Java - SSE/ Senior Developer
Singapore
Company Profile: Nucleus Software has been providing Products and Services to various Global and Regional Financial institutions, from past 36 years. As a pioneer IT Service provider, Nucleus carry deep banking domain expertise and experience on latest technological trends. Nucleus’s developed platforms powers the operations of more than 150 institutions in 50 countries, supporting multiple business veritcals, accessible through Mobile and internet channels
JOB ROLE & RESPONSIBILITIES
- Develop & support application through all stages of the project life cycle, including Design, Construction, Testing support and Warranty support
- Having experience in Java 1.6 and above, JEE, Spring, Struts,microservices ORM and Oracle.
- Good understanding of Design Principles and Object-Oriented Programming
- Develop Low level design documents
- Responsible for Coding, Developing Test cases using Junits, Unit Testing
- Adhering the schedule and scope of the project
- Ensure to follow the Technology and Process standards set for the project
- Produce high quality technical delivering for the customer
- Interact with project lead to review technical deliverables
Key deliverables
- Design and Develop Programs with high quality and agreed processes, within the planned schedule
- Review Unit Test Cases with Project Lead
- Design, Develop and Unit Test
- Technical Design documents (LLD)
- Support throughout testing, implementation and warranty phases
Desired for the Position:
- Hands on experience in Designing and Developing web applications using Java EE platforms (Spring, Struts, EJB), ORM and Oracle Database)
- Strong background of Object-oriented analysis and design using common design patterns
- Profound insight of Java and JEE internals (Class loading, Memory Management, Transaction management etc)
- Good knowledge of Relational Databases (Oracle) and PL/SQL
- Carries good analytical and communication skills
Location: Base: Chennai , Bangalore and Noida, Projects-Singapore
Package: upto 17 L
Experience: 5 yrs

About Nucleus Software Exports
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Job Details
- Job Title: Senior Backend Engineer
- Industry: SAAS
- Function – Information Technology
- Experience Required: 5-8 years
- Working Days: 6 days a week, (5 days-in-office, Saturdays WFH)
- Employment Type: Full Time
- Job Location: Bangalore
- CTC Range: Best in Industry
Preferred Skills: AWS, NodeJS, RESTful APIs, NoSQL
Criteria
· Minimum 5+ years in backend engineering with strong system design expertise
· Experience building scalable systems from scratch
· Expert-level proficiency in Node.js
· Deep understanding of distributed systems
· Strong NoSQL design skills
· Hands-on AWS cloud experience
· Proven leadership and mentoring capability
· Preferred candidates from SAAS/Software/IT Services based startups or scaleup companies
Job Description
The Role:
What You’ll Build:
1. System Architecture & Design
● Architect highly scalable backend systems from the ground up
● Define technology choices: frameworks, databases, queues, caching layers
● Evaluate microservices vs monoliths based on product stage
● Design REST, GraphQL, and real-time WebSocket APIs
● Build event-driven systems for asynchronous processing
● Architect multi-tenant systems with strict data isolation
● Maintain architectural documentation and technical specs
2. Core Backend Services
● Build high-performance APIs for 3D content, XR experiences, analytics, and user interactions
● Create 3D asset processing pipelines for uploads, conversions, and optimization
● Develop distributed job workers for CPU/GPU-intensive tasks
● Build authentication/authorization systems (RBAC)
● Implement billing, subscription, and usage metering
● Build secure webhook systems and third-party integration APIs
● Create real-time collaboration features via WebSockets/SSE
3. Data Architecture & Databases
● Design scalable schemas for 3D metadata, XR sessions, and analytics
● Model complex product catalogs with variants and hierarchies
● Implement Redis-based caching strategies
● Build search and indexing systems (Elasticsearch/Algolia)
● Architect ETL pipelines and data warehouses
● Implement sharding, partitioning, and replication strategies
