Senior Backend Engineer (Java / Spring Boot)

p Hybrid – Porto open to Remote /pp Freelance contract – 6 months (3+3) with potential long-term integration /pp⚡ Start: ASAP /ppbr/ppWe’re looking for a bSenior Backend Engineer /b to join a fast-growing company in the bEV charging industry /b, helping design and scale the backend systems powering next-generation charging infrastructure. /ppYou will work closely with product and engineering teams to build bhigh-performance and reliable backend services /b in a modern microservices architecture. /ppbr/ppWhat you’ll be doing /pulliDesign and develop bscalable backend microservices /b using bJava and Spring Boot /b /liliDeploy and maintain services in bAWS cloud environments /b /liliWork with bevent-driven systems /b using Kafka or RabbitMQ /liliContribute to barchitecture discussions and system improvements /b /liliEnsure reliability, security, and performance of backend systems /liliParticipate in bcode reviews and technical decision-making /b /liliCollaborate with cross-functional teams to deliver new features /li /ulpbr/ppTech Stack /ppJava /ppSpring Boot /ppAWS (EC2, S3, Lambda, RDS) /ppDocker /ppKubernetes /ppKafka / RabbitMQ /ppMicroservices architecture /ppRelational NoSQL databases /ppReact /ppbr/ppRequirements /pulli4-6+ years of backend development experience /liliStrong experience with bJava and Spring Boot /b /liliKnowledge of React /liliExperience building bmicroservices architectures /b /liliHands-on experience with bAWS /b /liliExperience with bDocker and Kubernetes /b /liliFamiliarity with bmessaging systems (Kafka or RabbitMQ) /b /liliStrong problem-solving and communication skills /liliFluent English /li /ul