Full Stack Developer – AI Agent Platform (Express AI) at Express Text · Remote only · 3 - 6 years · $5K - $18K / yr · Profitable · Remote only · Posted 2 Jan 2026

Project Overview
We’re building Express AI, a SaaS platform that allows small and medium-sized businesses (SMBs) to easily train and deploy their own dedicated AI agents for customer service, technical support, sales, and more.
Our vision is to give SMBs the power of enterprise-grade AI without complexity. You’ll help build the core platform that powers this – including agent training interfaces, web deployment, dashboards, and integrations.
Key Responsibilities
• Develop scalable full-stack features using modern JavaScript frameworks
• Build and maintain AI agent training modules (upload docs, FAQs, tone settings)
• Integrate OpenAI, Whisper, LangChain, and other LLM APIs
• Implement user-facing dashboards for chat/voices/social/email agent monitoring
• Design multi-tenant systems with admin-level controls
• Ensure reliability and scalability of the platform as we grow
Tech Stack
• Frontend: React.js, Next.js, TypeScript
• Backend: Node.js, Express, MongoDB (or Postgres), Redis
• AI & NLP: OpenAI API (ChatGPT, Whisper), LangChain, Python (optional)
• DevOps: Docker, AWS or GCP (basic familiarity okay)
• Other: WebSockets for real-time chat, REST APIs, Git
Role Type
• Full Stack Developer (preferred)
• Frontend or Backend specialists also considered, but must be willing to collaborate on both sides
Experience Level
• 3 to 6 years of professional experience
• Previous work with SaaS platforms, AI tools, or multi-tenant architecture is a big plus
Must-Have Skills
• Proficiency in JavaScript/TypeScript
• Strong experience with React.js and Node.js
• Experience working with REST APIs and building secure web apps
• Solid understanding of cloud deployment (AWS/GCP/Firebase)
• Ability to work independently, self-manage, and deliver in a fast-paced environment
Nice-to-Have Skills
• Familiarity with LangChain, OpenAI, AI agent frameworks
• Experience with voice/chat integration
• Prior experience building tools for SMBs or customer support systems
Engagement Type
• Full-time (preferred) or part-time with clear weekly availability
• Remote (India-based candidates only)
Why Join Us?
• Work on a cutting-edge AI platform solving real problems for real businesses
• Fast-moving, no-red-tape team environment
• Build something that will impact millions of small businesses globally

About Express Text
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Similar jobs (10)
Total Experience: 4+ years
Mode of Hire: Permanent
Required Skills Set (Mandatory): HTML, JavaScript, Node.js, Express.js, MongoDB, React/Next.js, AI Integration (LLMs/APIs - OpenAI, Anthropic, Gemini)
Desired Skills (Good if you have): Cloud Platforms (AWS), System Design, Application Security
What is the role all about?
We're hiring full-stack engineers who build with AI, not the traditional way. You should be fluent in modern web engineering, primarily Node.js, and just as fluent in using LLMs and AI tools (Cursor, Claude Code, and similar) to ship fast. Work that once took a month should take a week; what took a week should take a day.
The role spans a range, from architecting backends for non-trivial products like assistants and agents, to rapidly turning a requirement into a clean, customer-facing app or MVP. Be strong in at least one area, be comfortable across the system as a whole, and tell us where you're strongest so we can place you accordingly.
What will you do?
- Plan, build, and ship product features end-to-end, with AI embedded where it has the most impact.
- Integrate LLMs and AI APIs into production-grade applications.
- Use AI tools to prototype, build, and deliver at high speed without sacrificing quality.
- Design scalable APIs and data models with Node.js, Express.js, and MongoDB.
- Build responsive, performant, customer-facing interfaces with React/Next.js.
- Contribute to design discussions, code reviews, and architectural decisions.
What are we looking for?
AI leverage:
- You've shipped real things using LLMs or AI APIs and instinctively reach for AI to move faster.
- Comfortable with prompt engineering and judging AI output for production-readiness.
Engineering depth and delivery:
- Solid fundamentals: problem-solving, data structures, and how systems fit together.
- At least 2+ years across frontend (React/Next.js), APIs (Node.js/Express.js), and databases (MongoDB).
- You write clean, production-grade code and you ship.