● Design backup, restore, and disaster recovery workflows
4. Scalability & Performance
● Build systems designed for 10x–100x traffic growth
● Implement load balancing, autoscaling, and distributed processing
● Optimize API response times and database performance
● Implement global CDN delivery for heavy 3D assets
● Build rate limiting, throttling, and backpressure mechanisms
● Optimize storage and retrieval of large 3D files
● Profile and improve CPU, memory, and network performance
5. Infrastructure & DevOps
● Architect AWS infrastructure (EC2, S3, Lambda, RDS, ElastiCache)
● Build CI/CD pipelines for automated deployments and rollbacks
● Use IaC tools (Terraform/CloudFormation) for infra provisioning
● Set up monitoring, logging, and alerting systems
● Use Docker + Kubernetes for container orchestration
● Implement security best practices for data, networks, and secrets
● Define disaster recovery and business continuity plans
6. Integration & APIs
● Build integrations with Shopify, WooCommerce, Magento
● Design webhook systems for real-time events
● Build SDKs, client libraries, and developer tools
● Integrate payment gateways (Stripe, Razorpay)
● Implement SSO and OAuth for enterprise customers
● Define API versioning and lifecycle/deprecation strategies
7. Data Processing & Analytics
● Build analytics pipelines for engagement, conversions, and XR performance
● Process high-volume event streams at scale
● Build data warehouses for BI and reporting
● Develop real-time dashboards and insights systems
● Implement analytics export pipelines and platform integrations
● Enable A/B testing and experimentation frameworks
● Build personalization and recommendation systems
Technical Stack:
1. Backend Languages & Frameworks
● Primary: Node.js (Express, NestJS), Python (FastAPI, Django)
● Secondary: Go, Java/Kotlin (Spring)
● APIs: REST, GraphQL, gRPC
2. Databases & Storage
● SQL: PostgreSQL, MySQL
● NoSQL: MongoDB, DynamoDB
● Caching: Redis, Memcached
● Search: Elasticsearch, Algolia
● Storage/CDN: AWS S3, CloudFront
● Queues: Kafka, RabbitMQ, AWS SQS
3. Cloud & Infrastructure:
● Cloud: AWS (primary), GCP/Azure (nice to have)
● Compute: EC2, Lambda, ECS, EKS
● Infrastructure: Terraform, CloudFormation
● CI/CD: GitHub Actions, Jenkins, CircleCI
● Containers: Docker, Kubernetes
4. Monitoring & Operations
● Monitoring: Datadog, New Relic, CloudWatch
● Logging: ELK Stack, CloudWatch Logs
● Error Tracking: Sentry, Rollbar
● APM tools
5. Security & Auth
● Auth: JWT, OAuth 2.0, SAML
● Secrets: AWS Secrets Manager, Vault
● Security: Encryption (at rest/in transit), TLS/SSL, IAM
What We’re Looking For:
1. Must-Haves
● 5+ years in backend engineering with strong system design expertise
● Experience building scalable systems from scratch
● Expert-level proficiency in at least one backend stack (Node, Python, Go, Java)
● Deep understanding of distributed systems and microservices
● Strong SQL/NoSQL design skills with performance optimization
● Hands-on AWS cloud experience
● Ability to write high-quality production code daily
● Experience building and scaling RESTful APIs
● Strong understanding of caching, sharding, horizontal scaling
● Solid security and best-practice implementation experience
● Proven leadership and mentoring capability
2. Highly Desirable
● Experience with large file processing (3D, video, images)
● Background in SaaS, multi-tenancy, or e-commerce
● Experience with real-time systems (WebSockets, streams)
● Knowledge of ML/AI infrastructure
● Experience with HA systems, DR planning
● Familiarity with GraphQL, gRPC, event-driven systems
● DevOps/infrastructure engineering background
● Experience with XR/AR/VR backend systems
● Open-source contributions or technical writing
● Prior senior technical leadership experience
Technical Challenges You’ll Solve:
● Designing large-scale 3D asset processing pipelines
● Serving XR content globally with ultra-low latency
● Scaling from thousands to millions of daily requests
● Efficiently handling CPU/GPU-heavy workloads
● Architecting multi-tenancy with complete data isolation
● Managing billions of analytics events at scale
● Building future-proof APIs with backward compatibility
Why company:
● Architectural Ownership: Build foundational systems from scratch
● Deep Technical Work: Solve distributed systems and scaling challenges
