
BuyBuildSell InfraTech unifies design, manpower and material into one intelligent platform. As founding engineer, you'll architect the AI systems at its core - turning a client's plain-language request into design options, specifications and material requirements people can actually build from. Not a seat on a large team executing a settled spec: the systems you ship in month one become the foundation everything else is built on.
~ WHAT YOU'LL DO
• Build the AI reasoning layer - LLM-based intent parsing, option generation, retrieval-grounded suggestions.
• Architect the deterministic engine - rules-based calculations for specs, quantities and cost, kept strictly separate from anything AI-generated.
• Own the full stack - backend, APIs, data, frontend and infrastructure, end to end, with no platform team to hand off to.
• Ground the system in reality - work with our architects and structural engineers to encode real construction rules.
• Shape the roadmap - sit close to real usage and help decide what gets built next, not just how.
~ Qualifications:
• B.Tech / B.E. in CS, AI/ML or related.
• 2–5 years shipping production software.
• Hands-on LLM integration - prompt design,
structured output, RAG fundamentals.
• Proven end-to-end ownership: backend, data,
enough frontend/deploy to ship solo.
• Can explain, unprompted, why critical logic belongs
outside an LLM call.
Preferred:
• Early or founding engineer experience at a startup.
• Exposure to construction, real estate or physical-world marketplaces.
• Computer vision or vernacular NLP exposure (future roadmap).
• Production RAG / vector search experience - not just tutorials.

About BuyBuildSell InfraTech
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KEY RESPONSIBILITIES:
•Build agents with persistent context & memory
•Design self-learning feedback loops
•Implement RAG pipelines for domain knowledge
•Manage conversation state & orchestration
•Integrate with LLM APIs (OpenAI, Claude, open-source)
Iterate fast — ship daily, measure weekly
MUST-HAVE SKILLS
•Python / TypeScript proficiency
•LangChain, CrewAI, AutoGen or custom frameworks
•Experience with vector DBs (Pinecone, Weaviate, Qdrant)
•Prompt engineering & evaluation pipelines
•Understanding of agent architectures (ReAct, tool-use)
Git, CI/CD, containerization basics
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: Python Full Stack Developer
Onsite- Bengaluru
Experience: 3+ Years
Contract Duration: 6 Months
Notice0 less than 15 days
Employment Type : Permanent
Job Title: Software Developer - Java
Experience required: 1.6+ years
Job Location: My Home Hub, Hitech City (WFO)
Company name: Posidex Technologies
Website: http://www.posidex.com/">www.posidex.com
Job Summary
- Full stack Java Developer with working knowledge in Angular, Spring Boot and Web Services.
- Able to develop front end web applications.
Responsibilities and Duties:
- Developing front end web applications in Angular.
- Develop Webservices in SOAP and Rest.
- Develop MVC based application using Spring FrameWork
- Able to Multitask and work under tight deadlines
- Must be an effective problem solver
- Excellent communication skills.
Required Experience and Qualification:
- Qualification can be B.Tech/M.C.A
- 2+ years of experience working with Core Java, J2EE,Angular, Spring framework and Spring Boot
- Experience in creating modules ,components and integrating in Angular
- Experience in Building MVC based Web Application Using JSP/ spring framework.
- Experience in Apache Tomcat and Web Services(Rest/Soap)
- Good knowledge of OOPS concepts, Spring version 4.x, Spring Dependency Injection (IOC, MVC, JDBC, JMS, etc)
- Good knowledge of Restful services , SQL and relational databases like Oracle
- Good knowledge of XML Parsers, XML Schema, JAXB,
- Experience in Git.
Full-Stack Developer
Exp: 5+ years required
Night shift: 8 PM-5 AM/9PM-6 AM
Only Immediate Joinee Can Apply
We are seeking a mid-to-senior level Full-Stack Developer with a foundational understanding of software development, cloud services, and database management. In this role, you will contribute to both the front-end and back-end of our application. focusing on creating a seamless user experience, supported by robust and scalable cloud infrastructure.
