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Role Overview
We are looking for an experienced Node.js Developer with deep expertise in backend engineering and related frameworks. The ideal candidate will be a strong problem solver, effective communicator, and proven mentor capable of leading development initiatives while ensuring code quality, scalability, and performance optimization.
Key Responsibilities
- Lead and contribute to multiple backend development projects ensuring high-quality delivery.
- Collaborate with business analysts, architects, and cross-functional teams to define technical specifications and gather requirements.
- Design and implement scalable, secure, and high-performance applications using Node.js and related frameworks.
- Develop detailed HLD (High-Level Design) and LLD (Low-Level Design) solutions.
- Mentor and guide junior developers, fostering knowledge sharing and growth.
- Participate in peer code reviews, ensuring adherence to best practices and coding standards.
- Optimize performance, concurrency, and scalability of applications.
- Implement CI/CD pipelines and ensure smooth deployment processes.
- Support and troubleshoot production issues, providing L3 support as required.
- Continuously research, evaluate, and integrate new technologies to improve applications and processes.
- Establish and enforce engineering best practices within the team.
- Actively participate in recruitment and talent-building initiatives.
Required Skills & Qualifications
- 5–10 years of strong professional experience in Node.js and frameworks like Express.js.
- Proficiency in MERN stack (preferred but must be heavy on Node.js).
- Strong understanding of multi-threading, concurrency, and performance optimization.
- Solid debugging, troubleshooting, and performance profiling expertise.
- Hands-on experience with source control systems (Git) and CI/CD environments.
- Familiarity with Agile methodologies (Scrum/Kanban).
- Strong knowledge of object-oriented and service-oriented application development.
- Excellent communication, leadership, and collaboration skills.
- Proven ability to work independently and in team settings with high ownership.
Minimum 3+ Years of Core Java Programming with Collections Framework, Concurrent Programming, Multi-threading (Good knowledge in Executor service, Fork joins pool and other threading concepts)
· Good knowledge of the JVM with an understanding of performance and memory optimization.
· Extensive and expert programming experience in JAVA programming language (strong OO skills preferred).
· Excellent knowledge on collections like, Array List, Vector, LinkedList, HashMap, Hash Table, HashSet is mandate.
· Exercised exemplary development practices including design specification, coding standards, unit testing, and code-reviews.
· Expert level understanding of Object-Oriented Concepts and Data Structures
· Good experience in Database (Sybase, Oracle or SQL Server) like indexing (clustered, non-clustered), hashing, segmenting, data types like clob / blob, views (materialized), replication, constraints, functions, triggers, procedures etc.
• Hands on RDBMS experience with Oracle/ PostgreSQL/ MySQL/SQL
Server including transaction management, SQL programming, data
modelling, etc.
• Must have proven track record of logical data modeling and physical
data modeling
• Experienced in using ORM frameworks like Hibernate, etc.
• Basic understanding of NoSQL systems like Redis (Key-Value store),
MongoDB (Document store), Elasticsearch (Search / Document store)
• Design, Development & Deployment of Microservices using Spring
Boot or any other framework.
• Understanding of building EDA-based (Event Driven Architecture)
systems.
• Basic understanding of any public cloud (AWS, Azure, GCP)
• Ability to design & architect a system that exhibits basic
characteristics like modularity, configurability / extensibility, scalability
& availability.
• Maven / Gradle
• Experience in using & configuring Jenkins.
• Experience in using & configuring SonarQube.
Essential Requirements
• Hands-on with Java Platform (1.5 & above) having proficiency in OOPs
concepts, Collections,
• Generics, Streams, Multi-threading (Executor Framework), Functional
Programming.
• Design & Development of REST Web Services (Spring MVC / REST /
Jersey / Apache CXF, etc.)
• Hands-on experience using Spring framework (4.x & above)
• Core / Beans
• MVC / REST
• Security
• Spring Data / JPA
• Spring Test / JUnit
• JMS
- Selecting the tech stack, programming language, and framework
- Working on Solution architecture, and software development.