● Hands-On Impact: Design and code mission-critical infrastructure
● Diverse Problems: APIs, infra, data, ML, XR, asset processing
● Massive Scale Opportunity: Build systems for exponential growth
● Modern Stack and best practices
● Product Impact: Your architecture directly powers millions of users
● Leadership Opportunity: Shape engineering culture and direction
● Learning Environment: Stay at the forefront of backend engineering
● Backed by AWS, Microsoft, Google
Location & Work Culture:
● Location: Bengaluru
● Schedule: 6 days a week, (5 days-in-office, Saturdays WFH)
● Culture: Builder mindset, strong ownership, technical excellence
● Team: Small, highly skilled backend and infra team
● Resources: AWS credits, latest tooling, learning budget
Experience in Core Java and Spring Boot.
• Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns.
• Should have the ability to analyze, design, develop and test complex, low-latency clientfacing applications.
• Good development experience with RDBMS.
• Good knowledge of multi-threading and high-performance server-side development. • Basic working knowledge of Unix/Linux.
• Excellent problem solving and coding skills.
• Strong interpersonal, communication and analytical skills.
• Should have the ability to express their design ideas and thoughts.
Please find the attached study material.
Data structure and Algorithms-
1. Basic Strings, Array and Mathematical based problems.
2. Sliding window problems
3. Problems solved using HashMap, Set and Stack.
About the role:
You will own a functional area - from product conception to its delivery to customers. You are expected to design and code independently in multiple tech components related to your functional area. You must also develop a deep understanding of non-functional requirements, such as reliability and availability, scale, horizontal scalability, etc. over time to make tech stack decisions accordingly. You are expected to actively mentor junior engineers. You own
the codebase quality.
We are looking for seasoned engineers who are quality-conscious, product thinkers, business cognizant and smart. Engineers get to significantly amplify the impact of their work or creations with scale. The scale also demands that engineers to produce super-efficient solutions.
What you’ll do
- Strong experience with Java 8, Spring and Spring Boot, Spring MVC, Spring Data,
- Working experience in Microservices
- Version Control: Git
- Strong understanding of functional/reactive programming, OOP, design
- Experience with Docker and Kubernetes.
- SDLC: Working experience in Agile methodology
- Strong interpersonal skills and time management skills
What you’ll need
- B.Tech or M.Tech equivalent with at least 3 years of experience
- Deep expertise in at least one programming language & tech stack.
- Strong object-oriented design skills, ability to apply design patterns, and an uncanny ability to design intuitive module and class-level interfaces
- Experience in building data-driven web application design and development is a plus
- Good understanding of multiple tech solutions and ability to pick the correct one for the given situation
- Prior work experience in an agile environment or continuous integration and continuous delivery (CI or CD)
- Ability and experience in designing high-level software designs of the scalable system, taking NFR (non-functional requirement) into consideration
Job Title: Java Developer
Location: India
Company: Hutov
About Us: [Your Company Name] is a leading [industry] company dedicated to [brief description of what your company does]. We are committed to delivering high-quality solutions and exceptional service to our clients. Join our team of talented professionals and contribute to our mission of [your company's mission].
Job Description: We are seeking a skilled and motivated Java Developer with 3-5 years of experience to join our dynamic team. The ideal candidate will have a strong background in Java development and a passion for building efficient, scalable, and high-performance applications.
Key Responsibilities:
- Design, develop, and maintain high-quality Java applications.
- Collaborate with cross-functional teams to define, design, and ship new features.
- Write clean, maintainable, and efficient code.
