Senior Full-Stack Developer

G MASS Consulting; Dublin; On-site; EUR 100,440 - 133,920; Full time

Job summary

G MASS Consulting is seeking a senior software engineer to join a cross‑functional team delivering on‑prem and cloud‑native applications for the financial services sector in Dublin. You will contribute across frontend and backend, leveraging React, Java, Kotlin, Spring, NodeJS and Hibernate to build robust services.

The role requires 5+ years in web app/backend development with Agile experience, and substantial AWS exposure (S3, ECS, CloudFormation).

Qualifications

• Bachelor’s degree or equivalent in Engineering, Computer Science, or related field.
• 5+ years of software engineering experience building web apps and backend services.
• Experience with Agile teams and modern web technologies.
• Strong experience with React, Java, Kotlin, Spring, Hibernate, and NodeJS.
• Hands-on AWS experience including S3, ECS/Fargate, CloudFormation and IAM.
• Familiarity with relational (PostgreSQL) and NoSQL (Elasticsearch) databases.

Responsibilities

• Participate in Sprint Planning, Daily Scrum, Sprint Review and Retrospectives.
• Deliver frontend and backend modules to add features for Document Services.
• Develop front- and back-end code using React, Java, Kotlin, Spring, NodeJS and Hibernate.
• Work with relational databases and PL/SQL basics.
• Demonstrate AWS proficiency (CloudFormation, CloudWatch, S3, Lambdas, ECS, IAM).
• Perform code reviews and ensure code quality across the team.
• Design and implement unit/integration/system/load tests.
• Manage AWS resources safely and cost-effectively.

Skills

Agile teamwork

Analytical problem‑solving

Communication

Education

Bachelor's degree in Engineering/Computer Science or equivalent

Tools

React

Java

Kotlin

Spring

NodeJS

Hibernate

AWS

Docker

PostgreSQL

Elasticsearch

Job description

About Our Client

Our client is a leading global provider of fund administration, corporate, and financial services to the alternative investment industry. They operate across 36+ countries and service more than $1.8 trillion in assets under administration. They are recognised as one of the premier providers in their sector, known for innovation, operational excellence, and a strong culture of performance.

About The Role

You will be working in a cross‑functional team, using agile methodologies to build on‑prem and cloud native applications for the financial services industry. We are looking for true team players who can work beyond their specialty to help the team deliver. Every team member is responsible for the quality of the product and should be willing to work on any tasks needed, be it front‑end, back‑end, test automation, deployment automation, and more. The successful candidate will use their experience and talent to help drive the delivery of the system, introduce new technologies, and guide the evolution of our applications.

Job Duties

• Participate and contribute to all team activities such as Sprint Planning, Sprint Execution, Daily Scrum, Sprint Review, and Sprint Retrospective
• Deliver modules (front‑end and back‑end) to provide new features for the Document Services Team
• Develop front and back‑end code using React, Java, Kotlin, Spring, NodeJS, and Hibernate
• Be comfortable using relational databases and have PL/SQL basics
• Demonstrate core understanding of AWS – specifically CloudFormation, CloudWatch, networking, S3, Lambdas, running containers on ECS, and policies/roles
• Perform code reviews and ensure the quality of the team's work
• Design and implement unit, integration, systems, performance, and load testing
• Manage AWS resources in a safe and cost‑effective manner

Requirements

• Bachelor's degree in Engineering, Computer Science, or equivalent
• Experience working on Agile teams
• 5+ years of software engineering experience, specifically building and architecting web applications and backend services
• 5+ years of experience with Java, Kotlin, Spring, Hibernate, and NodeJS
• 5+ years of experience with React and Redux
• 3+ years of experience working and deploying services to AWS
• Comfortable with Python
• Experience with Docker
• Experience with AWS services such as S3, ECS, Fargate, API Gateway, IAM, and CloudFormation
• Experience with relational databases (ideally PostgreSQL)
• Experience with NoSQL databases (ideally Elasticsearch) would be an asset
• Working knowledge of Kotlin is a plus
• Solid understanding and demonstrated proficiency with core software development processes – debugging, code tuning, code management and branching, coding styles, and refactoring
• Self‑motivated and driven, with strong analytical, problem‑solving, and communication skills

Benefits

6‑month contract. Salary to be discussed.