Backend Developer

Job Title : Senior Node.js Developer

Experience : 5 to 10 Years

Location : Gurugram (5 days WFO) | Initial 15 days in Udaipur (expenses covered)

Notice Period : 1 Month or less

Role Overview :

We are hiring a Senior Node.js Developer to lead and deliver scalable solutions, drive best practices, and mentor engineers. Strong Node.js expertise is mandatory (MERN experience welcome with Node.js depth).

Mandatory Skills :

Node.js, Express.js, Data Structures & Algorithms, System Design (HLD/LLD), CI/CD, Git, Agile, Async programming, Debugging & Performance Optimization.

Key Responsibilities :

• Lead development and ensure high‑quality delivery.
• Gather requirements, design (HLD/LLD), and implement solutions.
• Optimize performance, scalability, and integrations.
• Mentor team members and support hiring.
• Collaborate in Agile teams and enforce coding best practices.

Required Skills :

• 5 to 10 Years in backend with Node.js/Express.js.
• Strong in DSA, problem‑solving, and system design.
• Experience with CI/CD, Git, and Agile methodologies.
• Expertise in async programming, debugging, and performance tuning.
• Excellent communication and collaboration skills.

Nice to Have : MERN stack exposure, cloud (AWS/Azure/GCP), Docker, caching/queues.

Interview Process :

1. AI Technical Interview
2. System Design Round (HLD & LLD)
3. Data Structures & Algorithms
4. HR Interview

Location :

• Primary : Gurugram (Digital Greens, Sector 61)
• Initial 15 days : Udaipur (A‑square, Shobhagpura)

Note : Preference for Gurugram/NCR candidates. Stable profiles only.

Job Title : Backend Engineer (AI-First | FinTech/Crypto)

Experience : 3 to 6 Years

Location : Gurugram (Sector 49)

Working Hours : 10:00 AM – 6:00 PM

Work Mode : On-site | 6 Days Working

Employment Type : Full-time

Role Overview :

This is not a typical ticket-based engineering role. You will take end-to-end ownership of systems—designing architecture, building scalable solutions, and solving real-world performance challenges.

We operate in an AI-first engineering environment, leveraging advanced tools and automation workflows to build high-performance distributed systems.

Mandatory Skills :

Java/Spring Boot or Node.js, System Design (HLD/LLD), Distributed Systems, Event-Driven Architecture (Kafka/RabbitMQ), Low-Latency APIs, PostgreSQL/MongoDB, CI/CD, Docker/Kubernetes, AI-assisted development (Copilot/Cursor/Claude)

Key Responsibilities :

• Design and build scalable backend systems (Java/Spring Boot, Node.js, or similar).
• Architect and implement event-driven systems (Kafka, RabbitMQ, pub/sub).
• Develop secure and reliable financial systems with strong data integrity.
• Solve scalability and performance challenges in fintech/crypto environments.
• Own features end-to-end: design → development → deployment → monitoring.
• Work with real-time data pipelines (WebSockets, streaming, event sourcing).
• Define service contracts and optimize system architecture.

AI-First Engineering (Must-Have Mindset) :

You will :

• Use tools like GitHub Copilot, Cursor, and Claude in daily development
• Follow spec-driven development using structured instructions
• Review, validate, and ship AI-generated code with strong engineering judgment

Core Requirements :

• 3+ years of backend development experience.
• Strong expertise in Java (Spring Boot) or Node.js.
• Solid understanding of System Design (HLD/LLD, Distributed Systems).
• Experience with event-driven architectures (Kafka, RabbitMQ, async pipelines).
• Hands-on experience building low-latency, high-throughput systems.
• Strong database knowledge (PostgreSQL, MongoDB, etc.).
• Understanding of security, performance optimization, and reliability.
• Experience with CI/CD, Git, Docker, Kubernetes.
• Exposure to React / React Native is a plus.

Good to Have (Differentiators) :

• Experience in FinTech / Crypto / Web3 / Blockchain.
• Built systems for trading, payments, or real-time financial data.
• Experience with AI agents, automation pipelines, or agent-based systems.
• Exposure to parallel AI workflows (coding / testing / refactoring).
• Contributions to open source or technical blogs.
• Experience handling production-scale systems.