- Ensure the performance, quality, and responsiveness of applications.
- Identify and correct bottlenecks and fix bugs.
- Help maintain code quality, organization, and automation.
- Participate in code reviews and provide constructive feedback to team members.
- Stay updated with the latest industry trends and technologies to ensure the company remains competitive.
Required Skills and Qualifications:
- Bachelor's degree in Computer Science, Engineering, or a related field.
- 3-5 years of experience in Java development.
- Strong knowledge of Java SE (Standard Edition) and Java EE (Enterprise Edition).
- Experience with popular frameworks such as Spring, Hibernate, and Struts.
- Proficient in database technologies such as SQL, MySQL, Oracle, or PostgreSQL.
- Experience with RESTful API design and development.
- Familiarity with front-end technologies like HTML, CSS, and JavaScript.
- Strong understanding of object-oriented programming principles and design patterns.
- Excellent problem-solving skills and attention to detail.
- Ability to work independently and as part of a team.
- Good communication skills, both written and verbal.
Preferred Qualifications:
- Experience with cloud platforms like AWS, Azure, or Google Cloud.
- Knowledge of containerization technologies such as Docker and Kubernetes.
- Familiarity with DevOps practices and tools such as Jenkins, Git, and CI/CD pipelines.
- Understanding of Agile methodologies and experience working in an Agile environment.
Benefits:
- Competitive salary and benefits package.
- Opportunities for professional growth and development.
- Flexible work hours and remote work options.
- Health, dental, and vision insurance.
- Paid time off and holidays.
- Collaborative and inclusive work environment.
B.Tech./ BE - Computer, IT, Electronics only
Requirements:
- 3+ year of experience in Development in JAVA technology.
- Strong Java Basics
- SpringBoot or Spring MVC
- Hands on experience on Relational Databases (SQL query or Hibernate) + Mongo (JSON parsing)
- Proficient in REST API development
- Messaging Queue (RabitMQ or Kafka)
- Microservices
- Any Caching Mechanism
- Good at problem solving
Skills:
- 3+ years of experience in using Java/J2EE tech stacks
- Good understanding of data structures and algorithms.
- Excellent analytical and problem solving skills.
- Ability to work in a fast paced internet start-up environment.
- Experience in technical mentorship/coaching is highly desirable.
- Understanding of AI/ML algorithms is a plus.
- Java
Agile and Kafka
Microservices
Springboot
NoSQL/MongoDB
Scrum
Job Description
- Design & implement backend APIs
- Mentor junior developers technically.
- Actively work to reduce tech debt in the backend
- Work towards more stability & scalability of the backend
- Tech stack - Java, AWS etc.
Eligibility
- 2-8 years of product company experience
- Advanced understanding of AWS stack
- Prior knowledge of solving problems at scale.
- 0 to 2 years of experience into Java 6/7/8, J2EE, EJB, Servlets, JSP, JDBC, LOG4J, SQL, PL/SQL, XML, XSLT, JSON,
- Good to have strong experience in Core Java SpringBoot, Spring framework
- knowledge of Spring MVC, Spring REST, JDBC Templates
- Knowledge of Java/J2EE Design patterns
- knowledge of implementation of WebServices like REST will be added advantage
- Good knowledge of Relational Databases like MySQL, PostgreSQL, MS SQL Server with complex SQL Queries, Stored Procedure, Triggers
- Knowledge of Unit Test Cases is added advantage
- Knowledge of build tools like Maven, Gradle, Ant
- Knowledge of any one or more of MongoDB, Cassandra, Neo4J, Redis, Kafka, ActiveMQ, Caches, Microservices will be a major plus
- Good to have knowledge of ORM like Hibernate
- Knowledge and experience in nodejs backend will be added advantage
Requirements :
- Must be a good team player and self-motivated Individual
- Very Strong analytical abilities and interpersonal skills
- Strong verbal and written communication skills with other developers and business clients
- High commitment levels