- Knowledge of application security or ethical hacking is an advantage.
Culture
- Work with performance-oriented teams driven by ownership and passion.
- Learn to design systems for high accuracy, efficiency, and scalability.
- No strict deadlines, focus on delivering quality work.
- Meritocracy-driven, candid culture. No politics.
- Very high visibility regarding which startups and markets are exciting globally.
About Tracxn
Tracxn (Tracxn.com) is a Bangalore-based product company that provides a research and deal-sourcing platform for Venture Capital, Private Equity, Corp Dev, and professionals in the startup ecosystem.
We are a team of 800+ working professionals serving customers across the globe. Our clients include Funds such as Andreessen Horowitz, Matrix Partners, and GGV Capital, as well as Large Corporates such as Citi, Embraer & Ferrero.
Founders
- Neha Singh (ex-Sequoia, BCG | MBA - Stanford GSB)
- Abhishek Goyal (ex-Accel Partners, Amazon | BTech - IIT Kanpur)
About Technology Team
Tracxn's Technology team is 50+ members strong and growing. The technology team is subdivided into multiple smaller teams, each of which owns one or more services/components of the technology platform. Ours is a young team of motivated engineers with a minimal management structure, in which almost everyone is actively involved in technical development and design. We have a team-centric culture where ownership and responsibility for a feature or module lie with a team rather than an individual.
We work on an array of technologies, including but not limited to ReactJS, Next.js, Storybook, Webpack, Node, Mongo, AWS Lambda, Spring, Elastic Stack, MySQL, Kafka, Redis, Ansible, etc.
We value ownership, continuous learning, consistency, and discipline as a team.
Role: Full Stack JavaScript/TypeScript Developer
We're looking for a Full Stack Developer with strong JavaScript/TypeScript fundamentals to join our team and help build AI-powered product features.
Responsibilities:
Core Skills & Competencies (Must have):
- Strong proficiency in TypeScript and solid JavaScript fundamentals
- Front-end development skills with the React ecosystem (Next.js), including state management libraries like Zustand, Redux
- Expertise in HTML/CSS, with experience creating responsive and adaptive designs
- Experience building AI-assisted features such as chatbots, content generation, semantic search, recommendations, or intelligent automation
- Experience with RESTful services and APIs
- Familiarity with AI SDKs, LLM APIs, and vector databases
- Experience with SQL and database management, understanding relational databases, and ability to write efficient and optimized queries
- Understanding of database design and management, especially with SQL
- Experience with version control systems such as Git
Desired Skills & Competencies (Nice to have):
- Experience with event-driven architecture
- Experience with cloud services like Azure or AWS
- Familiarity with modern DevOps practices
- Understanding of security practices and web application security
- Familiarity with CI/CD pipelines
What we're looking for:
- Strong command over JS/TS fundamentals, not just framework-level knowledge
- Candidates with internship experience or a background from a reputed engineering college preferred
- Please share your GitHub link, portfolio, or details of projects you've built (personal, academic, or professional)
Full-Stack Software Engineer | Remote
We're hiring a product-focused Full-Stack Engineer to join a small, fast-moving tech team. This is a hands-on role you'll build complete features across frontend, backend, APIs, databases, deployment, and increasingly, AI-assisted workflows.
What You'll Do:
- Build and ship full-stack features using modern JS/TypeScript, plus Java or Node.js on the backend
- Work across frontend, backend, APIs, databases, integrations, and deployment
- Apply secure engineering practices (auth, input validation, secrets, dependencies)
- Use AI tools for coding, debugging, testing, and code review
- Explore AI agents, tool calling, and MCP-based integrations
What We Need:
- 3+ years of professional software engineering experience
- Strong JS/TypeScript skills; experience with Angular or React
- Backend experience with Java, Node.js, or similar
- Comfortable with REST APIs, databases, Git, cloud environments
- Awareness of OWASP principles and application security
- Interest/experience in AI dev tools, Docker, CI/CD
We’re Hiring | Full Stack Developer
About MotionGility
MotionGility is building India's first AI-powered SaaS platform that automates explainer video production for SaaS/AI companies. We combine a Full AI tools stack into a single pipeline that takes a client's product brief and delivers a complete explainer video — script, illustrations, voiceover, and animation — in under a few minutes. We have 11 years of agency experience producing 500+ SaaS explainer videos and we are now building the platform that does this at scale, with AI.
