Senior Java Backend Developer

Description

Job Summary: Develop, maintain, and evolve scalable and secure backend solutions, working on architecture, API development, database optimization, and system monitoring—with a focus on quality and technical leadership. Key Highlights: 1. Developing scalable and secure backend solutions 2. Serving as a technical reference, supporting developers and strategic decision-making 3. Collaborating with Frontend, Product, QA, and DevOps teams **Compensation:** R$ 15.000,00 to R$ 20.000,00 **Employment Model:** PJ | Hybrid **Location:** Ribeirão Preto/SP **Working Hours:** Monday to Friday, from 08:00 to 18:00 Main Responsibilities * Develop, maintain, and evolve scalable and secure backend solutions; * Design software architectures and define technical standards and best practices; * Develop APIs, services, and integrations between internal and external systems; * Model, optimize, and maintain databases; * Ensure application performance, availability, and reliability; * Monitor logs, metrics, and system observability; * Conduct code reviews and support team code quality; * Fix bugs, optimize processes, and implement continuous improvements; * Collaborate with Frontend, Product, QA, and DevOps teams; * Serve as a technical reference, mentoring less-experienced developers; * Document solutions and contribute to strategic technical decisions. Technical Requirements * Solid experience with AWS (SQS, SES, S3, SNS, console and SDK); * Advanced experience with Java; * Experience with Kafka or other messaging solutions; * Proficiency in PostgreSQL (advanced SQL, query optimization, execution plan analysis); * Experience with Redis; * Knowledge of REST and SOAP integrations and microservices architecture; * Mastery of Object-Oriented Programming and concurrent programming; * Experience with logging, metrics, and observability; * Knowledge of Docker and CI/CD pipelines; * Familiarity with Git, DBeaver, Postman/Insomnia/Bruno, Jira, and using AI to support development. Expected Experience * Experience in projects requiring high-volume external integrations; * Experience with highly available and mission-critical systems; * Ability to evaluate trade-offs among performance, cost, and timeline; * Experience acting as a technical reference for the team; * Experience optimizing cloud resource usage; * Ability to bridge technical teams and business stakeholders. Nice-to-Have * Knowledge of Java, Python, Spark, Databricks, Parquet, Big Data, and ETL/ELT pipelines; * Experience with DF-e / NF-e and SEFAZ integrations; * Experience in regulated environments (ISO 27001 or SOC II). Job Type: Full-time CLT Salary: R$15.000,00 – R$20.000,00 per month Work Location: Hybrid remote work based in Ribeirão Preto, SP