- Improving and optimizing the application architecture
- Developing APIs
- Handling Application management, including ongoing support, bug fixes, patches, minimal enhancements code refactoring, etc., maintaining infrastructure (3 rd party hosting/ servers, storage, memory, etc.)
- Managing Network security, data security
- Designing and developing databases and applications that pool, extracting and analysing large amounts of data to provide management with insights on the overall performance of the organization as well as information on markets and competitors.
- Creating dashboards and developing data collection methods.
- Debugging and QA
- Managing vendor relationships
- Managing third-party services used in the application
- Building a deployment pipeline to deliver updates safely and regularly.
- Planning software releases, Managing releases (safe and downtime-proof), tags, and versions, software releases
What you need to have:
- B. Tech in Computer Science or an MCA from a good college
- Minimum 5 years of experience
- Preferably based in Gurgaon. If not, relocation would be required since a lot of hustling and discussions will require physical meetings with the Founders.
- Should know the ins and outs of the software development life cycle
- Experience of designing, architecture, coding, testing, debugging and documenting for both front end and back end applications
- Must have knowledge about development technology like PHP, jQuery, Java script,
HTML, CSS3, JSON, XML, Bootstrap. Third party plugins, Android studio, etc. - Must have knowledge of frameworks such as Laravel, Cake
- Good knowledge of databases (MySQL), version control tools like GitHub, etc.
Job Title: Java Team Lead
Experience: 4.5 to 8 years
Notice Period: Up to 30days (Negotiable)
Job Description :
- Experience in Java/J2EE technologies - design development of high-volume, high-performance, high-availability, service-oriented applications
- Design and govern the reusable accelerators, design patterns and reusable technical components (e.g. error handling, logging etc.)
- Strong knowledge in developing scalable web applications using Spring Boot with JDBC, JPA, Security, RESTful Web Services
- Experience in front end development using HTML5, JQuery, React JS or Angular
- Research and implement new tools, frameworks and patterns to build a hybrid cloud applications
- Strong knowledge in Database – MySQL / PostgreSQL
- Knowledge of deploying applications in Ubuntu on Cloud Infrastructure
- Knowledge of Docker and Kubernetes for automatic application deployment will be an added advantage
- Lead a team and provide technical knowledge to team members during development
Roles & Responsibilities
- Understand the Requirement
- Convert them into Document
- Deliver the Work Product (software components / modules) with Quality
- High level design & Defining Architecture
- Following Coding best practices
The database market is massive (the IDC estimates it to be $119B+ by 2025!) and MongoDB is at the head of its disruption. The MongoDB community is transforming industries and empowering developers to build amazing apps that people use every day. We are the leading modern data platform and the first database provider to IPO in over 20 years. Join our team and be at the forefront of innovation and creativity.
MongoDB is expanding our global team of consulting engineers to further our ongoing plans for worldwide growth!
MongoDB Professional Services works with customers of all shapes and sizes in all verticals, from tier-1 banks to small web startups, on a variety of interesting use cases from e-commerce platforms to trading systems to social media applications. Solve interesting problems, gain incredible cross-stack experience, work with the best and brightest people in the business, network with industry leaders, and see new places - all in a day’s work!
MongoDB consulting exists to support the development of our customers’ vision, accelerate customers’ time to value, and drive a multitude of customer adoption scenarios - from building new solutions to modernizing legacy applications or migrating to the cloud. Our consulting solutions ensure that organizations get the best out of MongoDB.
Be one of the recognized experts in this rapidly growing field in a high-growth software company successfully challenging the status quo of the database industry.
Shift Timing
You will get an opportunity to work with Global customers (APAC, EMEA, and North America) So this would require you to work in monthly rotational shifts.
This role can be based out of our Gurugram/Bangalore Office or remotely in the India region.
Candidate Profile
We’re looking for a highly technical individual, with strong problem-solving and communication skills, and is comfortable working closely with customers.
Our ideal candidate will have
- Excellent analytical, diagnostic skills, and problem-solving skills
- High motivation for a role that combines deep technical and customer-management dimensions
- Confidence speaking and presenting in a collaborative customer setting
- 4+ years of software development/consulting/support experience, preferably in a number of distinct industries/verticals
- Familiarity with enterprise-scale software architectures, application development methodologies, and software deployment and operations
- Competence in at least one of the following languages (in no particular order): Java, C#, Python, Node.js (JavaScript), Ruby, Go.