WHAT YOU’LL DO:

• Lead in the design and development of robust, scalable, and efficient software solutions, ensuring the highest standards in all aspects of software development.
• Design and implement high-quality, test-driven, scalable backend code for various client projects using TypeScript and Nest.js Develop and maintain APIs to support consuming teams.
• Work closely with frontend teams to optimize REST API integrations, ensuring efficient data fetching and caching strategies.
• Create and maintain documentation, implement and follow best practices for development workflow.
• Partner closely with Project Managers and other teams to ensure the successful delivery of significant software projects, coordinating resources and managing timelines for smooth project execution.
• Efficiently prioritizes and plans complex tasks, and influences a respectful, inclusive work environment, fostering continuous learning and growthContribute innovative ideas to ensure we deliver the best solutions for our clients.
• Act as a technical mentor to more junior engineers, fostering a culture of continuous learning and improvement.

WHAT WE’RE LOOKING FOR:

• Strong proficiency in English (written and verbal communication) is required.
• Experience working with remote teams in North America and Latin America, ensuring smooth collaboration across time zones.
• Deep expertise with Typescript and NestJs framework.
• Experience with authentication workflows and authorization mechanisms (OAuth, JWT)Experience with testing frameworks and best practices, including unit testing, integration testing, and e2e testing.
• Solid understanding of web technologies in general.
• Solid understanding of backend design patterns.
• Experience with designing applications that use and consume databases (SQL, ORM, etc).
• Extensive experience with building and maintaining versioned APIs Strong knowledge of GCP or other equivalent cloud platforms.
• Understanding of containerization technologies for development environments.
• Experience with messaging systems and patterns, ideally with tools like Google Pub/Sub or equivalentExperience with CI/CD pipelines for deployments (GitHub Actions preferred).
• Knowledge of security best practices, including CSP and OWASP Top 10, Ability to communicate effectively with technical and non-technical stakeholders.
• You should feel comfortable explaining technical concepts in simple terms.
• Experience working in fast-paced, Agile environments, balancing priorities across multiple projects.
• Experience mentoring junior engineers and leading development teams.

Nice to Haves:

• Experience with Algolia, Ninetailed, and Salsify
• Experience with front-end technologies like React and frameworks like NextJs
• Experience with Terraform and DevOps principles
• Certification in Cloud Development on any modern platform

Role: Technical Co-Founder

Experience: 3+ years (Mandatory)

Compensation: Equity Only (No Salary)

Requirements:

Strong full-stack development skills

Experience building web applications from scratch

Able to manage complete tech independently

Startup mindset & owne

rship attitude

• Candidate should have strong work experience in JavaScript(ES6+)
• Hands on application development using Node JS, Express JS, MongoDB and Mongoose
• Good understanding of Web Technology, RESTful APIs, JSON structures
• Proficient understanding of code versioning tools, such as Git
• Exposure in AWS Services will be an added advantage

Responsibilities and Duties

• Design, code, test and document software according to the functional requirements.
• Analyze, diagnose and resolve errors related to applications.
• Provide application and user support.

• Experience in Node.js Frameworks
• Hands-on experience with MongoDB
• Strong proficiency with JavaScript, Socket IO, ExpressJS & SailsJS
• Experience working with third-party developer tools, including documentation, APIs, and SDKs
• Good Grasp of Asynchronous Programming and Its Workarounds
• Database Schema design for Business Processes
• Working Knowledge of JWT-based passport Authentication
• Can Write and Refactor Efficient Codes
• Experience in Implementing Data Protection
• Must have demonstrated the ability to deliver high-quality products on time
• Knowledge of GIT, SVN technology

• Strong knowledge of JavaScript.
• Knowledge of and its frameworks.
• Knowledge of NodeJS deployment over servers like AWS, the digital ocean.
• Good understanding of relational databases. Having experience with MongoDB will be an advantage.
• Proficiency in handling server-side development, deployment, and debugging.
• Having worked in socket programming is an added advantage.
• Good understanding of code versioning tools, such as Git.

What do Microsoft, The Gap, Royal Bank of Scotland, Lockheed Martin, and top Open Source projects like JQuery have in common? They all use BrowserStack, as do over 25,000 other customers!

