Senior NodeJs Developer

Job Title : Backend / API Developer - Python (FastAPI) / Node.js (Express)

Location : Remote

Experience : 4+ Years

Job Description :

We are looking for a skilled Backend / API Developer - Python (FastAPI) / Node.js (Express) with strong expertise in building secure, scalable, and reliable backend systems. The ideal candidate should be proficient in Python (FastAPI preferred) or Node.js (Express) and have hands-on experience deploying applications to serverless environments.

Key Responsibilities :

• Design, develop, and maintain RESTful APIs and backend services.
• Deploy and manage serverless applications on Cloudflare Workers, Firebase Functions, and Google Cloud Functions.
• Work with Google Cloud services including Cloud Run, Cloud Functions, Secret Manager, and IAM roles.
• Implement secure API development practices (HTTPS, input validation, and secrets management).
• Ensure performance optimization, scalability, and reliability of backend systems.
• Collaborate with front-end developers, DevOps, and product teams to deliver high-quality solutions.

Mandatory Skills :

Python (FastAPI) / Node.js (Express), Serverless Deployment (Cloudflare Workers, Firebase, GCP Functions), Google Cloud Services (Cloud Run, IAM, Secret Manager), API Security (HTTPS, Input Validation, Secrets Management).

Required Skills :

• Proficiency in Python (FastAPI preferred) or Node.js (Express).
• Hands-on experience with serverless platforms (Cloudflare Workers, Firebase Functions, GCP Functions).
• Familiarity with Google Cloud services (Cloud Run, IAM, Secret Manager, Cloud Functions).
• Strong understanding of secure API development (HTTPS, input validation, API keys & secret management).
• Knowledge of API design principles and best practices.
• Ability to work with CI/CD pipelines and modern development workflows.

Preferred Qualifications :

• Strong knowledge of microservices architecture.
• Experience with CI/CD pipelines.
• Knowledge of containerization (Docker, Kubernetes).
• Familiarity with monitoring and logging tools.

If you're an experienced back-end developer with experience using serverless architecture (AWS Lambda, DynamoDB) and microservices, this could be the ideal job for you!

You'll be at a senior position, developing & maintaining microservices, business logic, and optimization/maintenance of the global database(s) to ensure a high performance & responsiveness to requests from the front-end.

Language:

Node.js/Tyepscript

Resposibilities:

Building stable, testable, and reusable code libraries for future use.

Write & maintain REST APIs for front-end consumption.

Managing deployments, code pushes (CI/CD pipelines).

Ongoing optimization of backend applications for maximum speed and scalability.

Implementation of security and data protection.

Design and implementation of data storage solutions.

Ideal Candidate:

At least 3-4+ years of server-side programming experience.

Solid experience working with NoSQL databases & microservices architecture.

Solid experience with version control (we use Github).

Decent experience with serverless architecture, code deployment and cloud platforms like AWS.

GOOD TO HAVE: Any experience working with fintech projects.

At LambdaTest, We help developers and testers fix their applications across a combination of 2000+ browsers and Operating Systems by providing a complete cross-browser ecosystem on the cloud. As Backend Developer You will work with other Developers throughout the Software Development Life Cycle.

You will join a dynamic and fast-paced environment and work with cross-functional teams to design, build and roll out product that deliver the company’s vision and strategy.

What’s the Opportunity?

• As a hands-on engineering professional, you'll stay on top of the details and will be more focused on building a better, more efficient program and creating the best user experience and 
• Support and collaborate with our service engineers in getting to the bottom of issues and come up with robust solutions.
• Produce high quality software that is unit tested, code reviewed, and checked in regularly for continuous integration.
• Participate in a culture of code reviews, writing tech specs, and collaborating closely with other people.
• Design distributed systems using micro services architecture would be plus.
• Implementing high performance and non-blocking systems to serve traffic heavy SaaS based product.

Requirements and qualifications-

• Bachelor's degree in Computer Science or equivalent combination of technical education with 2-4 Years of work experience.
• Experience with one or more general purpose programming languages, including but not limited to:Python, Golang, NodeJs 
• A solid understanding of software construction
• The ability to naturally follow good development practices like test automation, CI/CD, source version control, etc.

Desired Experience

3+ years

Job Description

What You’ll Do

• Design financial systems for scale. Measure, plan, iterate.
• Writing reusable, testable, and efficient code
• Design and implementation of low-latency, high-availability, and performant applications
• Setup and own the engineering architectures built around event sourcing, application sharding, database sharding, service communication mesh, etc.
• The tech: Go, Google Cloud Spanner, Kafka, Redis

What you bring to the table

• 3+ years of experience. Relevant experience is preferred.
• Knowledge of 2 common programming languages - Java & Node / Rust /Python & Go
• Comfortable in linux command line, AWS or GCP
• Strong unit test and debugging skills
• Great communication skills

Bonus if you have…

• Love building great products and engineering systems from scratch
• Are a Self-starter, Hustler and Curious to Learn
• Have an understanding of fundamental design principles behind a scalable application
• Thrive in an early-stage startup environment with less stability and more ambiguity
• Have an interest in financial products and/or cryptocurrency

JD for NodeJS

Mandatory Skills - Nodejs, Javascript, Express.js, MongoDB, Data Structures, Algorithms. 

Please find the JD below:-

• Expertise in Node.js Web frameworks like Meteor, Express, and Kraken.JS
• Expertise in building highly scalable web services using Node.js, Create REST API with the help of Node middleware
• Deep understanding of REST and API design
• Experience designing APIs for consistency, simplicity, and extensibility.
• Expertise with JavaScript testing frameworks like Jasmine, Quit, Mocha, Sinnon and Chai. 
• Expertise with build tools like Web pack, gulp, and grunt.
• Integration of various application components
• Experience in various phases of Software Development Life Cycle (SDLC) such as requirements analysis, design, and implementation in an agile environment, etc.

About Us :-

Mobile programming LLC is a US based digital transformation company. We help enterprises transform ideas into innovative and intelligent solutions, governing the Internet of Things, Digital Commerce, Business Intelligence Analytics and Cloud Programming. Bring your challenges to us, we will give you the smartest solutions. From conceptualizing and engineering to advanced manufacturing, we help customers build and scale products fit for the global marketplace.

Mobile programming LLC has offices located in Los Angeles, San Jose, Glendale, San Diego, Phoenix, Plano, New York, Fort Lauderdale and Boston. Mobile programming is SAP Preferred Vendor, Apple Adjunct Partner, Google Empaneled Mobile Vendor and Microsoft Gold Certified Partner. 

Moreover We have our presence in India with 7 locations i.e Gurgaon, Mohali, Panchkula, Pune, Bangalore, Dehradun & Chennai.

For more information please visit to our website link below:-

https://www.mobileprogramming.com/">https://www.mobileprogramming.com

Roles and Responsibilities:

6+ Experience in  Node.js, React Js

excellent written and verbal communication skill

• Healthy team and relationship building skills
• Hands-on experience delivering web applications in the cloud to on-demand production clients
• Experience in JavaScript, OOP Patterns, ES6, HTML, CSS, LESS
• Experience with  MS Sql Server, Mongo DB
• Experience with SSO, SAML, OAuth, JWT for API and Web Session Authentication and Authorization
• Experience with Azure Devops platform will be an added advantage
• Experience with test and/or process automation, source control
• Possess solid debugging process and exhibit technical intuition