Full stack developer

We’re building a powerful, AI-driven communication platform — a next-generation alternative to RingCentral or 8x8 — powered by OpenAI, LangChain, and SIP/WebRTC. We're looking for a Full-Stack Software Developer who’s passionate about building real-time, AI-enabled voice infrastructure and who’s excited to work in a fast-moving, founder-led environment.

This is an opportunity to build from scratch, take ownership of core systems, and innovate on the edge of VoIP + AI.

What You’ll Do

• Design and build AI-driven voice and messaging features (e.g. smart IVRs, call transcription, virtual agents)
• Develop backend services using Python, Node.js, or Golang
• Integrate OpenAI, Whisper, and LangChain with real-time VoIP systems like Twilio, SIP, or WebRTC
• Create scalable APIs, handle call logic, and build AI pipelines
• Collaborate with the founder and early team on product strategy and infrastructure
• Participate in occasional in-person strategy meetings (Delhi, Bangalore, or nearby)

Must-Have Skills

• Strong programming experience in Python, Node.js, or Go
• Hands-on experience with VoIP/SIP, WebRTC, or tools like Twilio, Asterisk, Plivo
• Experience integrating with LLM APIs, OpenAI, or speech-to-text models
• Solid understanding of backend design, Docker, Redis, PostgreSQL
• Ability to work independently and deliver production-grade code

Nice to Have

• Familiarity with LangChain or agent-based AI systems
• Knowledge of call routing logic, STUN/TURN, or media servers (e.g. FreeSWITCH)
• Interest in building scalable cloud-first SaaS products

Work Setup

• 🏠 Remote work (India-based, must be reachable for meetings)
• 🕐 Full-time role
• 💼 Direct collaboration with founder (technical)
• 🧘‍♂️ Flexible hours, strong ownership culture

HelloTrade is a wholly-owned subsidiary of Indiamart, India’s largest B2B marketplace. We are building a next-generation financial services and wealth management platform for MSMEs.

Leveraging Indiamart’s user base of over 20 million SMEs, HelloTrade aims to revolutionize access to business loans, insurance, credit cards, deposits, and financing solutions.

Our vision is to become the financial operating system for Indian MSMEs—simplifying access to credit, enabling smarter financial decisions, and building long-term financial health.

Role Overview:

We’re looking for a Tech Lead who will own the development of HelloTrade’s fintech platform.

This is a founding engineer + leadership role, where you’ll be hands-on in building scalable systems while shaping the engineering culture and aligning technology decisions with business goals.

The ideal candidate blends strong technical depth with leadership skills—someone who can code, mentor, set engineering standards, and drive delivery in a fast-paced, startup-style environment.

Key Responsibilities:

Technology Leadership

• Own key technical decisions and the overall tech roadmap aligned with HelloTrade’s fintech vision.
• Design scalable, modular, and secure architecture to support multi-product financial journeys.
• Make build-vs-buy and architectural decisions balancing speed, scalability, and compliance.
• Stay current on fintech innovations (AI/ML credit scoring, Account Aggregator APIs, digital KYC) and introduce relevant solutions.

Execution Excellence

• Be hands-on with coding and code reviews while balancing leadership duties.
• Oversee AWS infrastructure, DevOps pipelines, monitoring, and cost optimization.
• Ensure platform reliability, scalability, and security with proactive risk management.
• Deliver features on time and with quality, managing dependencies and trade-offs effectively.

People & Team Leadership

• Lead and mentor developers—setting engineering best practices, coding standards, and review processes.
• Build an engineering culture of ownership, accountability, and innovation.
• Drive agile practices (sprints, standups, retrospectives) for predictable delivery.
• Collaborate closely with Product, Design, and Business teams for seamless execution.

Must-Have Skills

• Strong proficiency in Next.js, Node.js, PostgreSQL, and AWS with 3+ years of hands-on development.
• Proven experience leading teams (mentoring, code reviews, sprint leadership).
• Expertise in designing and building scalable APIs and microservices.
• Strong understanding of system architecture, database design, and performance tuning.
• Experience with secure authentication, authorization, and partner integrations.
• Proficiency in Git, CI/CD pipelines, Docker/Kubernetes.
• Excellent communication and stakeholder management skills.

Good-to-Have Skills

• Experience in fintech or financial services (loans, payments, insurance).
• Familiarity with OCR, AI/ML-driven decision engines, or Account Aggregator APIs.
• Knowledge of DevSecOps and regulatory compliance frameworks.
• Prior experience in early-stage or startup environments, scaling teams and systems.

