
Fullstack Engineer - Y Combinator Travel / Airline SaaS
at Y Combinator Travel / Airline SaaS
NetSysCon is looking for a Full Stack Engineer for a travel/airline SaaS start-up. They have partnered with major airlines and entertainment brands such as Disney Theatrical Group, Qantas, Iberia, Alaska, Malaysia Airlines, Vistara, IndiGo, Volaris, and others. Their platform offers innovative tools to drive revenue, operational efficiency, and digital shopping conversion.
Job Profile
Work on all elements of the stack from data modeling and back end API's to UI implementation.
Working with airlines on integrations deep within their systems (in person, if you like!).
Assisting with key architecture, platform and infrastructure design.
Ensuring the system runs and scales smoothly, with high availability and resilience to failure.
What we use:
Python, Django, Celery
React, TypeScript
Scikit-learn, PyTorch, Tensorflow
Postgres, Redis
Kubernetes, Docker, AWS, Terraform, CDK, Github Actions
Our client is a tech company first so engineering is the largest, most important department. They care about developer ergonomics and believe investing time and effort in getting software and platform right is not-negotiable. They have:
A comprehensive automated unit test suite (frontend + backend);
Fully automated CI/CD (git push is all you need);
Fully containerized / reproducable dev environment (single-command bootstrap);
Redundant, self-healing, auto-scaling infrastructure;
Requirements
Full-stack engineering experience in at least one of the following languages/frameworks - Backend: Python/Django (preferred), Ruby/Rails, Node;
Frontend: React (preferred), Angular, Vue.
Evidence of exposure to architectural patterns of large, complex web applications (eg, well-designed APIs, asynchronous data pipelines/message queues, distributed systems).
Engineers who have experience with software best practices such as unit testing, reusable components, traceability.

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About Us
We are building the next generation of AI-powered products and platforms that redefine how businesses digitize, automate, and scale. Our flagship solutions span eCommerce, financial services, and enterprise automation, with an emerging focus on commercializing cutting-edge AI services across Grok, OpenAI, and the Azure Cloud ecosystem.
Role Overview
We are seeking a highly skilled Full-Stack Developer with a strong foundation in e-commerce product development and deep expertise in backend engineering using Python. The ideal candidate is passionate about designing scalable systems, has hands-on experience with cloud-native architectures, and is eager to drive the commercialization of AI-driven services and platforms.
Key Responsibilities
- Design, build, and scale full-stack applications with a strong emphasis on backend services (Python, Django/FastAPI/Flask).
- Lead development of eCommerce features including product catalogs, payments, order management, and personalized customer experiences.
- Integrate and operationalize AI services across Grok, OpenAI APIs, and Azure AI services to deliver intelligent workflows and user experiences.
- Build and maintain secure, scalable APIs and data pipelines for real-time analytics and automation.
- Collaborate with product, design, and AI research teams to bring experimental features into production.
- Ensure systems are cloud-ready (Azure preferred) with CI/CD, containerization (Docker/Kubernetes), and strong monitoring practices.
- Contribute to frontend development (React, Angular, or Vue) to deliver seamless, responsive, and intuitive user experiences.
- Champion best practices in coding, testing, DevOps, and Responsible AI integration.
Required Skills & Experience
- 5+ years of professional full-stack development experience.
- Proven track record in eCommerce product development (payments, cart, checkout, multi-tenant stores).
- Strong backend expertise in Python (Django, FastAPI, Flask).
- Experience with cloud services (Azure preferred; AWS/GCP is a plus).
- Hands-on with AI/ML integration using APIs like OpenAI, Grok, Azure Cognitive Services.
- Solid understanding of databases (SQL & NoSQL), caching, and API design.
- Familiarity with frontend frameworks such as React, Angular, or Vue.
- Experience with DevOps practices: GitHub/GitLab, CI/CD, Docker, Kubernetes.
- Strong problem-solving skills, adaptability, and a product-first mindset.
Nice to Have
- Knowledge of vector databases, RAG pipelines, and LLM fine-tuning.
- Experience in scalable SaaS architectures and subscription platforms.
- Familiarity with C2PA, identity security, or compliance-driven development.
What We Offer
- Opportunity to shape the commercialization of AI-driven products in fast-growing markets.
- A high-impact role with autonomy and visibility.
- Competitive compensation, equity opportunities, and growth into leadership roles.
- Collaborative environment working with seasoned entrepreneurs, AI researchers, and cloud architects.
Requirement for Python Developer
Require more than 3 years of hands-on experience with Python and associated third-party libraries.
Should have strong logical and programming skills.
Experience with Django and DRF.
