Senior Java Backend Engineer

Job not on LinkedIn

October 6

Apply Now

Receive Emails with Similar Jobs

Penguin Formula

WebsiteLinkedInAll Job Openings

IT Solutions • Recruitment • SaaS

Penguin Formula is a company specializing in providing highly skilled and communicative IT professionals to help clients build customized software products. Founded based on the recognition of a shortage of developers in the Dutch market, the company started by recruiting Portuguese developers and has since expanded its recruitment efforts to Brazil and South America. Penguin Formula offers nearshore and offshore IT solutions and prides itself on building dream teams for various enterprises. The company also develops specific SaaS and AI solutions, such as LetShare EMS for event management and PIAF, an AI-based chatbot. With a mission to connect the best software developers to its clients, Penguin Formula focuses on growth through innovation and quality assurance in software delivery. They are headquartered in Lisbon with additional offices in Amsterdam, aiming to be a leading player in the European IT market.

51 - 200 employees

Founded 2016

🎯 Recruiter

☁️ SaaS

📋 Description

• Design, develop, and maintain the Java backend (Spring Boot or similar frameworks) • Develop and optimize REST APIs to support the Angular frontend and external services • Integrate with AI/ML services exposed via REST at a later stage (OpenAI, Ollama, vLLM, Hugging Face, etc.) • Ensure scalability, performance, and resilience in hybrid architectures (cloud + on-premises) • Implement secure handling of sensitive data, respecting privacy and compliance requirements (e.g., GDPR) • Optimize persistence and queries in relational (e.g., PostgreSQL, MySQL) or NoSQL databases • Design monitoring, logging, and error-handling mechanisms for production systems • Support CI/CD pipelines and contribute to infrastructure automation in AWS

🎯 Requirements

• 5+ years of professional experience as a Java Backend Engineer • Strong proficiency in Java 11+ (preferably 17+) and frameworks like Spring Boot • Solid understanding of REST API design and integration • Experience with database systems (SQL and/or NoSQL) • Hands-on experience with cloud environments (AWS preferred) • Experience consuming and integrating external APIs (REST/JSON) • Familiarity with microservices architecture and distributed systems • Good knowledge of security best practices (authentication, authorization, encryption) • Ability to mentor and support junior developers • Strong problem-solving and debugging skills

🏖️ Benefits

• Flexible work arrangements • Professional development opportunities