Java Backend Engineer

TechBiz Global GmbH; São Paulo; Presencial; BRL 120.000 - 160.000; Tempo integral

Resumo da oferta

A recruitment service provider is looking for a skilled Java Backend Engineer to build an Applicant Tracking System. The role involves designing and implementing backend services, maintaining RESTful APIs, and ensuring high-performance architecture. Candidates should have 3–5 years of experience in Java development, strong knowledge of Spring Boot, and experience with FIX protocol. Excellent problem-solving skills and familiarity with cloud services are preferred. The position is based in São Paulo, Brazil.

Qualificações

• 3–5 years of professional experience in backend development with Java.
• Strong expertise in Spring Boot, Hibernate/JPA, and RESTful APIs.
• Hands-on experience with FIX protocol (QuickFIX/J or similar libraries).

Responsabilidades

• Design and implement backend services and APIs in Java for ATS functionality.
• Develop and maintain RESTful APIs for integrations with external systems.
• Ensure low-latency, high-availability, and secure backend architecture.

Conhecimentos

Java

Spring Boot

RESTful APIs

Multithreading

Problem-solving

Formação académica

Bachelor’s or Master’s degree in Computer Science, Engineering, or related field

Ferramentas

PostgreSQL

MySQL

MongoDB

Redis

Git

Docker

Kubernetes

Descrição da oferta de emprego

At TechBiz Global, we are providing recruitment service to our TOP clients from our portfolio. We are currently looking for a skilled Java Backend Engineer to join one of our clients' teams. You will play a key role in building an Applicant Tracking System (ATS) integrated with REST APIs and FIX APIs. You will work closely with product managers, architects, and front-end engineers to design, develop, and optimize scalable backend services for high-performance applications.

Key Responsibilities

• Design and implement backend services and APIs in Java (Spring Boot / Jakarta EE) for ATS functionality.
• Develop and maintain RESTful APIs for integrations with external systems and internal services.
• Implement and optimize FIX protocol-based APIs for financial/trading system integrations.
• Ensure low-latency, high-availability, and secure backend architecture.
• Write clean, maintainable, and well-documented code following industry best practices.
• Collaborate with DevOps to deploy and monitor services in production environments (AWS, GCP, Azure, or on-prem).
• Optimize database performance (SQL/NoSQL) and design schemas for ATS workflows.
• Conduct code reviews, unit testing, and integration testing to maintain code quality.
• Troubleshoot and resolve performance, scalability, and reliability issues.
• Stay updated on emerging technologies, protocols, and best practices in API development and backend engineering.

Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.

3–5 years of professional experience** in backend development with Java.

Strong expertise in Spring Boot, Hibernate/JPA, and RESTful APIs.

Hands-on experience with FIX protocol (QuickFIX/J or similar libraries).

Solid knowledge of multithreading, concurrency, and low-latency system design.

Experience with databases (PostgreSQL, MySQL, MongoDB, Redis, etc.).

Proficiency in Git, CI/CD pipelines, Docker, Kubernetes.

Strong understanding of security principles (OAuth2, JWT, SSL, encryption).

Excellent problem-solving, debugging, and analytical skills.

Nice to Have

• Experience with financial systems, trading platforms, or ATS solutions.
• Knowledge of messaging systems (Kafka, RabbitMQ, Redpanda, Chronicle Queue, etc.).
• Exposure to cloud services (AWS/GCP/Azure).
• Familiarity with microservices architecture and event-driven systems.