- Experience with databases such as MongoDB, Oracle, MS SQL Server, PostgreSQL
- Familiarity with Linux diagnostics and tuning; Windows tuning knowledge is a plus
- Should have the strong capability with, minimally, both English and any local language - as necessary
Position Expectations
As a core member of the MongoDB Professional Services team, you will
- Contribute to helping migrate customers from self-hosted MongoDB on-prem/cloud to Atlas
- Contribute to customer implementations at any or all phases of the application lifecycle: portfolio assessment, application planning, and design, deployment architectures, development and build, integration and release configuration, system testing, production operations, application optimization, and best practices adoption
- Work as part of a wider delivery team comprising fellow consulting engineers, project managers, and account teams
- Cultivate your individual MongoDB reputation as a trusted advisor to guide MongoDB and our customers into the future
- Partner with Product and Engineering teams to influence the direction of the MongoDB product roadmap
Success Measures
As a Consulting Engineer, you will be successful in this role when you can execute the following
- Become a field expert in “everything MongoDB”
- Communicate complex technical proposals simply and convincingly to a wide range of audiences
- Gain a reputation as a trusted advisor with your clients, large and small
- Ensure your client’s success with their MongoDB endeavors
- Maintain the required level of billable utilization
- Influence MongoDB product development by contributing experience from the field
- Successfully communicate the product roadmap to external clients
- Constantly work on improving yourself, our products and our team
Do you know, Why MongoDB is a fantastic place to work and build your career?
- Top NoSQL database in the world
- Largest Ecosystem and the fastest growing database in the world
- Close to 26,800 customers in more than 100 countries and over 175+ million downloads
- Sequoia Capital and a number of other Top VC firms have invested in MongoDB. Sequoia Capital calls us out as one of their flagship portfolios; Sequoia has also invested in Apple, Google, Youtube, and WhatsApp
- 9-figure revenue company, with very high double-digit growth rates
- Be a part of the company that’s reinventing the database, focused on innovation and speed
- Enjoy a fun, inspiring culture that is engineering focused
- Work with talented people around the globe
- Learn, contribute, and make an impact on the product and community
Life at MongoDB
Our India office culture
- 300+ people, with teams in Sales, Engineering, HR, Finance, IT & Marketing
- Regular group outings and opportunities to get to know your colleagues
- Employee affinity groups
Our Benefits
- Competitive salary and equity
- Comprehensive Health cover, dental cover, travel insurance & Life Insurance.
- Free lunch twice per week and a fully stocked kitchen with healthy and sweet treats in office.
- Macbooks are company standard
- 26 weeks Maternity & 20 Paternity leave to spend time with new arrivals
let’s check out the below link to know more about the role and Flex Consulting Team in India:
https://www.mongodb.com/blog/post/meet-our-growing-flex-consulting-team
To drive the personal growth and business impact of our employees, we’re committed to developing a supportive and enriching culture for everyone. From employee affinity groups to fertility assistance and a generous parental leave policy, we value our employees’ wellbeing and want to support them along every step of their professional and personal journeys.https://www.mongodb.com/blog/channel/culture"> Learn more about what it’s like to work at MongoDB, and help us make an impact on the world!
MongoDB is committed to providing any necessary accommodations for individuals with disabilities within our application and interview process. To request an accommodation due to a disability, please inform your recruiter.
MongoDB is an equal opportunities employer.
Bachelor's or Master's degree in Computer Science, Information Systems,
or equivalent.
EXPERIENCE – 2 to 5 years
CTC - UPTO 5.4L P.A.
JOB DESCRIPTION
We are looking for a backend developer who will be responsible for designing,
implementing, and supporting a distributed blockchain-based network. Your primary
responsibility will be analysing requirements, designing Blockchain technology around
a certain business model, and the building and launching of a blockchain network. You
will be asked to work on various blockchain technologies like Ethereum (Layer 1 & 2,
i.e Binance Smart Chain ).