This is an early-stage product role. You will be the first full-time developer on the team, working directly with the founders
Position: Full Stack Developer
Location: Indore (Onsite)
Type: Full-time
Experience: 2-3 Years
Notice Period: Immediate Joiner or Up to 30 Days Notice Period Accepted
Key Responsibilities
- Build and maintain the client-facing SaaS platform using React, Next.js, TypeScript, and Supabase.
- Develop project dashboards, approval workflows, and video delivery interfaces.
- Implement authentication, authorization, and role-based access control.
- Integrate payment gateways and third-party AI APIs.
- Build real-time project tracking and notification systems.
- Ensure application performance, scalability, and responsive design.
- Collaborate directly with founders on product development and technical decisions.
Tech Stack
Frontend: React, Next.js, TypeScript, Tailwind CSS
Backend: Supabase (PostgreSQL, Auth, Storage, Realtime, Edge Functions)
Payments: Razorpay
Automation: n8n Cloud
Deployment: Vercel / Netlify
AI Integrations: OpenAI, ElevenLabs, Recraft V3, Runway Gen-3, GPT Images, Nano Banana, Higgsfield, and related AI APIs
Requirements
Must-Have Skills
- Minimum 2 years of experience building and shipping React applications.
- Working knowledge of TypeScript and modern frontend development.
- Experience with SQL, PostgreSQL, or Supabase databases.
- Experience integrating at least one payment gateway in a production project.
- Ability to showcase at least one live deployed product built personally.
Preferred Skills
- Experience with Next.js (App Router and API Routes).
- Hands-on experience with Supabase Auth, RLS policies, and Realtime features.
- Prior experience in a startup or early-stage SaaS environment.
- Strong product thinking and problem-solving mindset.
This Role Is Not Suitable If
- You require detailed specifications before starting development.
- You cannot demonstrate a live product you have built.
- You depend heavily on senior developers for technical decisions.
- You prefer backend or infrastructure-focused roles over product development.
What You'll Gain
- Direct mentorship from experienced founders.
- Ownership of the complete client-facing product.
- Exposure to cutting-edge AI technologies and workflows.
- Flexible working culture focused on outcomes.
- Opportunity for ESOPs based on performance and contribution.
- Fast career growth with potential progression into leadership roles.
Position Overview
We are seeking a versatile Senior Full Stack & AI Agent Developer to architect, build, and
maintain end-to-end software solutions spanning web platforms, desktop applications, and
autonomous AI agents capable of interacting with and controlling these software systems.
The ideal candidate will bridge traditional engineering software with cutting-edge artificial
intelligence to automate data processing and enhance operational decision-making. While
not strictly required, a background or strong interest in the energy sector—specifically
drilling and completion operations—is highly desirable.
Key Responsibilities
• Full Stack Development: Design, develop, and deploy robust web applications and
native desktop software utilized by engineering and operational teams.
• AI Agent Engineering: Build, train, and integrate autonomous AI agents and LLM-
driven workflows capable of interpreting data, executing commands, and safely
controlling desktop and web-based software.
• Workflow Automation: Translate complex workflows into intuitive software features
and autonomous agent actions, minimizing manual data entry and operational
bottlenecks.
• Data Integration: Handle high-frequency data streams and integrate them seamlessly
into user interfaces and backend AI models.
• Architecture & Scalability: Ensure high performance, security, and scalability across
cloud infrastructure (AWS/Azure), local desktop environments, and potential edge
computing setups.
• Cross-Functional Collaboration: Work closely with domain experts and end-users to
translate field challenges into technical product requirements.
Required Qualifications & Experience
• Experience: Minimum of 5 years of professional software development experience,
with a proven track record of delivering production-ready web and desktop
applications.
• Programming Languages: Strong proficiency in Python, JavaScript/TypeScript, and at
least one compiled language (C#, C++, or Java).• Web & Desktop Frameworks: Hands-on experience with modern frontend
frameworks (React, Angular, or Vue.js), Node.js, and desktop application development
(Electron, WPF, Qt, or Tauri).
