Mobile/Backend Developer

E-Solutions; Mexico; On-site; PHP 5,552,127 - 8,019,740; Full time

Job summary

E-Solutions is seeking a senior full-stack developer to design and implement scalable Java/Spring Boot backends and React frontends. You will collaborate with cross-functional teams to translate requirements into robust solutions and deliver high-quality code across the application stack.

The role emphasizes mentoring, code reviews, testing, and adherence to Agile practices while engaging with clients to clarify needs and drive timely delivery.

Qualifications

• 5–8+ years of professional full-stack development experience.
• Strong English communication and collaboration skills.
• Deep expertise with Java, Spring Boot, J2EE, and microservices.
• Hands-on with Spring MVC, Spring Security, JPA/Hibernate.
• Experience with React Hooks and front-end performance optimization.
• Proficient in RESTful APIs and SOAP Web Services.
• SQL databases (SQL Server/Oracle) experience.
• Familiarity with CI/CD, code reviews, and Agile delivery.
• Bachelor’s degree in CS/IT/SE or related field.

Responsibilities

• Develop high-quality, maintainable code for new features and existing systems.
• Lead design and development of complex features across the stack.
• Translate product requirements into backend and frontend implementations.
• Write and maintain unit tests; support functional/integration testing and TDD.
• Apply SOLID principles and scalable architecture techniques.
• Conduct code reviews and mentor junior developers.
• Engage with clients to clarify requirements and provide updates.
• Collaborate with cross-functional teams on scope and timelines.
• Troubleshoot, debug, and optimize for performance and reliability.
• Work with large-scale enterprise systems and distributed integrations.
• Maintain strong stakeholder relationships with clear communication.

Skills

Java

Spring Boot

J2EE

Microservices

React

RESTful APIs

SQL

CI/CD

JUnit

Jest

Debugging

Cloud (AWS/Azure/GCP)

Education

Bachelor’s degree in Computer Science/IT/Software Engineering or related field

Tools

Docker

Kubernetes

Job description

Responsibilities

• Develop high-quality, maintainable code for both new features and existing systems using Java, Spring Boot, React, and related technologies.
• Lead the design and development of complex features and components across the application stack.
• Translate functional product requirements into high-quality backend and front-end implementations.
• Write and maintain comprehensive unit tests, and support functional, integration, contract testing, and TDD practices.
• Apply SOLID principles, design patterns, and scalable architecture techniques to ensure high-quality solutions.
• Conduct peer and group code reviews and mentor junior developers to uphold best practices.
• Engage proactively with clients to clarify requirements and provide updates.
• Collaborate with cross-functional teams to define requirements, scope, and delivery timelines.
• Troubleshoot, debug, and optimize applications for performance, scalability, and reliability.
• Work with large-scale enterprise systems, complex integrations, and distributed transactions when required.
• Maintain strong stakeholder relationships through clear communication and high emotional intelligence.

Required Skills and Experience

• Strong communication skills, both verbal and written, with proven collaboration and organizational abilities.
• 5–8+ years of professional experience with a strong focus on full-stack development.
• Deep expertise in Java, Spring Boot, J2EE, and microservices architectures.
• Hands‑on experience with Spring MVC, Spring Security, Spring AOP/Aspects, JPA, Hibernate.
• Experience with React Hooks, component‑based architecture, and front-end performance optimization.
• Experience building and consuming RESTful APIs and SOAP Web Services.
• Strong experience with JSON/XML, distributed transactions, and integration patterns.
• Experience with SQL relational databases such as SQL Server or Oracle DB.
• Familiarity with legacy technologies: JSF, AngularJS, jQuery, JBoss, Log4j, Eclipse STS.
• Hands‑on experience with at least one major cloud platform: AWS, Azure, or GCP.
• Strong experience writing automated tests using JUnit, TestNG, Mockito, along with front-end testing frameworks such as Jest, React Testing Library.
• Strong understanding of software engineering best practices including CI/CD, code reviews, maintainable design, and Agile delivery.
• Ability to write clean, maintainable Java and SQL code across diverse technical scenarios.
• Experience with large-scale application development and recent hands‑on coding.
• Excellent English communication skills.
• Strong analytical and problem‑solving skills.
• Ability to quickly learn and adapt to new technologies.
• Bachelor’s degree in Computer Science, IT, Software Engineering, or related field.

Nice to Have Skills

• Experience with Kafka or other event streaming platforms.
• Experience with non-relational databases.
• Familiarity with CI/CD pipelines (Jenkins, GitLab CI, Azure DevOps).
• Experience with Docker and Kubernetes.
• Knowledge of asynchronous programming and message queues.
• Knowledge of secrets management tools (AWS Secrets Manager, Azure Key Vault, GCP Secret Manager, HashiCorp Vault).