Sr. Java Developer

Java Backend Developer
Experience: 7+ Years
Working Mode: On-site
Position: Full-time
SandCup Design is a design and strategy firm helping businesses build products, brands, and ecosystems that scale and endure. With an acumen spanning design, technology, AI, and visual production, we collaborate across industries including Fintech, Oil and Gas, Aviation, Civic Tech, Wellness, and more; creating purposeful solutions.
As a Java Backend Developer, you’ll be responsible for building and maintaining secure, scalable backend systems using Java and Spring Boot. You’ll work on critical fintech workflows including payments, transactions, ledgers, KYC, and other systems where reliability and performance are essential.
You’ll collaborate with architects, frontend developers, QA teams, product teams, and client-side stakeholders to build APIs, microservices, databases, and deployment workflows that perform reliably in production.
How your day would look like at SandCup
Design, develop, and maintain REST APIs and microservices using Java and Spring Boot.
Build backend services for payments, transactions, ledgers, KYC, and related financial workflows.
Design and optimize SQL and NoSQL databases, queries, and caching strategies.
Implement authentication, authorization, encryption, and backend security using Spring Security, OAuth2, and JWT.
Work with AWS services including EC2, S3, RDS, Lambda, SQS/SNS, API Gateway, and CloudWatch.
Build and support CI/CD pipelines and containerized deployments using Docker and Kubernetes.
Write unit and integration tests, review code, and maintain clear technical documentation.
Work with frontend teams to ensure smooth API integration and reliable data flow.
Participate in solution planning, technical reviews, Agile discussions, and architecture decisions.
Troubleshoot production issues and support the stability of critical financial systems.
You’ll be a great fit if
You have strong hands-on experience with Java, Spring Boot, Spring MVC, Spring Security, and Spring Data JPA.
You understand microservices architecture, OOP, design patterns, data structures, and algorithms.
You can design reliable APIs for high-volume financial workflows.
You have experience with MySQL or PostgreSQL, including schema design and query optimization.
You understand backend security, OWASP practices, encryption, and financial data protection.
You are comfortable working with AWS, CI/CD tools, Docker, Maven, Gradle, and deployment workflows.
You can debug complex issues and explain technical decisions clearly.
You work with ownership, maturity, and attention to detail.
You can collaborate effectively with technical and non-technical teams.
Experience with fintech, banking, payments, ledgers, KYC, or AML workflows will be preferred.
Exposure to Kafka, NoSQL databases, monitoring tools, Kubernetes, React, or Angular will be an advantage.
Tools
Java
Spring Boot
Spring MVC
Spring Security
Spring Data JPA
REST APIs
Microservices Architecture
AWS
MySQL / PostgreSQL
MongoDB / DynamoDB
OAuth2 / JWT
Git
CI/CD Tools
Docker / Kubernetes
Maven / Gradle
Kafka or Similar Message Brokers
ELK Stack / Grafana / Prometheus
JavaScript / HTML / CSS
Skills
Java Backend Development
Spring Boot Development
REST API Design
Microservices Architecture
Database Design and Optimization
AWS Backend Services
Backend Security
Fintech System Development
CI/CD and Deployment
Unit and Integration Testing
Code Review and Debugging
Technical Documentation
Production Issue Resolution
Client-side Technical Communication
SandCup’s Core Values
Inclusivity and equality
Innovation and creative thinking
Commitment to quality and leadership
Healthy and collaborative work environment
Global exposure
Supportive teamwork
Simplicity and respect
Opportunities to explore multiple domain
Let’s create the uncreated!

Work arrangement
No