• AI & Agent Tooling: Demonstrated experience building AI agents using LLM APIs
(OpenAI, Anthropic), open-source models (Hugging Face), LangChain, LlamaIndex,
AutoGPT, or custom agent architectures.
• Automation & UI Control: Expertise in software control mechanisms using tools like
Selenium, Playwright, PyAutoGUI, Appium, or computer vision-based GUI automation to
allow AI agents to navigate software.
• Cloud, DevOps & Databases: Experience with Git, Docker, CI/CD pipelines, cloud
platforms (AWS/Azure/GCP), RESTful APIs, GraphQL, and relational/NoSQL databases.
Preferred Qualifications (Strong Plus)
• Industry Domain Expertise: Prior hands-on development experience within the oil and
gas sector, specifically focused on drilling, completions, rig operations, or subsurface
engineering software.
• Data & Protocols: Familiarity with oilfield data standards (e.g., WITSML, OPC-UA) and
time-series databases.
• Experience deploying AI models and agents in edge or low-connectivity environments
(such as offshore rigs or remote drilling sites).
• Familiarity with safety-critical software design and cybersecurity standards in
industrial control systems (ICS/SCADA).
• Degree in Computer Science, Software Engineering, Petroleum Engineering, or a related technical discipline.
Full Stack Developer
Experience: 3 to 5 Years
Location: Hyderabad
Interview Mode: Face-to-Face (F2F)
Work Mode: Hybrid
Employment Type: Full-Time
Note: Immediate joiners or candidates with a notice period of up to 15 days are preferred. We are only considering candidates who can attend a face-to-face interview at our office.
Role Summary;
We are looking for a Full Stack Developer (React.js + Python + AWS + AI) to design, develop, and maintain scalable web applications and AI-powered solutions. The ideal candidate must have strong experience in React.js, Python, AWS, and AI development. Hands-on AI development experience is mandatory for this role.
Mandatory AI Skill Requirement - AI development experience is mandatory. Candidates without hands-on AI development experience will not be considered.
Candidates must have practical experience in one or more of the following:
- Building AI-powered applications.
- Working with Large Language Models (LLMs).
- Prompt Engineering.
- Retrieval-Augmented Generation (RAG).
- AI agent development using LangChain, LangGraph, or similar frameworks.
- Integrating AI models through APIs such as OpenAI, Anthropic, or Gemini.
- Developing AI-enabled workflows and intelligent business applications.
Note: Experience using AI coding assistants (ChatGPT, GitHub Copilot, Claude, Gemini, etc.) alone does not meet this requirement. Candidates must have actual AI application development experience.
Key Responsibilities
- Develop and maintain full-stack web applications.
- Build responsive frontend applications using React.js.
- Develop backend REST APIs using Python (FastAPI / Django / Flask).
- Design, develop, and integrate AI-powered features into applications.
- Develop and deploy applications on AWS cloud services.
- Work with relational databases (MySQL / PostgreSQL / SQL Server).
- Integrate frontend and backend components.
- Follow Agile/Scrum development processes.
- Write clean, maintainable, and production-ready code.
- Collaborate with cross-functional teams to deliver scalable and high-quality solutions.
Required Skills (Mandatory)
- 3 to 5 years of Full Stack development experience.
- Strong experience in React.js.
- Strong backend development experience in Python.
- Hands-on experience with AWS cloud services.
- Hands-on AI development experience (Mandatory).
- Experience with LLMs, Prompt Engineering, RAG, LangChain, LangGraph, or similar AI frameworks.
- REST API development experience.
- Strong SQL database experience.
- Git and Agile development workflow.
- Good understanding of software design principles and best practices.
Good to Have
- Docker
- CI/CD pipelines
- Microservices architecture
- Kubernetes
- Experience with vector databases and AI model integrations
Preferred Qualifications
- Bachelor's degree in Computer Science or a related field.
- Strong problem-solving and analytical skills.
- Good communication and teamwork abilities.
- Passion for learning new technologies, especially AI, cloud technologies, and modern software development.
What role will you play?
As a Full Stack Engineer, you will play a pivotal role in our development team, bridging the gap between the visual elements and the server-side infrastructure. You will be instrumental in developing full-fledged, scalable applications by combining the art of design with the science of programming. With your expertise in both front-end and back-end technologies, you will ensure the entire stack is designed and built for speed and functionality.