● Analytical, results-driven Back-end Developer who will work with team members
to troubleshoot and improve current back-end applications and processes.
Focused on building a better, more efficient program and creating a better
end-user experience.
● Work closely with Frontend developers to integrate new web features into
our application
● Strong understanding of the web development cycle and programming
techniques and tools.
● Strong communication and presentation skills
● Ability to work in a fast-paced environment.
SKILLSET
● Experience with Smart contract development tools
● Strong background in Javascript, Python & Node JS, SQL
● Build new features and products using modern backend tools (Node.js, Mongo,
SQL, GraphQL)
● Hands-on technical exposure in implementing Blockchain technologies
(Ethereum and Hyperledger Familiarity with Hyperledger Fabric and Solidity )
Understanding of Distributed Ledger technology, Blockchain ecosystem and
structure.
● Experience working in an Agile and DevOps environment.
● Knowledge on Mining, Hashing, Elliptic Curve Cryptography(ECC) and P2P
networking Extensive experience with progression of major projects from the
planning stage through to implementation and completion Effective
communicator to all stakeholders and management during project consulting
and analysis. Strong Software development background.
● Experience on Smart contract and Solidity, development tools for Ethereum
(testrpc, geth, Web3, eth_lightwallet, etc.
● Experience in writing smart contracts.
● Good understanding of NFTs and tokens.
● Experience in wallet integration like MetaMask and Coinbase Wallet.
Experience working with decentralized application protocols like DeFi..
Working knowledge of at least one of the Blockchain frameworks such
as Hyperledger Fabric, R3 Corda, Ethereum (Solidity).
● Experience working with large code-bases.
● Proficiency in one or more of the following languages: C++, Go, Solidity,
Rust, Node.js, React.js.
● Strong knowledge of Algorithms and Data Structures.
● Familiarity with Cryptography.
● Familiarity with P2P networks
● Strong knowledge of bitcoin-like blockchains.
● Strong knowledge of concurrency and writing efficient and safe multithreaded
code
● Familiarity with code versioning tools such as Git
Rejolut is among the fastest-growing and award winning Tech companies working on leading technologies namely Blockchain, Machine Learning & Artificial Intelligence, Complex mobile & Web Apps, IoT, etc.Rejolut is a venture-backed company with clients in over several countries namely Malaysia Airlines,gba global,my-earth,biomes, Dlg-hub,etc.
We are looking for Tech geeks having hands-on experience and in love with building scalable, distributed and large web/mobile products and tech solutions. He/She must be an excellent problem solver with passion to self-learn and implement web technologies (frontend + backend). He/She would be responsible for the architecture design, code review, and technology build and deployment activities of the product.
Responsibilities:-
-Work with the team to develop world-class tools through practical development and collaboration with the open source Go community
-Interact with internal and external developers and communities
-Work with the toolchain team and other engineering teams as well as the community on senior-level feature contributions to Golang, related compiler bug fixes, efficiency improvements, and optimisations, and some light packaging work where needed
-Accept, analyze, and respond to bug reports against tools packages in your area of responsibility
-Plan and track development and periodically report progress to team management.
- Own the product development from scratch.
- Architect scalable, distributed and large-scale web and mobile solutions from scratch.
- Code for fresh development and to troubleshoot and resolve issues.
- Writing reusable, testable, and efficient code.
- Creating database schemas that represent and support business processes.
- Design and implementation of low-latency, high-availability, and performant applications.
- Able to learn & implement new technology/framework/library at God Speed.
- Customer-focused, react well to changes, work with teams and be able to multitask.
- Experience and knowledge of open-source tools and frameworks, broader cutting edge technologies around server side development.
Desired Candidate Profile:-
- 1+ years of experience in open source compiler or tools development
- 1+ years of experience with the Go language, runtime and tools
- Experience with or exposure to the Linux kernel is helpful
- Bachelor's degree or higher in computer science, computer engineering, or a technology-related discipline
The following requirements are a plus:
-Experience with C/C++ toolchains and debuggers
-Advanced knowledge of Go language, compiler, library, runtime, and debug internals
-Practical experience developing Go tools for enterprise use
-Direct experience with Go tools community participation
-Knowledge of and experience with system tools internals (e.g. compilers, debug formats)
-Proficiency in multiple programming languages, both dynamic(Javascript, Python, Ruby, etc.) and strongly typed object-oriented language.