Job Overview:

We are seeking a motivated and enthusiastic Junior AI/ML Engineer to join our dynamic team. The ideal candidate will have a foundational knowledge in machine learning, deep learning, and related technologies, with hands-on experience in developing ML models from scratch. You will work closely with senior engineers and data scientists to design, implement, and optimize AI solutions that drive innovation and improve our products and services.

Key Responsibilities:

• Develop and implement machine learning and deep learning models from scratch for various applications.
• Collaborate with cross-functional teams to understand requirements and provide AI-driven solutions.
• Utilize deep learning frameworks such as TensorFlow, PyTorch, Keras, and JAX for model development and experimentation.
• Employ data manipulation and analysis tools such as pandas, scikit-learn, and statsmodels to preprocess and analyze data.
• Apply visualization tools like matplotlib and spacy to present data insights and model performance.
• Demonstrate a general understanding of data structures, algorithms, multi-threaded programming, and distributed computing concepts.
• Leverage knowledge of statistical and algorithmic models along with fundamental mathematical concepts, including linear algebra and probability.

Qualifications:

• Bachelor’s or Master’s degree in Computer Science, Data Science, Statistics, or a related field.
• Solid foundation in machine learning, deep learning, computer vision, and natural language processing (NLP).
• Proven experience in developing ML/deep learning models from scratch.
• Proficiency in Python and relevant libraries.
• Hands-on experience with deep learning frameworks such as TensorFlow, PyTorch, Keras, or JAX.
• Experience with data manipulation and analysis libraries like pandas, scikit-learn, and visualization tools like matplotlib.
• Strong understanding of data structures, algorithms, and multi-threaded programming.
• Knowledge of statistical models and fundamental mathematical concepts, including linear algebra and probability.

Skills and Competencies:

• Excellent problem-solving skills and attention to detail.
• Strong communication and collaboration abilities.
• Ability to work independently and as part of a team in a fast-paced environment.
• Eagerness to learn and stay updated with the latest advancements in AI/ML technologies.

Preferred Qualifications:

• Previous internship or project experience in AI/ML.
• Familiarity with cloud-based AI/ML services and tools.

Nirwana.AI is an equal opportunity employer and welcomes applicants from all backgrounds to apply.

Job Title: Senior Full Stack Developer 

Location: Chennai / Coimbatore 

Position Type: Full-Time 

About Us: 

At Justo Global, we are dedicated to empowering Small and Medium Enterprises (SMEs) around the world through our primary driver’s technology, data, and media. Our primary objective is to establish a global platform that effectively connects SMEs from India, developing countries, and beyond to the international market. Our mission revolves around creating an inclusive environment where SMEs can leverage the power of technology, data, and media to drive their success. 

What We’re Looking For: 

Minimum 5 - 8 years of work experience in Software application development. 

• 3+ Years of experience as a full stack developer with experience in the design and implementation of UI using React.js. 
• 5+ Years of experience in developing APIs using Node.js, and having experience with Golang will be an added advantage. 
• Proven experience in React design guidelines, SDK, and excellent JavaScript skills. 
• Experience working with SQL and NoSQL-based databases such as Oracle, MySQL, PostgreSQL, MongoDB. 
• Familiarity with API security models including but not limited to OAuth, JSON Web Token, Digital Certificates, Basic Authentication, and OpenID. 
• Exposure to DevOps culture with hands-on experience in Jenkins for CI/CD would be an added advantage. 
• Knowledge of containerization utilizing Docker and Kubernetes will be an added advantage. 

Responsibilities: 

• Demonstrate a strong sense of ownership and responsibility with release goals. This includes understanding requirements, technical specifications, design, architecture, implementation, unit testing, builds/deployments, and code management. 
• Ensure compliance through the adoption of enterprise standards and promotion of best practice / guiding principles aligned with organization standards. 
• Build and maintain the environment for speed, accuracy, consistency, and ‘up’ time. 
• Hands-on position requiring strong analytical, architectural, development, and debugging skills that includes both development and operations. 
• Developing front-end website architecture and designing user interactions on web pages, ensuring the responsiveness of applications. 
• Developing back-end APIs and creating servers and databases for functionality. 
• Working alongside graphic designers for web design features. 
• Designing and developing APIs meeting both technical and consumer needs. 

The Team: 

You will be part of an exciting talent group, where we have a dynamic team of engineers to solve the many challenges and puzzles of our rapidly evolving technical stack. We’re seeking a Senior full stack developer who is ready to work with new technologies and architectures in a forward-thinking organization that’s always pushing boundaries. This person will have complete, end-to-end ownership of projects. The ideal candidate has experience building products across the stack and a firm understanding of web frameworks, APIs, databases, and multiple back-end languages. The full stack developer will join a small team that uses new technology to solve challenges for both the front-end and back-end architecture, ultimately delivering amazing experiences for global users. 

