Sr. Full Stack Developer (Java, APIs, React) - GCP

Sr. Full Stack Developer (Java, APIs, React) – GCP

The Enterprise Payments IS Tech Specialist – Full Stack (Java, APIs, React) – GCP serves as a senior technical contributor on the Enterprise Payments technology team, leading the design, development, integration, and operational support of cloud native payment solutions hosted on Google Cloud Platform (GCP). This role delivers secure, scalable back end services and modern web user interfaces, aligned with enterprise architecture standards, business strategy, and regulatory requirements. This position plays a key role in delivering complex initiatives, modernizing payment platforms, and driving engineering best practices across cloud native and event driven architectures.

We are seeking an experienced IS Tech Specialist with strong full stack engineering skills (Java, API development, and React) and deep GCP expertise to support our Enterprise Payments platform. This role focuses on building cloud native services and user experiences, system integration, and production support in an agile environment, enabling high volume payment origination, processing, disbursement, and settlement capabilities. The ideal candidate brings strong hands on experience with Java (e.g., Spring/Spring Boot), designing and implementing secure APIs (REST; familiarity with API management such as Apigee/API Gateway), and building web applications using React, while collaborating closely with product, business, and enterprise IT partners. Experience with distributed systems and modern DevOps practices on GCP is essential.

Key Responsibilities

Serve as a subject matter expert (SME) for GCP technologies within the Enterprise Payments portfolio

Provide hands on technical leadership for cloud native application development and support

Design, build, and maintain highly available, event driven payment systems on GCP

Develop serverless and container based solutions using Cloud Functions, Cloud Run, and GKE

Develop and maintain back end services using Java (e.g., Spring Boot), including performance tuning and resiliency patterns

Design, build, and version RESTful APIs, including contract-first design, documentation, and integration testing

Build and enhance web user interfaces using React and modern JavaScript/TypeScript practices

Implement messaging and event processing using Pub/Sub

Build and manage data storage using Cloud SQL (PostgreSQL/MySQL), BigQuery, and Firestore

Design and expose APIs using Apigee or API Gateway with secure authentication and authorization

Implement identity and access management using GCP IAM, Workload Identity, and Identity Platform

Configure networking using VPC, subnets, firewall rules, load balancers, and private service access

Monitor and troubleshoot applications using Cloud Monitoring, Cloud Logging, Error Reporting, and Trace

Implement security capabilities including Security Command Center, audit logging, and threat detection

Automate infrastructure using Terraform and GCP Deployment Manager

Enable CI/CD pipelines using Cloud Build, Artifact Registry, and Git based repositories

Partner with business and technology stakeholders to translate requirements into technical solutions

Produce technical designs, estimates, and documentation aligned with SDLC standards

Participate in incidents, problems, and change management processes using ServiceNow

Support production systems, including participating in on call rotation with the team

Ensure compliance with internal controls, security policies, and regulatory requirements

Mentor junior engineers and promote engineering best practices

Basic Qualifications

9+ years of experience in software engineering or IS technical roles

3+ years of hands on experience developing and supporting cloud native applications on GCP

Strong proficiency in Java (Spring/Spring Boot) and JavaScript/TypeScript (React)

Experience building and supporting secure RESTful APIs and asynchronous, event driven integrations (OAuth2/OIDC or similar authentication approaches preferred)

Experience with relational databases (PostgreSQL, MySQL) and NoSQL data stores

Hands on experience with:

Cloud Functions, Cloud Run, or GKE

Pub/Sub messaging

Cloud SQL, BigQuery, Firestore

IAM and security best practices

Experience with Infrastructure as Code (Terraform preferred)

Familiarity with CI/CD pipelines and DevOps practices

Strong troubleshooting, analytical, and communication skills

Bachelor's degree or equivalent practical experience

Preferred Qualifications

Experience supporting enterprise scale payment or financial systems

Knowledge of payment processing concepts (ACH, checks, debit/credit cards, Zelle, bill pay, etc.)

Experience with Unix/Linux environments and scripting

Familiarity with observability tools such as Splunk, Dynatrace, or Datadog

Exposure to AI assisted development or automation tools

Experience working in regulated or highly controlled environments