Key Responsibilities
● Develop and maintain user-facing features using React.js and TypeScript.
● Write clean, efficient, and well-documented JavaScript/TypeScript code.
● Assist in managing and provisioning cloud infrastructure on AWS using Infrastructure as Code (IaC) principles.
● Contribute to the design, implementation, and maintenance of our databases.
● Collaborate with senior developers and product managers to deliver high-quality software.
● Troubleshoot and debug issues across the full stack.
● Participate in code reviews to maintain code quality and share knowledge.
Qualifications
● Bachelor's degree in Computer Science, a related technical field, or equivalent practical experience.
● 5+ years of professional experience in web development.
● Proficiency in JavaScript and/or TypeScript.
● Proficiency in Golang and Python.
● Hands-on experience with the React.js library for building user interfaces.
● Familiarity with Infrastructure as Code (IaC) tools and concepts (e.g.(AWS CDK, Terraform, or CloudFormation).
● Basic understanding of AWS and its core services (e.g., S3, EC2, Lambda, DynamoDB).
● Experience with database management, including relational (e.g., PostgreSQL) or NoSQL (e.g., DynamoDB, MongoDB) databases.
● Strong problem-solving skills and a willingness to learn.
● Familiarity with modern front-end build pipelines and tools like Vite and Tailwind CSS.
● Knowledge of CI/CD pipelines and automated testing.
The Full-Stack Engineer role involves working across prosuct development stack, including various backend systems, frontend systems as well as quick prototyping of proof-of-concept features and projects.
Responsibilities:
- Architecting Figuring out all levels of designing and structuring systems, deciding on optimal levels of abstraction and future-proofing, patterns of orchestration of components and finally planning its execution.
- Implementation Should be able to structure and write code like prose for others to read, design and adhere to common principles and patterns that make everyone better at their jobs. Should have the ability to contribute according to timelines and type of projects - from working POCs to stable production code and the ability to work with a large breadth of knowledge.
- Orchestration and integration Interact with the larger engineering team for integrating your work into the ecosystem, help others in building over the base that you provide, help in orchestrating your work into CI/CD, testing, QA and automation pipelines.
- Mentorship We all love to learn and grow as engineers and human beings and we believe in synchronous growth as a team fueled by each and every individual's personal abilities, specializations, and interests.
- To enable this you'll be required to mentor others by sharing your expertise in various forms and be subject to be mentored by others and thus maintain a continuous learning culture.
- Ownership End-to-end ownership of services and specialised components required for various projects - starting from prototypal stage to production-hardened. These may include anything from document parsing to solving problems using deep learning.
- Documentation Create advanced technical content including articles, samples, whitepapers, and training.
Job description - REMOTE FOR SOMETIME (TEMPORARILY) BUT GHATKOPAR IS WHERE YOU WILL WORK .
