
Senior backend developer in Porto on the IT Global Markets Anti-fraud team, building and modernizing systems that monitor daily trading activity for fraud and compliance. Core stack is C#/.NET and heavy SQL, with a focus on robustness, automated testing frameworks, and DevSecOps practices.
Senior Backend Developer
Senior backend engineer at Blip (part of Flutter Entertainment) building high-scale sports betting and iGaming platforms for 14M+ monthly customers. Leads the full development lifecycle in an agile team, mentors juniors, and drives technical decisions using Java, Scala, Kafka, Akka, Cassandra and related high-concurrency tech.
Senior BackEnd (Physical design) Engineer
Leads full RTL-to-GDSII backend flow for semiconductor design, focusing on timing closure, low-power optimization, and physical implementation (floorplanning, CTS, IR-drop) while collaborating with design teams and external vendors.
Senior Java Backend Engineer | Spring Boot, Docker, Kubernetes
Senior backend engineer on the London team developing high-performance Java applications and Spring Boot microservices with RESTful APIs, CI/CD pipelines, and cloud-native tooling (Docker, Kubernetes) for automotive-brand projects under Omnicom.
Senior Java Backend Engineer - Hybrid, Madrid
NTT DATA Europe & Latam is hiring a senior Java back-end engineer for a hybrid role in Madrid. The person develops back-end services in Java using Oracle, SOAP/REST web services and JPA/Hibernate persistence, on a permanent contract with training from day one and annual promotion opportunities in a multinational environment.
Senior Backend Engineer – Real-Time Biosensor Data
Senior Backend Engineer building the digital health platform Lingo: designing, implementing, and optimizing scalable microservices and APIs that process real-time biosensor data, while collaborating with Product, Mobile, SRE, and Data/ML teams under HIPAA/GDPR compliance. Based on-site in Barcelona.
Senior Backend Engineer – Real-Time Health Data
Senior backend engineer building and optimizing scalable, secure backend systems for a digital health platform that analyzes real-time biosensor data. Day to day: leading high-performance APIs, event-driven services, and data integrations in collaboration with Product, Mobile, Platform/SRE, and Data/ML teams, based in Barcelona.
Senior Backend Engineer & Developer Advocate
A hybrid role at Quantion (Roche's tech hub) in Madrid: as Developer Advocate for the E3 platform ecosystem, you bridge global developer communities with Roche platform squads, prototype integrations, mentor internal engineers, and improve documentation, API usability, and the end-to-end developer experience.