Should have knowledge about MongoDB
Coordinating with the team and sharing ideas in project planning and development
Main Responsibilities of a Python Developer
· Experience with DevOps technologies and Knowledge about APIs to architect cloud-ready applications
· Strong verbal and written communication skills
· Writing effective and scalable Python codes
· Designing and implementing robust applications
· Debugging applications to ensure low latency and high-availability
· Integrating user-facing elements with server-side logic
· Implementing security and data protection
· Accommodating various data storage solutions
A full stack developer job description for MERN stack developers centers on designing, developing, and maintaining robust web applications using MongoDB, Express.js, React, and Node.js as core technologies.
Responsibilities
- Develop and maintain scalable web applications using the MERN stack.
- Build interactive and responsive user interfaces with React.
- Implement server-side APIs and business logic using Node.js and Express.js.
- Design, model, and manage databases with MongoDB to ensure efficient data storage and retrieval.
- Integrate front-end with back-end systems and third-party services.
- Optimize applications for speed and scalability, troubleshoot and debug code, and ensure reliability.
- Collaborate with other developers, designers, and stakeholders in an agile environment to clarify requirements and deliver solutions.
- Implement security best practices and protect sensitive data.
- Participate in code reviews and mentor junior developers.
Requirements
- Proven experience with the MERN stack (MongoDB, Express.js, React, Node.js).
- Strong skills in JavaScript, HTML5, and CSS3.
- Familiarity with RESTful API design, version control systems (Git), and front-end frameworks like Bootstrap or Material-UI.
- Understanding of database design, schema management, and NoSQL principles.
- Problem-solving ability and communication skills.
- Bachelor's degree in computer science or related field (preferred).
- Experience working collaboratively in a team-oriented environment.
Key Skills
- JavaScript, React.js, Node.js, Express.js, MongoDB.
- HTML/CSS, RESTful APIs, Git.
- Familiarity with agile methodologies and UI/UX best practices.
- Testing, debugging, code optimization, and deployment.
Our client is the Health-tech initiative of India's largest business house. Started in 2015, it empowers healthcare providers and consumers in India. All healthcare monitoring services are made available through an app that will help connect doctors, hospitals, pharmacies, laboratories and consumers, enabling preventive and predictive healthcare. It helps the care-givers to track the entire patient journey from the initial appointment to maintaining their records, generating lab test reports to providing virtual consultation and home-care solutions. It is expected that this futuristic guide will strengthen doctor-patient relationship and enhance the in-clinic experience.
- Understanding and improving performance of web applications through tools like Lighthouse/ Google Page Insights or similar.
- Interpreting the results and implement design improvements
- Mentoring of new members, provide directions for secure coding, and extensive code reviews to ensure the highest quality code is shipped to production.
- Configuring and managing web servers like Nginx or Apache
- Monitoring web applications using tools like AWS, CloudWatch, NewRelic APM or similar MERN stack developers, with focus on Express, React and Node
What you need to have:
- B.E/ B.Tech- Min 65 %
- Web Server Application setup for B2C with significant scale (more than 100K daily users)
- React Native based development experience
- Understanding of Mobile application development (Android and/ or iOS)
- Good understanding of Laravel framework
- Real-world experience in configuring and managing web servers like Nginx or Apache
- Good understanding of git-based SCM, Jenkins based build systems, CI/ CD pipelines, and deployment frameworks
- Sound knowledge of web application architecture
- Experience in working with stakeholders in Product Management and Business teams
- Extensive experience in building and supporting PHP or Node- based Web Server Application
- Hands-on experience in managing performance, stability, and security of node/ PHP based web applications on the server-side
Hiring Full Stack Developers at Krishivan Technologies Pvt Ltd
Job Overview:
We are urgently looking for a Full Stack Developer with 1-3 years of experience 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 around 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.
About Krishivan:
Krishivan Technologies is an AgroTech start-up that aims to partner with grassroots farmers to improve their livelihoods through smart collaboration between ‘Agriculture and Technology’. With us, farmers have exclusive access to Agri-solutions and Agri-advice at their fingertips.
We bridge the gap between farming challenges, expert knowledge, shortage of high-quality agri-in puts, sustainable financial aid, equipped machinery and infrastructure to enhance the production a nd income ability of farmers with the integration of technology from pre-harvest to post-harvest.
Roles and responsibilities:
● Participate in requirements analysis
● Building interactive consumer data from multiple systems and REST entirely abstract to the UI through a Node.js backend
● Ensure the best possible performance, quality, and responsiveness of applications
● Test-Driven Development
● Address and improve any technical issue.
