Senior Backend Engineer (Node.js, AI- Top b2c product company only)

About the Role

LeadSquared is looking for a Backend Heavy Engineer with strong expertise in Java backend development and hands-on experience working with chatbots / conversational systems.

The ideal candidate should have a strong foundation in backend engineering, distributed systems and API development, along with exposure to building or integrating chatbot, conversational AI or messaging-based solutions.

Key Responsibilities

• Design, develop and maintain scalable backend services and APIs using Java.
• Build high-performance, reliable and secure microservices-based applications.
• Develop and integrate chatbot / conversational platforms with backend systems.
• Work on chatbot workflows, conversation flows, APIs, integrations and business logic.
• Integrate backend services with LLM/AI-powered conversational systems, where required.
• Build RESTful APIs and integrations with internal and third-party platforms.
• Work with databases, caching, queues and distributed systems to support scalable applications.
• Troubleshoot performance, reliability and production issues.
• Collaborate with Product, AI/ML, Frontend and Engineering teams to deliver end-to-end solutions.
• Participate in architecture discussions, code reviews and technical design.
• Write clean, maintainable and well-tested production-grade code.

Must-Have Skills

• 4–6 years of strong backend development experience.
• Strong hands-on experience with Java, Spring Boot and REST APIs.
• Good understanding of Microservices architecture.
• Experience with SQL databases such as MySQL/PostgreSQL.
• Good understanding of data structures, algorithms and object-oriented programming.
• Hands-on experience with chatbots, conversational applications, chatbot frameworks or messaging platforms.
• Experience integrating chatbot systems with backend APIs/services.
• Understanding of asynchronous processing, queues and event-driven architecture.
• Good understanding of Git, CI/CD and production deployment practices.

Good to Have

• Experience with Generative AI / LLM-based chatbots.
• Exposure to RAG, embeddings, prompt engineering or LLM APIs.
• Experience with Kafka, Redis, Elasticsearch or similar technologies.
• Cloud experience with AWS/Azure/GCP.
• Experience with Docker/Kubernetes.
• Experience building customer-facing SaaS products.
• Exposure to CRM, MarTech, SalesTech or enterprise platforms.

Ideal Candidate

We are looking for someone who is backend-first and Java-heavy, but has also worked on chatbot/conversational use cases. The candidate should be comfortable owning backend services end-to-end and collaborating with AI/ML teams to build scalable conversational experiences.

Ideal profile:

Java + Spring Boot + Microservices + Strong Backend Engineering + Chatbot/Conversational AI Experience.

• We are looking for a strong backend developer with good experience in AWS.
• Should be able to write solid and clean code.
• Should be good with algorithms and architecture.

Job Title: Senior Node.js Developer

Company: Transact Bridge

Location: Noida, Uttar Pradesh

Experience: 4–7 Years

Industry: FinTech / Payments / Cross-Border Commerce (LinkedIn)

About the Company:

Transact Bridge is a fast-growing fintech company enabling global businesses to expand into India through its Merchant of Record (MoR) infrastructure. The company specialises in payment processing, compliance management, subscription billing, taxation, and cross-border payment solutions for global SaaS, digital product, and e-commerce businesses. (LinkedIn).

Role Overview:

We are looking for a highly skilled Senior Node.js Developer to join our engineering team. The ideal candidate will have strong experience building scalable backend systems, APIs, and microservices in high-growth product environments. Experience in fintech, payment gateways, subscription platforms, or transaction-heavy applications will be a strong advantage.

Key Responsibilities:

• Design, develop, and maintain scalable backend applications using Node.js and TypeScript.
• Build and optimize RESTful APIs and microservices architecture.
• Integrate payment gateways, third-party APIs, and external services.
• Develop secure, high-performance, and fault-tolerant systems.
• Collaborate with product, frontend, and DevOps teams to deliver new features.
• Optimize database performance and ensure data integrity.
• Write clean, reusable, and maintainable code following best practices.
• Participate in code reviews, architecture discussions, and technical planning.
• Troubleshoot production issues and implement long-term solutions.
• Ensure application security, scalability, and compliance standards.

Required Skills:

• 4–7 years of experience in backend development.
• Strong expertise in Node.js, Express.js, and TypeScript.
• Experience building REST APIs and microservices.
• Strong understanding of asynchronous programming and event-driven architecture.
• Hands-on experience with MongoDB or similar databases.
• Experience with Redis, caching strategies, and queue management systems.
• Familiarity with AWS, Lambda, Docker, and cloud-native applications.
• Knowledge of Git, Github workflow pipelines, and software development best practices.
• Strong problem-solving and debugging skills.

