Hybrid Senior FullStack Java Engineer, JavaScript

at HITCONTRACT

• Job title: Senior FullStack Java Engineer, JavaScript
• Job type: Full Time
• Experience level: Senior
• Salary: €4,485 - €5,950 per month
• Degree requirement: Bachelor's Degree
• Tech skills: Cassandra, Cypress, Docker, Grafana, Java, JavaScript, Jenkins, JUnit, Microservices, Mockito, MongoDB, MySQL, Node.js, NoSQL, Postgres, Prometheus, React, Redis, Redux, Selenium, Spring, Spring Boot, SpringBoot, SQL, TypeScript
• Location requirements: Hybrid, Vilnius, Lithuania

About the role

• Senior Software Engineer developing financial data reporting solutions using Java and React. Collaborating with a skilled team on a greenfield project with a microservices architecture.

Responsibilities

• Software Development - Design, develop, and maintain scalable full-stack applications using **Java (Spring Boot)** and **React.js**.
• Code Quality & PR Review - Conduct thorough peer reviews of pull requests to ensure code quality, maintainability, and adherence to best practices.
• Scrum Ceremonies - Actively participate in Agile ceremonies, including daily standups, sprint planning, retrospectives, and backlog grooming.
• Mentorship & Collaboration - Mentor junior developers, share knowledge across the team, and foster a culture of continuous learning.
• Frontend Engineering - Build responsive and user-friendly interfaces using **React**, Redux, and modern UI libraries.
• Backend Engineering - Develop robust RESTful APIs and microservices using **Java**, ensuring performance, security, and scalability.
• Database Design & Optimization - Work with **SQL (PostgreSQL, MySQL)** and **NoSQL (MongoDB, Cassandra)** databases to design schemas, write efficient queries, and optimize performance.
• Testing & Automation - Implement unit, integration, and end-to-end tests using tools like JUnit, Mockito, Cypress, or Selenium.
• DevOps & CI/CD - Collaborate on CI/CD pipelines, containerization (Docker), and deployment strategies using tools like Jenkins or GitHub Actions.
• Documentation & Reporting - Maintain clear technical documentation and provide regular updates on progress and blockers.

Requirements

• Bachelor's or Master's of Science.
• 4-5 years of experience in software development.
• **JavaScript -** Deep understanding of core JS concepts, including closures, async programming, and ES6+ features.
• **React + Redux + Redux Saga + TypeScript -** Building scalable, maintainable, and high-performance SPAs with advanced state management and typed components.
• **Advanced HTML & CSS (huge plus) -** Semantic markup, accessibility, responsive design, and cross-browser compatibility.
• **ECMAScript 6+ (Expert level) -** Proficient in modern JS syntax and features such as arrow functions, destructuring, modules, promises, and async/await.
• **Node.js -** Building RESTful APIs, microservices, and real-time applications with Express or similar frameworks.
• **Java, Spring, Spring Boot -** Developing robust backend services, integrating with databases, and implementing business logic with enterprise-grade frameworks.
• **PostgreSQL -** Schema design, query optimization, and transactional integrity.
• **Redis -** In-memory data storage for caching, session management, and pub/sub messaging.
• Application monitoring using tools like **Prometheus**, **Grafana**, **ELK Stack**, or **New Relic** to ensure uptime, performance, and quick issue resolution.
• Experienced in **Scrum of Scrums**, sprint planning, retrospectives, and backlog refinement.
• Comfortable working in cross-functional teams and managing dependencies across squads.
• Strong communication skills for gathering requirements, presenting solutions, and managing expectations.
• Experience in stakeholder engagement, demo sessions, and feedback incorporation.
• Flexibility to work on backend or frontend.

Benefits

• Opportunity to be part of a global organization.
• Encouraging working atmosphere, engaging activities, and extra benefits (e.g., additional medical insurance (covers gym subscription), team events, outreach activities, and others).
• Hybrid work model with remote work opportunities ( 3/5 days weekly from the office).
• Open, modern, and ergonomic work environment when working from the office with the multicultural community.
• Opportunity to grow professionally and personally (e.g., Udemy) and continuously develop within the domain.