Your day to day will involve designing and developing dynamic, high-quality web applications, leveraging the Node.js and python for the back end services and React/Angular for the front end. Close collaboration with UI/UX designers will be essential, allowing you to bring web designs to life while ensuring high performance and responsiveness. Additionally, you will actively participate in coding, debugging, and testing to deliver reliable solutions whilst also working closely with other developers, designers, and product managers, fostering a collaborative environment to meet project goals and deadlines effectively.
What you offer
- Proficiency in Typescript and a good understanding of React
- Solid experience with the Node.js, including the ability to develop RESTful APIs
- Experience with containerisation of service using Docker
- Knowledge of modern authorisation mechanisms, such as JSON Web Token (JWT)
- Familiarity with SQL databases, such as PostgreSQL
- Experience with Kafka or other event driven tools and tech
- Nice to have some experience integrating with LLMs through open AI, Gemini etc.
- Nice to have exposure to AI tooling – Claude, Copilot, Cursor etc.
- AWS experience is a nice to have
Full Stack Developer — Node.js & React
Experience: 4-5 years
Employment Type: Permanent, Full-time
Desired Skill: Node, React, AWS, Typescript, GraphQL APIs
Work Mode: Remote
Availability: Immediate Joiners
We are looking for a Full Stack Developer to implement functional features and resolve production support and on-call tickets. You will build GraphQL APIs, UI screens, and integrations based on defined requirements and designs.
Responsibilities
- Develop and maintain features using Node.js, TypeScript, React, and Next.js.
- Build GraphQL APIs, database integrations, and backend workflows.
- Investigate support issues, identify root causes, and deliver reliable fixes.
- Write automated tests and collaborate with product, design, and engineering teams.
Required skills
- Strong experience with Node.js, Express, TypeScript, React, GraphQL, and PostgreSQL.
- Strong analytical, troubleshooting, and debugging skills across frontend and backend systems.
- Familiarity with automated testing and AWS environments.
Our stack
React SPA (Vite), Next.js, MUI, React Router, urql, tRPC; PostGraphile, slonik, graphile-worker, Temporal; PostgreSQL and DynamoDB; Storybook, Vitest, Cypress; AWS and Terraform.
Total Experience: 4+ years
Mode of Hire: Permanent
Required Skills Set (Mandatory): HTML, JavaScript, Node.js, Express.js, MongoDB, React/Next.js, AI Integration (LLMs/APIs - OpenAI, Anthropic, Gemini)
Desired Skills (Good if you have): Cloud Platforms (AWS), System Design, Application Security
What is the role all about?
We're hiring full-stack engineers who build with AI, not the traditional way. You should be fluent in modern web engineering, primarily Node.js, and just as fluent in using LLMs and AI tools (Cursor, Claude Code, and similar) to ship fast. Work that once took a month should take a week; what took a week should take a day.
The role spans a range, from architecting backends for non-trivial products like assistants and agents, to rapidly turning a requirement into a clean, customer-facing app or MVP. Be strong in at least one area, be comfortable across the system as a whole, and tell us where you're strongest so we can place you accordingly.
What will you do?
- Plan, build, and ship product features end-to-end, with AI embedded where it has the most impact.
- Integrate LLMs and AI APIs into production-grade applications.
- Use AI tools to prototype, build, and deliver at high speed without sacrificing quality.
- Design scalable APIs and data models with Node.js, Express.js, and MongoDB.
- Build responsive, performant, customer-facing interfaces with React/Next.js.
- Contribute to design discussions, code reviews, and architectural decisions.
What are we looking for?
AI leverage:
- You've shipped real things using LLMs or AI APIs and instinctively reach for AI to move faster.
- Comfortable with prompt engineering and judging AI output for production-readiness.
Engineering depth and delivery:
- Solid fundamentals: problem-solving, data structures, and how systems fit together.
- At least 2+ years across frontend (React/Next.js), APIs (Node.js/Express.js), and databases (MongoDB).
- You write clean, production-grade code and you ship.
- Knowledge of application security or ethical hacking is an advantage.
Culture
- Work with performance-oriented teams driven by ownership and passion.
