
Principal Engineer (node.js)
at FinTech Product Development Firm
Your Responsibilities:
- Own the backend stack – Node.Js based, that powers our product
- Collaborate with Backend Developers (Python), Front-end developers, DevOps, and Data Scientists to design and implement new features
- Build and maintain several REST’ful Services/Endpoints which will be used both internally and externally in a Macroservices/Distributed services environment.
- Deploy and monitor the Services/Endpoints ensuring availability and scalability(ability to handle 100X traffic)
- Work on full project lifecycle starting from requirements gathering/understanding the problem to deploying and maintaining the project.
Skills that you bring Along:
- A minimum 8+ years of extensive work experience with Node.Js and related frameworks – particularly Express.Js.
- Extensive experience in designing and maintaining REST’ful API endpoints
- Extensive experience with databases such as Postgres and Mongo.
- Extensive experience in Cloud Infrastructure (AWS based) – e.g. AWS API Gateway, Lambda Functions etc.
- Experience with cache like Redis and/or Memory cache
- Good experience in Microservices/Macroservices or Event driven Architectures
- Good experience with design patterns
- Experience in writing advanced SQL-queries, good knowledge of PL/SQL
- Good understanding of Software Design Principles and domain-driven design
- Good experience with Continuous Delivery and Containerization(Docker)
- Ideally maintaining infrastructure-as-code using Terraform
- Excellent communication skills and the ability to explain complex topics in a simple manner

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Responsibilities:
● Design and build scalable APIs and microservices in Node.js (or equivalent backend frameworks).
● Develop and optimize high-performance systems handling large-scale data and concurrent users.
● Ensure system security, reliability, and fault tolerance.
● Collaborate closely with product managers, designers, and frontend engineers for seamless delivery.
● Write clean, maintainable, and well-documented code with a focus on best practices.
● Contribute to architectural decisions, technology choices, and overall system design.
● Monitor, debug, and continuously improve backend performance.
● Stay updated with modern backend technologies and bring innovation into the product.
Desired Qualifications & Skillset:
● 2+ years of professional backend development experience.
● Proficiency with Node.js, Express.js, or similar frameworks.
● Strong knowledge of web application architecture, databases (SQL/NoSQL), and caching strategies.
● Experience with cloud platforms (AWS/GCP/Azure), CI/CD pipelines, and containerization (Docker/Kubernetes) is a plus.
● Ability to break down complex problems into scalable solutions.
● Strong logical aptitude, quick learning ability, and a proactive mindset
Responsibilities:
- Collaborate with cross-functional teams including front-end developers, designers, and system administrators to develop robust and scalable server-side applications.
- Design and implement RESTful APIs and services using Node.js, ensuring efficient data handling and integration.
- Develop database schemas and models for MongoDB, optimizing queries and ensuring data integrity.
- Implement data migration and transformation tasks between different data sources.
- Write efficient and reusable code, following best practices and coding standards.
- Conduct thorough testing and debugging of applications to identify and fix issues promptly.
- Collaborate with DevOps team to deploy applications on servers or cloud platforms.
- Continuously monitor application performance and optimize it for scalability and reliability.
- Stay updated on emerging technologies and trends, actively suggesting improvements and innovative solutions.
Requirements:
- Strong proficiency in Node.js and JavaScript.
- Solid understanding of server-side development and asynchronous programming concepts.
- Experience working with NoSQL databases (e.g., MongoDB).
- Knowledge of database design and query optimization techniques.
- Familiarity with web application security principles and best practices.
- Proficiency in using version control systems (e.g., Git).
- Good understanding of agile development methodologies.
- Excellent problem-solving and analytical skills.
- Effective communication and collaboration abilities.
Backend - Principal IC/Lead SDE
Minimum Requirements
- 8+ years development experience
- Solid Experience and knowledge of
- Coding and debugging using Object Oriented languages like Java, C++, Go or similar languages.
- Database design, Query optimizations, pitfalls (both SQL, NoSQL)
- Developing Scalable, distributed systems and patterns
- Developing REST and/or GraphQL based APIs
- Writing and driving Clean code in a team (via SOLID principles).
- Knowledge of writing unit tests
- NodeJS
Good to have
- Experience with GoLang/Python
- Experience with Microservices, designs and patterns
- Experience with Dockers/Kubernetes and orchestration
- Familiarity with Reactive programming and patterns like RxJs/RxJava, CQRS, Eventing systems
- Experience with automating DevOps lifecycle
- Proficiency with
Responsibilities
- Work with Product team and Drive design, development and deployment of the overall architecture and individual modules to support our Apps , website and internal tools
- Ensure the entire stack is designed and built for availability, speed, scalability, testability, debugging
- Design and development of our REST and GraphQL API
- implement and improve continuous integration and deployment
- Serve as a technical lead for the team
- Mentor team members
Overall 2+ years of experience in IT industry
Mid level experience in NodeJS and ExpressJS
Design and Develop JavaScript application
Mid level experience in JavaScript frontend usage
Experience in HTML and CSS
Experience in GIT, JIRA is necessary
Experience in usage of postman
Good communication skills are necessary as we interact with client daily
Experience in Unit testing for NodeJS using Jest Framework will be useful
Experience with SQL & NO SQL
In-depth knowledge and experience in developing web applications with service-oriented frameworks.
LearnApp's engineers are a small group of people who directly impact the daily lives of thousands of learners across the globe.
As a software engineer, you are the architect, designer and coder and maintainer of your project.
In addition, you work closely with the product team to make vision become reality.
You are dynamic and able to work well both independently and as part of a team. At LearnApp, we leave all egos at the door and concentrate on the job at hand.
We value passionate, down to earth, “can do” people who enjoy fine-tuning small details, without losing sight of the big picture.
We are looking for the type of person who feels uncomfortable when a day goes by without achieving something impactful.
Someone who is driven to get things done and views obstacles as an exciting challenge that demands a creative solution.
Above all else, this role requires someone who takes great pride in their work and is inspired and motivated by their role in improving the way thousands of learners receive financial literacy. As a Backend Software Engineer, you’ll work closely with our engineers to ensure system consistency and improve user experience. Responsibilities - Analyze functional requirements and creation of software design - Design and implement scalable and robust applications - Design, develop, test, deploy, maintain, and improve software - Design, shape and implement authentication, authorization, auditing, reporting, and API infrastructure solutions Qualifications - Bachelor's degree in Computer Science, a related technical field of study, or equivalent practical experience - Experience in Object-Oriented Design and programming concepts - A minimum of 3 years of working experience in a product oriented company - Programming experience in NodeJS and Typescript or Javascript Preferred Qualifications - Experience in building cloud (SaaS) applications, particularly using AWS technologies - Experience in building serverless applications - Knowledge of Agile software development methodologies - Ability to learn other coding languages as needed - Object-oriented, database design, and SQL skills Perks
- Capability of working remotely from any location
- Deep knowledge in scaling of startups and influence the development of the company
- Transparency with flat hierarchies where every person is highly valued
- Company parties, team lunches, and a lot more events