● Support the implementation of developed software solutions
Requirements and skills:
● Strong understanding of object-oriented programming
● Knowledge of NodeJS, ExpressJS
● React.js/ Next.js / Node.js / Mongo DB
● Javascript, Jquery, HTML, CSS, Bootstrap
● Understanding of Agile methodologies
● Hands-on experience with JavaScript Development on both client and server-side
● Proficient understanding of code versioning tools.
Good to have:
● AWS and/or Azure Services
● Git Setup
● Experience with cloud technologies
● Familiar with various design and architectural patterns
- Atleast 5 Years of relevant experience in Serverless Microservice developerment in AWS with strong Java technologies and frameworks like Spring, Hibernate etc.,
- Atleast played the role of Lead or above for 2 years,
- Strong Javascript expertise with exprience in JS heavy (ReactJS, NodeJS, NextJS etc) application developement.
- Solid experience with AWS serverless functions.
- Experience on Java (API) suite and web frameworks.
- Expertise around extending AWS core functionalities and extensively customizing it.
- Experience with Continuous Integration and Automated test execution and building tools such as Jenkins, Hudson, Selenium or Maven,
- Experience in leading an Agile development team.
- Excellent communication skills.
- Certification in AWS as Solution Architect is preferred.
- Understanding of e-Commerce domain is good to have.
Role Description:
- Design, develop and maintain application architectures that support clients business requirements.
- Work with project managers and leadership team to ensure that all project deliverables are delivered on time with high quality.
- Work collaboratively with cross functional teams; QA, UX, etc
- Assist in deploying applications to Dev, QA, Production environments and migrations.
- Optimize application performance, scalability and security.
- Provide strong leadership skills, including the ability to facilitate team and client meetings effectively
- Independently lead the estimation effort for a project
- Lead global Agile development teams and perform code reviews.
Job Overview :
This Jr. Developer position has design, development and maintenance responsibility for the software applications and processes associated with our product oriented company. This role will initially focus specifically on the developing application as per requirements provided by the product owner.
Job Responsibilities:
- Understand our client's infrastructure and technical environment to provide best of breed technical consulting services.
- Diligently monitor, optimize and report on integration and deployment performance for key accounts against KPIs, with proactive cross functional and internal communication on customer deployments.
- Regular consultation with cross functional teams on account deployments to ensure optimal performance and delivery.
- Handle technical troubleshooting
Job Requirements:
- B.E/B.S/B.Tech in Computer Science or Computer Engineering.
- Must have minimum 2-4 years of experience in the Angular-Node-PostgreSQL tech stack. (proof of experience to be submitted for verification on request)
- Should have worked on Architect / Consultant role in the tech stack.
- Proficient in Object Oriented Programming.
- Experience in performing SQL queries on a RDMS especially in PostgreSQL.
- Extensive experience in Angular Front end and Node – Express server side.
- Good at API development & integration, debugging and fixing the issues with API.
Express Stores is an omnichannel startup (online and offline) startup by IIT Delhi, BITS Pilani grads. It is a platform for grocery stores to find trusted business solutions including supply, inventory management and customer relationship management tools. We aim to build a chain of 7/11 stores for India. Express Stores will be the go-to self enable platform for millions of Kirana stores in India to empower them with more business and empower millions of customers to find the right products, in a location nearest to their home with the best quality products, at affordable prices.
The founders have worked at UrbanClap, Jabong, Flyrobe, http://wadi.com/" target="_blank">Wadi.com in India, Dubai and South East Asian Markets. You can read more about the founders at: Apoorv Jain, Kartik Gupta. We are a young, passionate team working on a tough but huge opportunity in India. We believe there is immense value (akin to serendipity) in giving customers the same value of Supermarkets in their neighborhood stores by making them larger, better, cleaner and cheaper. We are backed by some of the best investors in this country, who share this vision with us.
We’re hiring our first Full Stack developer who will play a key role in defining the foundation of our product stack. We are looking for rockstars who not only code but can understand the products they are developing and how they impact all the stakeholders.
We see our developers as product designers so a full-stack experience and motivation is necessary.
Roles and responsibilities
First 2 months
You will be expected to setup and integrate basic tools which will allow the internal teams to function. Examples of projects would be
-Execution of WMS, POS systems and any required integrations
-Setup basic data warehousing / reporting servers to promote data democracy internally.
Post 2 months
You will now be working on creating new tools / Apps which will give our business compounding benefits over time. These could range from B2B, B2C, B2B2C apps, internal enterprise tools. This phase will lay the true foundation of the company’s future tech capabilities.
Location: Gurgaon
Compensation and perks
-Market competitive salary + equity, based on fit and profile
-Opportunity to shape the strategic direction of the company
-Making a difference: Impact the lives of our customers and the hundreds of thousands of Kirana partners we will partner with
-We have access to an amazing list of tech mentors and advisors










