Java Developer

Job Title : Node.js Developer

Experience : 5+ Years

Location : Gurgaon – Sector 43

Work Mode : 5 Days Work From Office (WFO)

Interview Mode : Direct Walk-in

Job Summary :

We are looking for an experienced Node.js Developer with 5+ years of hands-on experience in backend development and building scalable applications.

The ideal candidate should have strong problem-solving skills and experience working in a fast-paced product or service-based environment.

Key Responsibilities :

• Develop and maintain server-side applications using Node.js.
• Design and implement RESTful APIs and microservices.
• Work with databases like MongoDB / MySQL / PostgreSQL.
• Integrate third-party APIs and services.
• Ensure performance, security, and scalability of applications.
• Collaborate with frontend developers, QA, and DevOps teams.
• Write clean, reusable, and efficient code.
• Participate in code reviews and technical discussions.

Required Skills :

• Strong expertise in Node.js and JavaScript.
• Experience with Express.js or similar frameworks.
• Knowledge of Microservices architecture.
• Hands-on experience with MongoDB / SQL databases.
• Experience with Git and CI/CD processes.
• Good understanding of cloud platforms (AWS preferred).
• Strong debugging and optimization skills.

Preferred Skills :

• Experience with Docker / Kubernetes.
• Knowledge of Redis, Kafka, or message queues.
• Understanding of Agile methodologies.

This Is NOT a Typical Java Role If your experience is mostly CRUD APIs, controller wiring, or shallow service layers — this role is not for you. We are looking for a top tier backend engineer who thrives on: 

* Designing complex algorithms 

* Building high-performance, memory-efficient systems 

* Owning deep backend logic that actually moves the needle 

You will work close to the core engine of the product, not the edges.

What You’ll Be Trusted With 

* Architect and build backend systems that must perform under load 

* Design and implement custom algorithms for real-world, non-trivial problems 

* Solve performance bottlenecks involving CPU, memory, I/O, and concurrency 

* Build backend services where latency, throughput, and correctness matter 

* Own document & PDF processing pipelines end-to-end:     

-Composition     

-Rendering     

-Optimization     

- High-volume generation 

* Make hard technical decisions and stand by them

Non-Negotiable Skills 

* Exceptional Java expertise (Core Java, Spring Boot, Java 8+) 

* Strong command over:     

• Data structures & algorithms 
• Multithreading & concurrency models     
• JVM internals & memory management 

* Proven experience building custom algorithms (this will be evaluated) 

* Deep backend engineering experience with Spring / Spring Boot 

* Strong understanding of:     

• API design principles     
• Fault tolerance & resilience     
•  Performance tuning & profiling 

* Ability to reason about time complexity, space complexity, and trade-offs 

* Strong database fundamentals (query optimization, indexing, transactions) 

* Experience with message brokers (ActiveMQ, Kafka, RabbitMQ) 

* Exposure to Kubernetes-based deployments or large-scale microservices 

Interview Focus (Be Prepared) 

* Algorithm design & problem solving 

* Deep Java fundamentals 

* System design discussions (backend-heavy) 

* Performance tuning scenarios 

* Real-world debugging and optimization challenges

Roles & Responsibilities :

• You’ll work as part of the software engineering team along with other front-end, back-end, mobile app, QA teams & you will also closely work with the founder.
• You should be able to take the ownership of a project end to end.
• Your primary focus will be to build, implement & maintain the complete back-end stack of the product.
• You will create production grade code and will implement the solutions which run bug free.
• Participate in product development discussions and product development road-maps.
• Collaborate with members across departments to identify and build on improvements to product, process and systems.
•  
• Required Experience and Qualifications:

• 2 to 6 years of software development experience.
• Experience of working on application architecture design will be preferred.
• Experience of working in at least 1 or 2 projects, managing or leading the entire tasks.
• Experience in Docker/Kubernetes, Agile methodologies & CI/CD  automation process.
• Knowledge of Queueing technologies like Kafka, RabbitMQ, ActiveMQ, Version control using Git.
• Experience in microservices architecture, in-memory systems like Redis and basic knowledge of Linux/Unix systems.
• Experience of building applications processing large volumes of streaming data will be preferred.
• Experience from a middle size company or from a startup will be preferred.
• BE/MCA/MSc in Computers/Information technology with a good academic record.

Key Skills:

• Java, & Spring boot
• Hibernate
• Spring Boot JPA
•  Object Oriented Programming
• MySQL & MongoDB
• Jenkins

Perks & Benefits:

• Great learning, innovative and development platform.
• Remote work and flexible timings.
• Reimbursement of the online learning courses on certification.
• Medical insurance coverage for you and the dependence.
• Five Working days per week.

Biddano  is seeking for an analytical, result driven, multi-skilled candidate  for design for the position of Backend Developer. He/She will be responsible for  programming languages and tools to analyze current codes and industry developments, formulate more efficient processes, solve problems and create a more seamless experience for users.

 The ideal candidate will have strong personal accountability for results, strong commitment to teamwork in support of the company's success, adherence to ethical business practices, and comfort operating in a start-up environment with an ability to prioritize and drive actions to closure.

a start-up environment with an ability to prioritize and drive actions to closure.