BrowserStack is the industry-leading, cloud web and mobile testing platform that enables developers to test their websites and apps on different operating systems and mobile devices. Since launching in 2011, our mission has been bold yet simple: To be the testing infrastructure for the internet. 6 years and billions of tests later, we are ready for our next phase of hyper growth. Bootstrapped for the first 6 years, we continue to be profitable since inception with a near exponential https://workable.com/nr?l=https%3A%2F%2Fwww.browserstack.com%2Fgrowth">growth in customers around the globe. Recently, we closed $50M in Series A funding from Accel

Are you are the one who wants to work on a tech-heavy product, and the challenging technical problems that it entails? Problems vary, and can be as diverse as scaling the product smoothly as the company grows, to setting up a device farm, or solving streaming issues through a browser, without the use of plugins. Will you be excited for the challenge to transform and think critically on many computer science disciplines including product design, usability, building APIs and user-centric online applications, business logic, scaling performance, and 24x7 reliability?

JOB RESPONSIBILITIES

• Writing high quality code, participating in code reviews, designing/architecting systems of varying complexity and scope, and creating high quality documentation supporting the design/coding tasks
• Lead out team meetings, stand-ups, and architecture/design discussions
• Identify areas of improvement in our frameworks, tools, processes and strive to make them better. Evaluate our success metrics and evolve our reporting systems
• Works on the web application layer, backend, systems, streaming and other associated technology to build our product and components
• Find solutions and solve issues around a variety of operating systems or programming languages
• Researching new technologies and adapt them to BrowserStack requirements
• Own and commit to all your work, and be accountable for your results
• Using and understanding code from Open Source
• Teaching others how to use new software
• Willing to learn new programming languages and databases
• Able to write efficient SQL queries and design schemas for relational databases
• Participate in a culture of code reviews, writing tech specs, and collaborating closely with other people (no lone wolves)
• Produce high quality software that is unit tested, code reviewed, and checked in regularly for continuous integration
• Develop multi-tier scalable, high-volume performing, and reliable user-centric applications that operate 24x7
• Scale distributed applications, make architectural trade-offs applying synchronous and asynchronous design patterns, write code, and deliver with speediness and quality

• Good experience in at least one scripting language: Ruby, Nodejs, Python, AppleScript, Unix shell or similar
• Familiarity with one compiled language: C, Java, Go or similar
• Good knowledge of operating systems and networking concepts
• Reasonable knowledge of Windows and/or Linux operating systems
• Ability to work on Windows and Linux platform below the application layer, including file systems, kernels, custom installations, shell scripting, internal APIs, etc
• Aggressive problem diagnosis and creative problem solving skills
• Startup mentality, high willingness to learn, and hardworking
• Experience of 3-6 years

Requirements:

• Passion for building and delivering great software with a strong sense of ownership.
• Good understanding into .Net Core and PS
• Minimum of two years of experience in building web applications using ASP.NET MVC and .NET platform in general.
• Should have strong UI development skills using HTML, CSS/JavaScript frameworks.-

     Good understanding of IIS configuration

• Strong experience with Build and Release, Agile processes and Estimation/Planning-
  
  Exposure to New Relic or similar tools to optimize web application performance
  Strong expertise in SQL programming, with experience of writing & optimizing queries that access/process millions of records-
  Experience of architecting and designing web applications and servicesTeam TA,LeadSquared (ref:hirist.com)

PLEASE ONLY APPLY FOR THIS JOB IF YOU ARE AN EXPERT IN NODE.JS

Addenda is a Dubai based Insurtech startup that utilises the blockchain to share life/medical/motor insurance information among a consortium of insurers. Our Products helps insurers avoids anti selection, non-disclosure, overexposure, and ensures transparency between the policy applicant and the insurance company.

We are looking for a NodeJS Backend Developer who is energetic, self-directed and self-motivated. You should possess a strong desire to learn and contribute solutions and ideas to a dynamic team.

Responsibilities 

- Development of all server-side logic and ensuring high performance and responsiveness to requests from the front-end. 

- Develop stable and secure RESTful APIs, Microservices, automated tests 

- Build reusable code and libraries for future use 

- Optimise backend for maximum speed and scalability 

- Collaborate with other team members and stakeholders for front-end or otherwise

Skills 

- Proficient understanding of Express.JS, Node.JS, MongoDB 

- In Depth Knowledge of creating Secure RESTful APIs, Web Services or micro services along with caching, content management capabilities 

- Knowledge of API Design and Development and Security Patterns on API’s using various Authentication mechanisms 

- Experience in Cloud Technology for Deployment of Services is a plus 

- Proficient understanding of code versioning tools, such as Git