Key Responsibilities
- Frontend Development: Designing and building responsive, interactive user interfaces using React.js, HTML5, CSS3, and modern JavaScript (ES6+).
- Backend Development: Developing robust, scalable server-side applications and microservices using Java and the Spring Boot framework.
- API Integration: Creating and consuming RESTful APIs to ensure seamless communication between the React frontend and the Java backend.
- Database Management: Designing and optimizing database schemas and queries using SQL (e.g., MySQL, PostgreSQL, Oracle) or NoSQL (e.g., MongoDB) databases.
- State Management: Managing application state in React using tools like Redux, Hooks, or Context API.
- Testing & Quality Assurance: Writing unit and integration tests using frameworks such as JUnit for backend and Jest or React Testing Library for frontend.
- DevOps & Deployment: Collaborating on CI/CD pipelines and using containerization tools like Docker and Kubernetes for application deployment.
- Indeed
- +14
Required Skills & Qualifications
- Core Technical Skills:
- Deep proficiency in Java (8+) and the Spring ecosystem (Spring Boot, Spring Security, Spring Data JPA).
- Expertise in React.js workflows, component-based architecture, and hooks.
- Strong understanding of Microservices architecture and cloud platforms (AWS, Azure, or GCP).
- Experience & Education:
- Typically requires a Bachelor's degree in Computer Science or a related field.
- Proven experience (often 1–5+ years depending on seniority) in full-stack development.
- Tools: Version control systems like Git, build tools like Maven or Gradle, and Agile project management tools like Jira.
- Indeed
- +13
Typical Salary Ranges (India)
- Freshers: ₹3.8 Lakh to ₹12 Lakh per year.
- Experienced (5+ years): ₹18 Lakh to ₹30 Lakh+ per year.
- Average (General): Approximately ₹29 Lakh per year for high-demand specialized roles.

About AppyHappy Software
About
Similar jobs
ey Responsibilities:
- Design, develop, and maintain microservices using Java (Spring Boot).
- Implement RESTful APIs and ensure integration with front-end and third-party services.
- Work with AWS services such as EC2, ECS, Lambda, S3, RDS, API Gateway, CloudWatch, etc.
- Utilize CI/CD pipelines (Jenkins / GitHub Actions / AWS CodePipeline) for deployment automation.
- Implement security, scalability, and high availability best practices in microservice architecture.
- Collaborate with DevOps, QA, and Product teams to deliver robust solutions.
- Monitor and troubleshoot production issues using AWS CloudWatch / ELK / Prometheus & Grafana.
- Participate in code reviews, design discussions, and agile ceremonies.
Required Skills & Qualifications:
- Strong proficiency in Java 8+, Spring Boot, Spring Cloud, and RESTful APIs.
- Solid understanding of microservices architecture and service discovery / communication patterns (Eureka, Feign, Ribbon, etc.).
- Hands-on experience with AWS Cloud (ECS, Lambda, API Gateway, RDS, DynamoDB, S3, CloudFormation).
- Experience with Docker and Kubernetes for containerization and orchestration.
- Proficient in RDBMS / NoSQL databases (MySQL, PostgreSQL, MongoDB).
- Familiar with CI/CD pipelines, Git, and DevOps best practices.
- Knowledge of message brokers (Kafka, RabbitMQ, SQS) is a plus.
- Strong debugging, problem-solving, and analytical skills.
Oister Global (www.oisterglobal.com) is India’s premier Alternative Assets Manager. We combine robust diligence, deep domain expertise, and an extensive network to create high quality private market opportunities for our investors.
We are seeking a Senior Backend Developer who will be pivotal in architecting and developing scalable, reliable backend systems from scratch. You will work closely with product managers, designers, and other engineers to build new products, design backend architectures, and ensure high performance and responsiveness of the systems. This role requires strong backend fundamentals, cloud experience, a deep understanding of databases, and a passion for system design and architecture.
Key Responsibilities:
● Product Development: Architect, design, develop, test, and deploy new backend products and features from scratch.