Duties & Responsibilities
- Architecting and developing backend web applications / APIs
- Backend integration with SQL/No-SQL databases, and other external services/APIs
- Integration of web application frontend and backend
- End-to-end performance and optimization of the web/mobile application
- Frontend development of UI/UX using latest technologies and best practices
- Integrating external services to frontend for various needs
- Work with QA team to ensure test coverage and execution
- Create and automate unit test cases and conduct regular code reviews
- Work with business team to ensure application meets requirements and expectations of external and internal clients
- Work effectively in Agile environment
- Provide estimates and create user stories as part of agile methodology
- Work effectively with other members of same and external teams
- Work on multiple projects at the same time if need be
Required Experience, Skills and Qualifications :
Skills Required :
- Expertise in JavaScript based frontend and backend frameworks (MERN preferred) react
- Expertise in AWS
- Expertise in developing full-stack JavaScript systems
- Experience in creating REST APIs
- Proficiency in working with Open source technologies is a plus cassandra
- Expertise in developing modern fluid web interfaces with latest technologies ui
- Experience with developing hybrid mobile apps
- Self-motivated and can work without much supervision
- Works well independently as well as in team environment
- Strong problem solving and analytical skills
- Excellent communication and interpersonal skills
- Experience working with international clients preferred
- Experience working with Git
- Experience with working on real time systems
- Experience working with SQL and non-SQL database systems
Job Type : Full-time
Experience :
Full Stack Development : 3-6 years (Preferred) 2 positions 1 requires 3 years and 1 requires above 6
Education :
- Bachelor's (Preferred)
- nodejs framewrork
- api
- deploy code
- data cloud
Location : Bangalore
- Candidate should have 3 to 5 years of Experience
- Should be strong in OOPS concepts, C#, collections, generic, reflection, multi-threading (Mandatory)
- Working experience on building desktop applications using WPF with C# .Net (Mandatory)
- Should have experience in ADO.net /Entity Framework
- Should have experience on various design patterns and .NET patterns
- Strong knowledge on RDBM concepts. Ability to Write SQL with complex joins, Stored procedures and should be able to use database functions in SQL Server/Azure SQL
- Should have experience in ASP.net (Web Forms, MVC), JavaScript, JQuery, Angular and HTML
- Knowledge on MongoDB (Not Mandatory)
- Should have knowledge on Unit Test Frameworks
- Ability to develop Rest API, Web Services
- Knowledge on Microservices (Not Mandatory)
- Experience on working on VSTO will be a huge advantage but not mandatory. But candidate should be able to work on VSTO
- Proficient in using Git as a control system
At Cypherock, We are disrupting the current financial system by increasing the adoption of Blockchain-based digital assets through better key management solutions. We build "Worlds' first products" from India, work at the intersection of Blockchain, Security, Embedded Hardware and Cryptography, and have worked with companies like Google, Blockgeeks, Samsung, Lockheed Martin, Apollo Munich, Bank of America amongst others.
As the primary person responsible for everything Blockchain in the company, we think it will be a great fit if -
- You love everything Crypto and are passionate to create the World's safest Crypto wallet.
- You have MERN stack & DevOps experience on AWS.
- You have reasonable open-source development experience and have shipped production-ready code.
- You can commit for at least 6 months and you are ideally in your 4th year of college and willing to join full time after the internship if mutually agreed.
If we decide to work together, we believe you would be a key team member who helps in the mass adoption of Crypto for the first billion users.
Job Background
We are looking for a Web Developer to join an award-winning, talented team, building the
next-generation automated drone applications for our global customers
As a front-end developer, you will implement a complete user interface in the form of a
web app. A thorough understanding of all of the components of the company’s platform and
infrastructure is required. You will need to take ownership of your projects, which involves
detailing requirements after discussion with the Product Owner, building user interfaces,
developing and maintaining web apps with a focus on user experience
Responsibilities
● Work as part of a team developing applications and services using Agile
development methods
● Contribute to team and organizational improvements in process and infrastructure
● Effectively use tools and ingenuity to identify and fix defects before they become a
problem
● Creating self-contained, reusable, and testable modules and components
● Learn about the domain and competitors to propose new drone apps as well as
improvement for existing apps
● Collaborate on projects with a closely-knit team
Skills/Experience
● 3+ yr experience as an Angular 2+ or React or Ionic Developer.
● Strong expertise with NodeJS, HTML5, CSS, JSON, jQuery, Bootstrap and writing
cross-browser compatible code.
● Knowledge of NodeJS frameworks such as ExpressJS etc.
● Knowledge of Creating RESTful services with Node.js and Experience with Socket.io
● Good understanding of HTML Dom manipulation Technique ●Experience in tested & documented TypeScript/JavaScript, HTML, and CSS
● User authentication and authorization between multiple systems, servers, and
environments
● Understanding of fundamental design principles behind a scalable application
● Proficiency working with source control (git) / versioning systems, continuous
integration in an agile development setup
Good to Have
● Understanding of how to deploy Mean stack applications in AWS/Azure deployment
environment, considering security, reliability etc.
● Knowledge of other python-based server-side frameworks such as Flask or Django











