Senior Java Developer - Shopify (REMOTE @Portugal)

KCS IT; Portugal; Remote; EUR 60,000 - 90,000; Full time

Benefits offered by this job

Free training programs

International projects in Benelux

Well-being program (nutrition, mental,

Remote-friendly and flexible work

Job summary

KCS IT, founded in 2008 and based in Lisbon, is a consulting company in IT services offering diverse projects across retailers and e-commerce. We are seeking a Senior Java Developer to join our team for remote work from Portugal, focusing on Shopify integrations and scalable backend services.

You will work with modern Java, Spring Boot, GraphQL, AWS, and Kafka in production systems, delivering robust REST APIs and observability practices, while collaborating with distributed teams.

Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or a related field.
• Strong hands-on experience with modern Java versions and Spring Boot, developing scalable backend services and REST APIs.
• Proven experience with Shopify integrations, and maintaining production environments.
• Solid experience with GraphQL, designing and maintaining GraphQL APIs.
• Strong hands-on experience with AWS cloud services, including DynamoDB and secrets management.
• Experience with Kafka or similar event-streaming technologies and event-driven architectures.
• Knowledge of OpenTelemetry and observability practices, including monitoring and distributed tracing.
• Fluency in English is mandatory; based in Portugal; availability to work 08:00–17:00 CET.

Skills

Senior Java development

REST APIs

Backend scalability

Observability

English fluency

Education

Bachelor's degree in Computer Science, Software Engineering, or related field

Tools

Spring Boot

GraphQL

AWS

Kafka

OpenTelemetry

Job description

We’re looking for the special, unique and amazing YOU!

@ KCS IT, we look for the ones that stand out, for those who always want to be better and fight for it, and for those who have the same values that we do: dedication, energy, integrity, transparency, flexibility, trust, honesty, hard work, proactivity, team work.

At KCS we stand for equality and value diversity. We create a safe, diverse environment where opportunities are equal for everyone! We do not discriminate based on age, ethnicity, sexual orientation, gender, disability or any factor other than merit. All applications with skills for the position are welcome!

Senior Java Developer – Shopify (REMOTE @Portugal)

Seniority: Senior

The amazing you, will have:

• Bachelor's degree in Computer Science, Software Engineering, or a related field;


• Strong experience as a Senior Java Developer, with solid knowledge of backend development and complex production-level systems;


• Strong hands‑on experience with modern Java versions and Spring Boot, developing and maintaining scalable backend services and REST APIs;


• Proven experience with Shopify integrations, including maintaining, monitoring and troubleshooting integrations in production environments;


• Solid experience with GraphQL, including designing, developing and maintaining GraphQL APIs;


• Strong hands‑on experience with AWS cloud services, ideally including DynamoDB and secrets management solutions;


• Experience with Kafka or similar event‑streaming technologies and event‑driven architectures;


• Knowledge of OpenTelemetry and observability practices, including monitoring, logging and distributed tracing;


• Strong troubleshooting, debugging and problem‑solving skills in production environments;


• Experience working with distributed systems and scalable backend architectures;


• Fluency in English is mandatory;


• Must be based in Portugal;


• Availability to work from 08:00 to 17:00 CET.

To turn yourself from amazing to unique, you´ll have (plus):

• Experience in retail or e-commerce projects;


• Knowledge of microservices architecture and asynchronous communication patterns;


• Experience with CI/CD pipelines and automated testing;


• Familiarity with AWS infrastructure and cloud-native development best practices;


• Related certifications.

Why should you become part of our family?

• You can develop a career that fits you: your career development is personalized, taking in consideration your needs and goals from a short to long term


• Interesting Challenges Ahead: you can work for several clients from different sectors of activity


• Free training programs: Our training and certification programs in languages, tech, behavior and business will help you to reach your full potential faster


• International projects in Benelux: you can gain international experience in Benelux and balance a new way of living with work


• Type of projects (depending on the project you might find one of this types of projects):


• In hybrid Systems: Is important to balance work with socialization, that´s why a hybrid system works for us and for you


• Full Remote projects: If you want to work while you enjoy the comfort of your home


• Full Onsite projects: if you prefer the company of your colleagues!


• Take care of your well-being: Enjoy our free nutrition, psychologist, general medicine appointments and our yoga and personal training days… all remote!

Who are we?

Founded in 2008 and based in Lisbon, KCS IT is a consulting company in the field of Information Technology and Services, focused on creating value for our clients through three main areas: Consulting, Outsourcing, Innovation and Training. Our commitment to talent development is unmistakable in the recent opening of the Porto, Leiria and Azores hubs, which aims to develop technology for the national and international market. Since 2018 we have been elected one of the 10 major companies in the “Index of Excellence”, an initiative that aims to reward organizations that invest most in the development and satisfaction of their employees.