SDE 1/2/3 - Backend (NodeJS/Scala)

At BigThinkCode, our technology solves complex problems. We are looking for talented back-end (node.JS) engineer to join our at Chennai.

Please find below our job description, if interested apply / reply sharing your profile to connect and discuss.

Company: BigThinkCode Technologies

URL: https://www.bigthinkcode.com/

Experience required: 3-4 years

Work location: Chennai

Joining time: Immediate – 4 weeks

Work Mode: Work from office / Hybrid

A skilled Node.js Developer with experience in building scalable applications using event-driven architecture within distributed systems. The ideal candidate should be comfortable in high-performance backend services and have a strong understanding of asynchronous programming patterns.

Experience or exposure to knowledge embedding and vectorization techniques is a strong plus, especially in the context of modern data-driven or AI-powered systems.

Must have skills:

• Hands on expertise in OOJS, node.js, distributed systems.
• Event drive architecture (EDA) microservices project experience MUST.
• Any programming: Typescript or nodeJS or Golang
• Hands on experience using docket containers and Kubernetes.
• Aware about Asynchronous and Loose Coupling.
• Familiar with API’s gateway and microservice design patterns.

Required Skills

• 3+ years of hands-on experience with Node.js
• Strong understanding of event-driven architecture and non-blocking I/O
• Experience working with distributed systems and microservices architecture
• Proficiency in RESTful API design and implementation
• Experience with databases such as MongoDB, PostgreSQL, or MySQL
• Experience with containerization tools like Docker and orchestration tools like Kubernetes

Key Responsibilities

• Design, develop, and maintain server-side applications using Node.js
• Build and optimize scalable, event-driven systems in distributed environments
• Implement asynchronous workflows, message queues, and pub/sub architectures
• Collaborate with cross-functional teams to define and deliver backend solutions

Good to Have 

• Experience with knowledge embedding and vectorization techniques
• Familiarity with vector databases (e.g., Pinecone, Weaviate, FAISS)
• Understanding of cloud platforms (AWS, Azure, or GCP)

Why Join Us:

• Collaborative work environment.
• Exposure to modern tools and scalable application architectures.
• Medical cover for employee and eligible dependents.
• Tax beneficial salary structure.
• Comprehensive leave policy
• Competency development training programs.

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.

📢 We’re Hiring: MEAN Stack Developer

Shift Timing: 10:00 AM – 7:00 PM

Location: Kolkata | Work Mode: Office | Immediate Joiner Preferred

We are looking for an experienced MEAN Stack Developer with strong knowledge of MongoDB, Express.js, Angular, and Node.js to join our dynamic development team.

Requirements:

• Minimum 4 years of experience in MEAN Stack Development.
• Strong proficiency in Node.js and Angular.
• Hands-on experience with MongoDB, Express.js, and RESTful APIs.
• Knowledge of Git or similar version control tools.
• Strong problem-solving and teamwork skills.
• Immediate joiner preferred.

About
we are building the next big thing in payments for Millennials. Payments are supposed to be simple, intuitive and fast, and we are ensuring that. As the indie creator economy grows, peer-to-peer payments and digital fulfilment will keep growing and a growing number of merchants are earning from direct payments for the digital creations. At Slash we are creating a platform for merchants to seamlessly connect and earn from their supporters and consumers, while also building a payment platform that Millennials will fall in love with.

Responsibilities

The platform that will drive payments at slash will be the social profiles and payment pages for the merchants. You will be responsible for building the social platform on which merchants can build their profiles, list items for sale, the APIs that power the entire UI experience for Slash.

• 3+ years of experience in NodeJS Backend development
• Good understanding of data structures, algorithms and system design
• Awareness of OOP paradigm, SOLID principles and design patterns
• Experience with TypeScript would be a bonus
• Experience with SQL and noSQL databases and ORMs like Sequelize and Mongoose
• Solid understanding of HTTP, Network principles, caching strategies
• Experience with authentication strategies like Oauth, JWT, passport.js
• Aptitude to work at early growing startup environment

This role is at high growth startup providing secure video hosting to media and e-learning businesses and thus in high requirement in current market. Site is at www.vdocipher.com. Already in revenues , profitable with 2000+ business customers across 40+ countries. Serving Petabytes of online video content. 

We use API-first approach to implement new features and create developer-friendly interfaces. We have a hybrid model between monolithic and micro-service system based on separation of concern and function.

Salary range -  is 21 to 26 LPA (CTC=Gross), The wide range is to accommodate candidates based on actual experience and skill set. ESOPs will also be granted.

2 to 5+ yrs of work experience expected.

Responsibilities

1. Developing new web services
2. Implementing new features to API
3. Provide secure authentication with role-based-access-controls.
4. Ensuring inter-operability of API with diverse customer frameworks through SDKs
5. Future-proofing of the API with unit testing and extensible design
6. Write and maintain API documentation
7. Choosing the right database and information flow for new features
8. Designing and maintaining the Database schema

Required skills

* Thorough knowledge of Nodejs development ecosystem

* Understanding of security practices and exploits on the web

* Handling authentication frameworks with jwt, oauth and related technologies

* Experience with stateless server apps for horizontal scaling

* Database best practices for optimizing query performance

* Understanding applications of relational vs no-sql databases

* Understanding of version control (Git, SVN)

* Basic understanding of a front-end web environment (HTML5, CSS)

* Write clean and reusable code by following coding standards

* Understanding of writing tests and automation frameworks

Hiring Process

1. Resume Shortlisting
2. 15 min Short introductory phone call 
3. Tech Round Interview 1 (75 mins)
4. 2nd Round Interview (Tech + HR , 1 hour 45 mins)

Aimed at building a massive parallel economy, This For That, is looking for highly driven engineers to build out a world class product. The product is in its early stages so there’s a lot to learn and build from scratch. You will get to work alongside seasoned business and marketing professionals and become part of the core engineering team.

Ideal skills:

1) 2-5 years of professional JavaScript development experience

2) Understanding of asynchronous programming and its quirks and workarounds

3) Comfortable working through the entire stack from the user interface through systems levels

4) Understanding accessibility and security compliance

5) Strong Logical and Analytical Skills

6) Experience in consuming web services (REST) and processing data (JSON)

7) Experience with SQLite, NoSQL, Redis or other databases

8) Proven experience in building API services using NodeJS Express and related frameworks

9) Good understanding of NodeJS asynchronous runtime

10) Good understanding of JS concepts on callbacks and closures

11) Experience in debugging issues related to memory leaks

12) Experience in building highly scalable and high throughput services with sub-second response times

13) Experience with ElasticSearch/Solr

14) Experience working in a collaborative team environment

15) Ability to understand and analyse issues across multiple vendors and interfaces

16) Experience with NoSQL queries

17) Experience with AWS

18) Experience in managing/mentoring small teams

In depth knowledge of all of the above is not mandatory but the nature of the work will involve learning and getting involved with all of the above. You would be working directly with key members of the management team to define and drive technical strategy.

Experience in the mobile space is mandatory. Please only apply if you have been part of building a mobile product. Since our product is mobile only, it is essential that you understand implications on the front end.