Backend Developer

Responsibilities:

• Participate in the entire application lifecycle, focusing on coding and debugging
• Write clean code to develop functional REST APIs Using Django/Python or NodeJs
• Troubleshoot and debug applications
• Perform unit test cases to optimize performance
• Manage cutting-edge technologies to improve legacy applications
• Collaborate with Front-end developers to integrate user-facing elements with server side logic
• Gather and address technical and design requirements
• Provide training and support to internal teams
• Build reusable code and libraries for future use
• Liaise with developers, designers and system administrators to identify new features
• Follow emerging technologies

Skills Required:

• Proven work experience as a Back-end developer
• In-depth understanding of the entire web development process (design, development and deployment)
• Hands on experience with programming languages like Python (Required), typescript(Required),  Java.
• Working knowledge of CMS framework
• Familiarity with back-end languages (e.g. HTML, JavaScript and CSS)
• Excellent analytical and time management skills
• Backend:
• Django/DjangoREST, Python (Prefered) or NodeJs. 
• Good experience of microservices. 
• Hosting and Deployment Solutions:
• Good understanding of AWS which includes(All required):
• Good expertise in Linux.
• EC2 instance management.
• Scalability (Horizontal or Vertical) which includes autoscaling.
• Proper use of S3 for static file management. 
• SNS or AWS email service.
• AWS resource cost optimization. 
• Proper knowledge of Load Balancers.
• Teamwork skills with a problem-solving attitude

Experience :

• Minimum 4-7 years of  experience as a Backend Developer 
• B.tech Computer Science, Engineering or similar relevant field

Equal parts creative agency, engineering firm, and consultancy, Grappus has a reputation of doing things differently. We work with brands big and small, far and wide, helping them understand, prototype and deploy a broad range of custom tech. We value design and we cringe at bad UX. Each project is a clean slate, we don’t have frameworks, or any pre-made formulas. We’re not here to just grow big, make money and win awards. We’re here to crack the process of building truly innovative products from scratch. Products that make people say ‘damn’.

People at Grappus usually experience a highly accelerated career growth well beyond the narrow constraints of their ‘job description’. Here, the growth ladder is tailored to you. It operates exactly as fast as you can manage to grow. We think it's a waste when smart people are unable to make an impact. Our aim is to unleash your potential by giving you massive challenges and the freedom to solve them.

We’re in a fluid world, where we don’t know what technologies we’ll use next, or the projects we’ll work on. We’re actively searching for ways to shine a light on our blind spots, whether it is in the products we want to build, the problems we like to solve, or the company culture we try to create. That’s what makes life at Grappus so exciting. Grappus is an ongoing experiment and you are a part of it. We'll be a different company a few years from now because you are going to change it for the better. We can’t wait to see where you take us

Learn more about us: https://grappus.com/">https://grappus.com/

We are seeking a Senior Java Developer who has a knack for coming up with creative solutions to unique problems, planning development cycles and writing technical documentation while leading a team of developers. You can get in where needed to write clean, reusable, and performant code, with creative sensibilities to push projects towards perfection. You should have good time management skills and be able to work both autonomously and collaboratively with a cross-discipline team of product managers, strategists, UX designers, art directors, and developers. Most importantly, you have an eye for detail and the ability to make beautiful designs come to life through code.

• Ability to write elegant and readable code
• Excellent problem solving skills and love technical challenges
• Comfortable working in a team-oriented and collaborative environment
• Strong understanding of Agile and Lean software development processes and practices
• Stays plugged into emerging technologies/industry trends and applies them proactively
• Knowledge of software best practices, like test driven development and continuous integration

• BE/BTech in Computer Science or a related field or equivalent practical experience

• 2+ years of software development experience including deep, hands on experience in building back end applications using Java and Spring ecosystem
• Strong command over core Java:
  • Understands the application of java best practices including logging & exception handling
  • Familiar with the Java Concurrency model
  • Understands Java collections, generics and java 8 based functional programming features
• Has extensively used the Spring ecosystem:
  • Spring Boot
  • HTTP/REST API development
  • Spring Data (JPA)
  • ORM tools like Hibernate (can fine tune mappings for performance)
  • Unit and integration testing facilities of Spring Boot
• Experience coaching and mentoring junior developers
• Aggressive problem diagnosis and creative problem solving skills and client handling skills
• Ability to work and thrive in a fast-paced environment, learn rapidly and master diverse web technologies and techniques
• Excellent knowledge of Relational Databases, SQL and ORM technologies (JPA2, Hibernate)
• Implemented CI/CD in any of the projects done and experience with Test Driven Development

• Understanding of API Development best practices
• Knowledge of Kubernetes/Docker and Devops
• Some or all of these AWS services: EC2/ECS; lambda; SQS/SNS; API Gateway, Cognito; Elastic Search
• Has contributed to the development or enhancement of CI/CD pipelines in a previous project
• Contributed in the creation of end-end automation tests (functional or non-functional)
• Has designed relational databases; conversant with SQL
• Personal projects or contributions to the open source community
• Strong organizational skills to juggle multiple tasks within the constraints of timelines
• Team player (those great personality types that people love to work with)
• Great communication skills