- Learn to design systems for high accuracy, efficiency, and scalability.
- No strict deadlines, focus on delivering quality work.
- Meritocracy-driven, candid culture. No politics.
- Very high visibility regarding which startups and markets are exciting globally.
About Tracxn
Tracxn (Tracxn.com) is a Bangalore-based product company that provides a research and deal-sourcing platform for Venture Capital, Private Equity, Corp Dev, and professionals in the startup ecosystem.
We are a team of 800+ working professionals serving customers across the globe. Our clients include Funds such as Andreessen Horowitz, Matrix Partners, and GGV Capital, as well as Large Corporates such as Citi, Embraer & Ferrero.
Founders
- Neha Singh (ex-Sequoia, BCG | MBA - Stanford GSB)
- Abhishek Goyal (ex-Accel Partners, Amazon | BTech - IIT Kanpur)
About Technology Team
Tracxn's Technology team is 50+ members strong and growing. The technology team is subdivided into multiple smaller teams, each of which owns one or more services/components of the technology platform. Ours is a young team of motivated engineers with a minimal management structure, in which almost everyone is actively involved in technical development and design. We have a team-centric culture where ownership and responsibility for a feature or module lie with a team rather than an individual.
We work on an array of technologies, including but not limited to ReactJS, Next.js, Storybook, Webpack, Node, Mongo, AWS Lambda, Spring, Elastic Stack, MySQL, Kafka, Redis, Ansible, etc.
We value ownership, continuous learning, consistency, and discipline as a team.
We’re Hiring | Full Stack Developer
About MotionGility
MotionGility is building India's first AI-powered SaaS platform that automates explainer video production for SaaS/AI companies. We combine a Full AI tools stack into a single pipeline that takes a client's product brief and delivers a complete explainer video — script, illustrations, voiceover, and animation — in under a few minutes. We have 11 years of agency experience producing 500+ SaaS explainer videos and we are now building the platform that does this at scale, with AI.
This is an early-stage product role. You will be the first full-time developer on the team, working directly with the founders
Position: Full Stack Developer
Location: Indore (Onsite)
Type: Full-time
Experience: 2-3 Years
Notice Period: Immediate Joiner or Up to 30 Days Notice Period Accepted
Key Responsibilities
- Build and maintain the client-facing SaaS platform using React, Next.js, TypeScript, and Supabase.
- Develop project dashboards, approval workflows, and video delivery interfaces.
- Implement authentication, authorization, and role-based access control.
- Integrate payment gateways and third-party AI APIs.
- Build real-time project tracking and notification systems.
- Ensure application performance, scalability, and responsive design.
- Collaborate directly with founders on product development and technical decisions.
Tech Stack
Frontend: React, Next.js, TypeScript, Tailwind CSS
Backend: Supabase (PostgreSQL, Auth, Storage, Realtime, Edge Functions)
Payments: Razorpay
Automation: n8n Cloud
Deployment: Vercel / Netlify
AI Integrations: OpenAI, ElevenLabs, Recraft V3, Runway Gen-3, GPT Images, Nano Banana, Higgsfield, and related AI APIs
Requirements
Must-Have Skills
- Minimum 2 years of experience building and shipping React applications.
- Working knowledge of TypeScript and modern frontend development.
- Experience with SQL, PostgreSQL, or Supabase databases.
- Experience integrating at least one payment gateway in a production project.
- Ability to showcase at least one live deployed product built personally.
Preferred Skills
- Experience with Next.js (App Router and API Routes).
- Hands-on experience with Supabase Auth, RLS policies, and Realtime features.
- Prior experience in a startup or early-stage SaaS environment.
- Strong product thinking and problem-solving mindset.
This Role Is Not Suitable If
- You require detailed specifications before starting development.
- You cannot demonstrate a live product you have built.
- You depend heavily on senior developers for technical decisions.
- You prefer backend or infrastructure-focused roles over product development.
What You'll Gain
- Direct mentorship from experienced founders.
- Ownership of the complete client-facing product.
- Exposure to cutting-edge AI technologies and workflows.
- Flexible working culture focused on outcomes.
- Opportunity for ESOPs based on performance and contribution.
- Fast career growth with potential progression into leadership roles.






