Senior Java Developer

Who We Are

Fulcrum

Digital is a global AI-first enterprise

transformation company with over 25

years of experience. We partner with

enterprises across financial services,

insurance, healthcare, retail,

manufacturing, higher education, and

logistics to move from AI

experimentation to scalable business

outcomes. Fulcrum Digital works with

over 100 global clients, including

Fortune 500 enterprises, combining deep

industry expertise with capabilities in

enterprise AI, digital engineering,

cloud modernisation, platform

integration, and generative AI.

The Role

We are seeking a

technically strong Senior Software

Engineer to support a client engagement

with a leading global payments

technology company. The client's team

builds industry-leading software that

empowers business users around the

world to make data-driven decisions

through advanced analytics and

experimentation, and is reimagining how

it delivers scalable, cloud-native

solutions. This role is based in

Dublin, Ireland, with a hybrid working

arrangement.

In this role, you will

help define and evolve system

architecture and non-functional

requirements, including scalability,

performance, security, and reliability.

You will work closely with

cross-functional teams to drive complex

technical solutions, lead team-level

design, and deliver scalable services,

APIs, and analytics-driven capabilities

using technologies such as Java,

Databricks, cloud platforms, and modern

data technologies. The team is small,

agile, and empowered to choose the

processes that work best for its goals,

with every engineer contributing across

the full development lifecycle, from

ideation and design through

implementation and testing.

What You'll Do

• Lead team-level

  system design, including high-level

  design, detailed design, API contracts,

  data flows, service interactions,

  integration patterns, and nonfunctional

  requirements such as scalability,

  reliability, performance, security, and

  • operability

• Partner with lead

  engineers and architects to align

  team-level implementations with broader

  platform architecture, modernisation

  goals, engineering standards, and

  • long-term maintainability

• Develop and

  optimise data-intensive applications

  and analytics capabilities using

  Databricks, Spark, and related

  technologies to process and deliver

  • data at scale

• Serve as a hands-on

  technical contributor, designing,

  coding, testing, debugging, and

  delivering production-quality software

  • across the full engineering lifecycle

• Identify and resolve performance

  bottlenecks across services, APIs, data

  processing workloads, and user

  • experiences

• Collaborate with

  cross-functional teams to translate

  business requirements into scalable

  • technical solutions

• Mentor junior and

  mid-level engineers through technical

  guidance, pairing, code reviews,

  • documentation, and knowledge sharing

• Contribute to a collaborative

  engineering culture by modelling

  ownership, clear communication,

  continuous learning, pragmatic

  decision-making, and high standards for

  • software quality

• Improve engineering

  quality through code reviews, design

  reviews, automated testing, secure

  coding practices, observability,

  performance tuning, CI/CD practices,

  • and production readiness

• Troubleshoot

  complex issues across application,

  service, API, data, and cloud layers,

  driving root cause analysis and

  implementing durable solutions that

  improve platform reliability and

  supportability

Requirements

Requirements

• Mandatory: Java, Spring Boot, RESTful APIs, Microservices, AWS, Docker, Kubernetes
• 6+ years of software engineering experience building scalable, distributed systems and cloud-native applications in an agile environment
• Exposure to TypeScript/React, SQL, and Databricks/Spark/PySpark for data pipelines is a plus
• Proven ability to lead team-level design, evaluate technical trade-offs, and translate business needs into secure, maintainable solutions
• Strong collaboration, communication, and problem-solving skills, comfortable working through ambiguity
• Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience