Senior Backend (Node js)/ Full Stack developer

Review Criteria

• Strong Senior Backend Engineer profiles
• Must have 5+ years of hands-on Backend Engineering experience building scalable, production-grade systems
• Must have strong backend development experience using one or more frameworks (FastAPI / Django (Python), Spring (Java), Express (Node.js).
• Must have deep understanding of relevant libraries, tools, and best practices within the chosen backend framework
• Must have strong experience with databases, including SQL and NoSQL, along with efficient data modeling and performance optimization
• Must have experience designing, building, and maintaining APIs, services, and backend systems, including system design and clean code practices
• Experience with financial systems, billing platforms, or fintech applications is highly preferred (fintech background is a strong plus)
• (Company) – Must have worked in product companies / startups, preferably Series A to Series D
• (Education) – Candidates from top engineering institutes (IITs, BITS, or equivalent Tier-1 colleges) are preferred

Role & Responsibilities

As a Founding Engineer at company, you'll join our engineering team during an exciting growth phase, contributing to a platform that handles complex financial operations for B2B companies. You'll work on building scalable systems that automate billing, usage metering, revenue recognition, and financial reporting—directly impacting how businesses manage their revenue operations.

This role is perfect for someone who thrives in a dynamic startup environment where requirements evolve quickly and problems need creative solutions. You'll work on diverse technical challenges, from API development to external integrations, while collaborating with senior engineers, product managers, and customer success teams.

Key Responsibilities-

• Build core platform features: Develop robust APIs, services, and integrations that power company’s billing automation and revenue recognition capabilities
• Work across the full stack: Contribute to both backend services and frontend interfaces, ensuring seamless user experiences
• Implement critical integrations: Connect company with external systems including CRMs, data warehouses, ERPs, and payment processors
• Optimize for scale: Build systems that handle complex pricing models, high-volume usage data, and real-time financial calculations
• Drive quality and best practices: Write clean, maintainable code while participating in code reviews and architectural discussions
• Solve complex problems: Debug issues across the stack and work closely with teams to address evolving client needs

The Impact You'll Make-

• Power business growth: Your code will directly enable billing and revenue operations for fast-growing B2B companies, helping them scale without operational bottlenecks
• Build critical financial infrastructure: Contribute to systems handling millions in transactions while ensuring accurate, compliant revenue recognition
• Shape product direction: Join during our scaling phase where your contributions immediately impact product evolution and customer success
• Accelerate your expertise: Gain deep knowledge in financial systems, B2B SaaS operations, and enterprise software while working with industry veterans
• Drive the future of B2B commerce: Help create infrastructure powering next-generation pricing models from usage-based to value-based billing.

Your Impact 

We’re looking for passionate and self-driven folks who can combine technical depth with strategic product thinking. This role is ideal for someone who enjoys working with modern backend stacks, brings strong critical thinking to the table, and can balance short-term delivery with long-term technical vision. 

• Build scalable and reliable backend services and APIs that power the product.
• Design, implement, and maintain databases, ensuring data integrity, security, and efficient retrieval. 
• Implement the core logic that makes applications work, handling data processing, user requests, and system operations. 
• Contribute actively to system architecture, proposing enhancements and leading design discussions for new features and services.
• Working closely with product managers and designers to turn ideas into reality and shape the product roadmap. 
• Optimize systems for performance, scalability, and security 
• Stay up-to-date with new technologies and frameworks, contributing to the advancement of software development practices 
• Drive code quality through writing unit tests, code reviews, and documentation.
• Take ownership of end-to-end feature development — from design to deployment and monitoring.
• Mentor junior developers, setting high standards for engineering excellence within the team.

What skills do you need? 

• Extensive (Must have) hands-on experience in JavaScript / TypeScript, backend development using Node.js and Express.js, and database management with MySQL.
• Strong command of JavaScript and understanding of its quirks and best practices
• Exposure to system design and interest in building scalable, high-availability systems.
• Experience from a high-growth product-based startup is a must-have.
• Ability to think strategically when designing systems—not just how to build, but why
• Prior work on B2C applications with a focus on performance and user experience
• Ensure that applications can handle increasing loads and maintain performance, even under heavy traffic 
• Work with complex queries for performing sophisticated data manipulation, analysis, and reporting. 
• Knowledge of Sequelize, MongoDB, and AWS would be an advantage. 
• Experience in optimizing backend systems for speed and scalability. 
• Experience building teams and operating in high-paced environments

Why choose a career at RockED? 

• Build from Day One: Work in small, fast-moving teams solving real problems and building products from the ground up.
• Learn from Industry Leaders: Collaborate directly with leaders who’ve held senior roles at global companies like Adobe, Microsoft, Walmart, and more.
• Global Exposure: Be part of a diverse, high-calibre team working closely across the US and India.
• People-First Benefits: ₹10 lakh health insurance coverage for you and your family—fully sponsored by RockED.
• Freedom with Responsibility: Unlimited leave policy built on trust and ownership, used responsibly by our team so far.

The requirements are as follows:

1) Familiar with the the Django REST API Framework.

2) Experience with the FAST API framework will be a plus

3) Strong grasp of basic python programming concepts ( We do ask a lot of questions on this on our interviews :) )

4) Experience with databases like MongoDB , Postgres , Elasticsearch , REDIS will be a plus

5) Experience with any ML library will be a plus.

6) Familiarity with using git , writing unit test cases for all code written and CI/CD concepts will be a plus as well.

7) Familiar with basic code patterns like MVC.

8) Grasp on basic data structures.

You can contact me on nine three one six one two zero one three two

Job Title : Python Backend Lead / Senior Python Developer

Experience : 6 to 10 Years

Location : Bangalore (CV Raman Nagar)

Openings : 8

Interview Rounds : 1 Virtual + 1 In-Person (Face-to-Face with Client)

Note : Only local Bangalore candidates will be considered

About the Role :

We are seeking an experienced Python Backend Lead / Senior Python Developer to design, develop, and optimize scalable backend solutions.

The role involves working with large-scale data, building efficient APIs, integrating middleware solutions, and ensuring high performance and reliability.

You will lead a team of developers while also contributing hands-on to coding, design, and architecture.

Mandatory Skills : Python (Pandas, NumPy, Matplotlib, Plotly), FastAPI/FlaskAPI, SQL & NoSQL (MongoDB, CRDB, Postgres), Middleware tools (Mulesoft/BizTalk), CI/CD, RESTful APIs, OOP, OOD, DS & Algo, Design Patterns.

Key Responsibilities :

• Lead backend development projects using Python (FastAPI/FlaskAPI).
• Design, build, and maintain scalable APIs and microservices.
• Work with SQL and NoSQL databases (MongoDB, CRDB, Postgres).
• Implement and optimize middleware integrations (Mulesoft, BizTalk).
• Ensure smooth deployment using CI/CD pipelines.
• Apply Object-Oriented Programming (OOP), Design Patterns, and Data Structures & Algorithms to deliver high-quality solutions.
• Collaborate with cross-functional teams (frontend, DevOps, product) to deliver business objectives.
• Mentor and guide junior developers, ensuring adherence to best practices and coding standards.

Required Skills :

• Strong proficiency in Python with hands-on experience in Pandas, NumPy, Matplotlib, Plotly.
• Expertise in FastAPI / FlaskAPI frameworks.
• Solid knowledge of SQL & NoSQL databases (MongoDB, CRDB, Postgres).
• Experience with middleware tools such as Mulesoft or BizTalk.
• Proficiency in RESTful APIs, Web Services, and CI/CD pipelines.
• Strong understanding of OOP, OOD, Design Patterns, and DS & Algo.
• Excellent problem-solving, debugging, and optimization skills.
• Prior experience in leading teams is highly desirable.

What you will be doing

● Building and maintaining micro services.

● Develop new features and improve existing features of the application.

● Coding, Implementing, Unit Testing and Documenting Typescript and Javascript based services.

● Design, build, and maintain efficient, reusable, and reliable code.

● Code reviews and ensuring adherence to software development standards.

● Contribute to team and organizational improvements in process and infrastructure.

● Participating in requirements gathering and functional specification activities.

● Resolving and helping to mitigate production issues.

We are looking for a Senior Node.js Developer responsible for managing the interchange of data between the server and the users. Your primary focus will be the development of all server-side logic, definition and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end. You will also be responsible for integrating the front-end elements built by your co-workers into the application. Therefore, a basic understanding of front-end technologies is necessary as well. Collaborate with front-end and back-end developers and designers to build website following client requirements.

Responsibilities

• Create clear, simple, and reusable code
• Develop all server-side logic, including data storage to optimize website performance
• Identify programming bottlenecks and bugs and find fixes
• Test, update and validate web applications to be used on different web browsers
• Execute automated testing platforms and system tests
• Familiarity with front-end technologies
• Attention to detail, especially in identifying and fixing errors.

Required Skills

• 3+ Years of experience in back-end development
• Knowledge and experience in Node js and Mongo DB
• Experience in Microservices Architecture