-Implementing automated testing platforms and unit tests.
-Must be a proven performer and team player that enjoys challenging assignments in a high energy, fast growing and start-up workplace.
-Good communication and interpersonal skills
Rejolut - As a Career Differentiator
- We are a young and dynamic team who are obsessed with solving futuristic and evolutionary business problems at scale with the next generation technology like blockchain, crypto and machine learning. Focuses on empowering people across the globe to be technically efficient, making advancements in technology and providing new capabilities that were previously thought impossible.
- We provide exposure to higher learning opportunities so that you can work on complex and cutting edge technology like React, React Native, Flutter, NodeJS, Python, Go, Svelte, WebAssembly. Strong expertise in blockchain and crypto technology and working with the networks like Hedera Hashgraph, Tezos, BlockApps, Algorand, Cardano.
- We maintain high end transparency with clients and employees as Visibility unlocks Efficiency and trust unlocks Visibility.
- Company is backed by two technology Co-founders, well-versed with consumer applications and their work has been downloaded millions of times and have led teams in leadership positions in companies like Samsung, Purplle, Loylty Rewardz.
Benefits :
> Health Insurance
> Work from Home
> Fast growth and more visibility into the company
> Experience to work on the latest technology
> Competitive Learning Environment with supportive co-workers
> Employee friendly HR Policies
> Paid leaves up to certain limits
> Competitive salaries & Bonuses
> Liberal working atmosphere
> Get mentored by the best in the industry
Schedule:
Day Shift/Flexible working hours
Monday to Friday

About the Role
The Engineering team in Bangalore, India is building products for the Martial Arts
fans across the world. As part of the engineering team, you would be expected to have
deep technology expertise with a passion for building highly scalable products.
This is a unique opportunity where you can impact the lives of people across 150+
countries!
Responsibilities
Own architecture, design, development, and implementation of different
modules/features of the services
Design, develop, deploy and support web applications.
Discover opportunities for performance improvements
Recommend ways to improve reliability, efficiency and code quality
Focus on continuous delivery and reducing complexity
Carry out code reviews and manage pull requests
Build applications based on micro-services architecture.
Requirements
Overall 1~3 years of experience in Backend development.
B. E/B. Tech in CS or equivalent streams from institute of repute (IITs, NITs, BITs,
IIITs or equivalent)
Strong object oriented design skills & knowledge of design patterns
Experience designing & developing distributed systems involving multiple web
services, databases (both SQL and NoSQL), caches, queues, etc. taking into
consideration scalability, availability, fault tolerance, consistency, etc. of the
overall system
Well-aware of and enforces development best practices: Unit Tests, Code Reviews,
Integration Tests, CI/CD, Monitoring, Alerting, etc.
Must have:
- Knowledge on design, development and deployment of applications based on CMS and Dot Net technology framework
- Strong Analytical, Logical Reasoning and Problem-Solving skills
- Strong in SDLC concepts, RDBMS concepts and SQL/PL-SQL, Data Structures
- Ability to effectively work with a highly technical and virtually located team
Good to have:
- Considerable knowledge in the following: Drupal, .NET MVC, PHP, CSS, Angular, jQuery, Microsoft SQL Server, MySQL, DevOps, Agile software development
- Exposure to mobile application development using any one of the mobile development platforms (iOS, Android, Windows)
Soft skills:
- Ability to co-ordinate among various user groups and internally within the team. This is a critical skill
- Excellent communication skills, both written and oral
- Ability to multi-task and prioritize
- Deliver on commitments
- Self-Starter and willing to learn many new skills on the job
- Willing to work flexible hours as the job demands
- Excellent trouble shooting skills
- Ability to think through various business issues and come up with solid design solutions that will stand the test of time
- Good listening and influencing skills; a strong customer focus is a must