We are looking for a Full Stack Developer to produce scalable software solutions. You’ll be part of a cross-functional team that’s responsible for the full software development life cycle, from conception to deployment.

As a Full Stack Developer, you should be comfortable with both front-end and back-end coding languages, development frameworks, and third-party libraries. You should also be a team player with a knack for visual design and utility.

If you’re also familiar with Agile methodologies, we’d like to meet you.

The exciting part of joining our organization is here for you. Once you complete a career span of 1year and above in our company based on your performance, you will get an opportunity to work in our onshore office in "Australia".

• Work with development teams and product managers to ideate software solutions
• Design client-side and server-side architecture
• Build the front-end of applications through appealing visual design
• Develop and manage well-functioning databases and applications
• Write effective TDD and BDD driven APIs
• Test software to ensure responsiveness and efficiency
• Troubleshoot, debug and upgrade software
• Create security and data protection settings
• Build features and applications with a mobile responsive design
• Write technical documentation
• Work with data scientists and analysts to improve software

The ideal candidate should be a proactive individual with strong communication skills and a team player. He or she should have experience of at least 5+ years in MEAN stack development.

Should have hands-on experience in the following:

• Hands-on experience in designing and developing applications using MEAN stack and have at
• least 5+ years experience on the same.
• Should have excellent in-depth knowledge of Nodejs and Mongo DB.
• Working knowledge of RESTful web services.
• Working knowledge of Angular js.
• Basic understanding of front-end technologies, such as HTML5, and CSS3.
• Integration of user-facing elements developed by front-end developers with server-side logic
• Design and implementation of low-latency, high-availability, and performant applications
• Proficient understanding of code versioning tools, such as Git
• Good communication skills.
• Experience in working effectively within a team

The ideal candidate will be responsible for developing and maintaining the entire technology stack of Walnut Schools, consisting of school management software, e-Learning software, mobile apps and Google Apps Scripts.

Responsibilities

• Develop quality software and web applications
• Analyze and maintain existing software applications
• Design highly scalable, testable code
• Discover and fix programming bugs

Qualifications

• Bachelor's degree or equivalent experience in Computer Science or related field
• 2+ years of active development experience with PHP (Code Igniter, Symfony), React.js, MySQL, Web Applications, GIT
• Puzzle solver
• Tinkerer who loves to create new products

Full Stack Engineer

Front End Technology:

• Minimum 2+ years’ experience in working web development technologies

• Experience writing modular/reusable code and using modern JS frameworks / libraries like

React or other comparable frameworks or toolkits

• Strong expertise with HTML5, CSS, and writing cross-browser compatible code.

. Experience with Responsive Frameworks like Bootstrap / Flex.

• Strong knowledge of Object-Oriented Design concepts.

Back end Technology:

• Have extensive experience in designing a backend stack of the product

• Strong understanding of Data Structures / Algorithms.

• Minimum of 2+ years of experience in Writing Backend Microservices in Node

JS/Python

• Ability to build the product from scratch & drive it to completion

Responsibilities and Duties:

• Design and build a next-generation product that drives the business and meets the functional

needs of our customers and partners.

• Designing overall architecture of the web/ mobile application

• Maintain quality and ensure responsiveness of applications

• Optimize web applications to maximize speed and scale. Support diverse clients from high

powered desktop computers to small footprint mobile devices.

• Write client-side/backend code for web-based applications, create fast, easy-to-use, high

volume production applications, and develop prototypes quickly.

• Build reusable code and libraries for future use

• Develop application code and unit test (Karma, Mocha, Chai).

• Ensuring high performance and security of web apps developed.

Employment Type

Full-time

Job Functions:

• Engineering

• Information Technology

Skills

• Object-Oriented Programming (OOP)

• JavaScript

• Data Structures

• Front-end Development

• Algorithms

• React js
• Express js

• Swagger

• Github

Qualifications

• Experience in building scalable systems.

• Exposure in building and using reusable code and libraries.

• Candidates should proactively keep their knowledge and skills up to date.

• Candidates should be able to work in a fast-paced environment independently and as part of a team.

• Candidates should be able to work in a highly collaborative environment with excellent communication skills.

Other Skills:

• Excellent written and verbal communication skills.

• Ability to work in a dynamic, fast-moving, and growing environment.

• Critical thinker and problem-solving skills. Should be able to strategize immediately.

• Strong knowledge of web application architectures, trends, and emerging technologies.