● System Design: Take ownership of system design and architecture decisions for new modules, ensuring scalability, reliability, and security. ● API Development: Build efficient and reusable APIs and backend services using Node.js.
● Database Management: Design data models, optimize queries, and manage MongoDB clusters efficiently.
● Cloud Management: Deploy, maintain, and optimize services on AWS, ensuring high availability and performance.
● Best Practices: Maintain coding standards, ensure code reviews, and champion best practices in security, testing, and maintainability.
● Collaboration: Work closely with frontend developers, product managers, QA, and other cross-functional teams to define, design, and ship new features.
● Performance Optimization: Monitor system performance and ensure system uptime and responsiveness.
● Mentorship: Provide guidance and mentorship to junior developers as required.
● Documentation: Maintain thorough documentation of systems, processes, and best practices. Must-Have
Qualifications:
● Education: Bachelor’s degree in computer science, Software Engineering, or a related technical field.
● Experience: 4–5+ years of hands-on backend development experience.
● Expertise in: Node.js (Express.js, Nest.js or similar frameworks) MongoDB (including indexing, replication, sharding concepts) AWS Services (EC2, S3, Lambda, RDS, API Gateway, CloudWatch, IAM, etc.) Proficient in: System design principles Microservices architecture Event-driven architecture Strong understanding of: RESTful APIs.Authentication and authorization best practices (OAuth, JWT) Experience with: CI/CD pipelines Docker and containerization principles Hands-on experience in: Building scalable, distributed, and fault-tolerant systems Good knowledge of : Logging, monitoring, and debugging distributed applications
Job description
Strong experience with Laravel Framework
Experience in databases like MySQL
Experience in HTML, JavaScript, CSS, Angular/ReactJS/VUEJS, JQuery, Bootstrap, JSON
Requirement
Minimum 3+ years of Laravel Experience - building database-driven applications
Knowledge of Event Driven Architecture, Microservices, etc
Basic knowledge of Dev-ops - AWS, Github- Familiarity
Should have Excellent Experience of Node.js.
In-Depth knowledge of Express Js, JavaScript, TypeScript,
Should have experience in MongoDB, My SQL, GraphQL and any graph Database
Experience working with REST APIs, and Sockets.
Ability to Identify and fix production and non-production application issues as a part of the deployment.
Good Knowledge of AWS - Beanstalk, Cloud Watch.
Good to have Agile/JIRA/ Continuous Deployment experience.
Good Knowledge of JSON, API, and JWT
Ability and willingness to manage multiple projects/tasks.
Basic Understanding of HTML5, CSS.
Job Responsibilities:
Understanding accessibility and security compliance (Depending on the specific project)
User authentication and authorization between multiple systems, servers, and environments.
Integration of multiple data sources and databases into one system
Understanding fundamental design principles behind a scalable application.
- As a polyglot developer Ideally, you should have:
- 1.5+ years of development experience using any of technology java, scala, python or any similar exciting technologies.
- Hands-on experience in coding, and implementation of complex, custom-built applications Working knowledge of build tool like maven/sbt and code versioning systems like git/bitbucket/cvs/svn
- Familiarity with few databases, like MySQL, Oracle, PostgreSQL, SQL Server, NoSQL etc Great OO skills, including strong design patterns knowledge
- Good communication and ability to work in a consulting environment is essential
- Think through hard problems in a consultancy environment, and work with amazing people to make the solutions a reality Work in a dynamic, collaborative, non-hierarchical environment where your talent is valued over your job title or years of experience
- Build custom software using the latest technologies and tools Craft your own career path
- Providing solution to real problems in Bigdata world.
- RnD on using the latest tools,techniques and cloud services.
- Automating the manual-timetaking tasks.
- Hands-on coding, usually in a pair programming environment.
- Working in highly collaborative teams and building quality code
- Working in lots of different domains and client environments
- Understanding the business domain deeply
We are a team of technology agnostic, passionate people who aim to provide solution to real world Bigdata problems.