Good to Have:

• Experience in FinTech, Payments, Banking, SaaS, or Subscription-based products.
• Exposure to payment gateways, UPI, recurring payments, and transaction processing.
• Experience with GraphQL, Kafka, RabbitMQ, or similar technologies.
• Knowledge of system design and distributed architectures. (Get Me Referred)

What We Offer:

• Opportunity to work on a global fintech product.
• Exposure to cross-border payment infrastructure and high-scale systems.
• Fast-paced startup environment with ownership and growth opportunities.
• Collaborative engineering culture and direct impact on product development.
• Competitive compensation and performance-driven growth.

Must have,

- Fundamental of Python(Data types in python, scope of variable, asynchronous programming)
- Should be able to code in Python

- Basic Understanding of Database

- API designing

- Problem Solving skills

- Fundamentals of storage, caching

Good to have,

- AWS Knowledge,

- Python Framework(Django, Flask)

- Knowledge on Message Broker, Caching

- SQL and no-SQL database

• Architect new systems and improve existing ones by instrumenting best practices and technologies.
• Identify and build automated tools for release management, deployment, monitoring and reporting
• Identity and implement latest technologies and frameworks for application system stack, deployments, automation, capacity management, resource orchestration and availability.
• Responsible for fixing support escalation cases and conducting post-incident reviews / Root Cause Analysis.

Responsibilities:

• Develop, implement, and maintain production timelines across multiple teams
• Translate product’s strategy into detailed requirements for prototype construction and final product development
• Analyze consumer needs, current market trends, and potential partnerships from an ROI
• Outline the product vision, product strategy, and product roadmap
• Assess current competitor offerings, seeking opportunities for differentiation
• Appraise new product ideas and strategize appropriate to-market plans
• Ensure that user story content and prioritization is aligned to the larger strategic objective
• Recommend the scope of present and future product lines by reviewing product specifications and appraising adjustments
• Provide information for management by preparing product sales forecasts and reports
• Meet regularly with key customer-facing teams to collect and analyze user feedback to shape new product ideas and user requirements.
• Help in the creation and maintenance of bona fide product documentation
• Work with development leads so that product requirements are understood and built accordingly
• Work within a software development methodology like AGILE
• Coordinate product releases with marketing, sales, and development teams
• Provide product training and technical expertise
• Work with the leadership team in planning the product roadmap.
• Be the product owner driving our strategic product and technology vision on the platform side of products 

Requirement:

• 3+ years of experience as a Technical Products Manager in a software company.
• Has deep knowledge of every stage of the product life-cycle -- introduction, growth, maturity, and decline -- and understands how it affects development adjustments.
• Critical thinker & problem solver
• Familiarity in the AGILE development framework will be preferable.
• Strong understanding of cutting-edge tools and technologies for frontend and backend development
• Data-oriented, have exceptional analytical skills
• Experience working with the development teams directly will be a plus
• Has the ability to set priorities and resolve issues and set realistic product development goals
• Should be able to communicate technical solutions to both internal and external audiences
• Understand industry flow and trends
• Has the ability to evaluate key metrics to optimize performance
• Demonstrated track record managing successful product development from feature definition to project deployment
• Work with product management analytics tools
• A people-friendly person with extraordinary organizational and leadership skills

We're looking for Senior Node js backend developers with over 2+ years of experience and strong expertise in Javascript based development using Node js and Express. We are looking for cadidates who are go-getters and are leaning towards leadership positions. Candidates must have a proven history of building, scaling, optimising and securing Node js based backends and APIs using a microservice architecture.

Bonus Skill : Experience with ReactJs, Postgres

We would prefer candidates who can join immediately or are currently serving their notice period.

Key Skills Required

1. A passion for Javascript based solutions and an extremely strong understanding of JavaScript

2. Proficiency in Node js and Express based development

3. Stong experience in building scalable REST APIs

4. Experience in implenting API security using tokens, encryptions keys and other methods

5. A proved history of building scalable and secure web applications and APIs with Node js using a microservice architecture

6. Working experience with API Gateways

7. Experience with Docker

8. Experience in maintaining code via Git workflows

9. Ability to work independantly or as a part of a team

10. Ability to work in an Agile environment

Responsibilities

1. Understanding requirement and congributing to engineering solutions at a conceptual stage to provide the best possible solution to the task/challenge

2. Building high quality code using coding standards based on the SRS/Documentation

3. Building component based, maintainable, scalable and reusable backend libraries/modules.

4. Building & documenting scalable APIs on the Open Spec standard

5. Unit testing development modules and APIs

6. Conducting code reviews to ensure that the highest quality standard are maintained

7. Securing backend applications and APIs using industry best practices

8. Troubleshooting issues and fixing bugs raised by the QA team efficiently.

9. Optimizing code

10. Building and deploying the applications

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)