We are building solutions that will help our customers to do automatic migration of their RDBMS systems to latest BIGDATA platforms and tools such as Spark, Apex, Flink etc. For more information do visit our products webpage.
- 2+ years of experience on Java, Spring Boot, Hibernate in medium to large-scale projects
- Must have experience with at least some flavours of both SQL (MySQL, Postgres) and NoSQL (Kafka, MongoDB, ElasticSearch, NoSQL distributed cache system, DynamoDB etc), datastores in production
- Must have experience with Kafka or similar message queue systems in production
- Stellar problem solving skills
- Hunger to learn new things and ability to grasp new concepts quickly
- Ability to move quickly without breaking things too much (we are dreamers)
- Ability to work under immense pressure which is balanced by a sense of responsibility and ownership
- Should be able to groom juniors and take them to the next level
- Utilize established development tools, guidelines and conventions including but not limited to ASP.NET, SQL Server, HTML, CSS, JavaScript, and C#/VB.NET
- Prepare and maintain code for various .Net applications and resolve any defects in systems.
- Prepare test-based applications for various .Net applications
- Enhance existing systems by analyzing business objectives, preparing an action plan and identifying areas for modification and improvement
- Manage defect tracking system and resolve all issues and prepare update for systems
- Investigate and develop skills in new technologies
- Create technical specifications and test plans
- Monitor everyday activities of system and provide require support
Technical Skills
- Required experience in .Net Core 2.2 and above, Web API, EF, AWS or Azure Cloud
- Familiarity with the ASP.NET framework, SQL Server and design/architectural patterns (e.g. Model-View-Controller (MVC))
- Knowledge of at least one of the .NET languages (e.g. C#, Visual Basic .NET) and HTML5/CSS3
- Familiarity with architecture styles/APIs (REST, RPC)
- Snaplogic (both ground and cloud plex ) or Biztalk ( basic administration , simple xlt translations, and Api management ) or any other similar tool
- Update to .net 50 and Microsoft CORE 30 general coding practices
- Visual Studio use for C#
- Shared library through Nugget
- Unit Test / Test driven methods (use of Xunit and MOCK )
- Concepts of “;” service threading, caching, injection, NTier and entity
- GIT repository (Gitflow branching strategies )
- Azure DevOps pull requests, commitments and Task usage
- SQL artifact writing (sprocs, tables, triggers , indexes, FKs ,and PKs)
- SQL understanding of relational database models
- Should have good problem-solving abilities
- Should be able to troubleshoot issues and determine the cause of a plan’s success or failure
- Should keep up to date with changes in the market and technology that would affect
- Good interpersonal and communication skills
- Comfortable to work as per client requirements/time zones
- Should possess strong team handling experience
Building highly-scalable and secure payments platform
Primary owners of one or more components of the platform and will drive
innovation in your area of ownership
Working with various product teams gathering requirements and adding capabilities
Working with some of the smartest people in the industry and will have ample
opportunity to learn and grow
Using cutting-edge cryptography to secure payments beyond industry standards
Deriving actionable insights by mining TBs of data
Building low-level infrastructure that aims to push the boundaries of network
performance
Participating actively in recruitment and nurturing of engineers as awesome as you.
What do we look for?
If you spend time cracking NP hard problems rather than cracking nuts, you are the
most laziest person and automates everything, you appreciate beauty of code
(bonus if you can sing “Finite simple group of order 2”), you should apply in t=0
Good understanding of Databases
Good understanding of networking (especially with HTTP)
Good understanding of OS concepts
2-4 years of experience
Should have hands on development experience with Object Oriented Programming
(Java is highly preferred) on a large scale system
Understands and showcase ownership of the products
Good with concepts of scaling and worked with distributed systems
Review and influence new evolving design, architecture, standards and methods
with stability, maintainability and scale in mind
Identify patterns and provide solutions to class of problems
Research, evaluate and socialize new tools, technologies, and techniques to improve
the value of the system
Be able to multi-task, prioritize and handle dependencies with minimal oversight













