.Net Fullstack Developer

Role & Responsibilities

• Design, develop, and maintain scalable full stack applications using modern backend and frontend technologies.
• Build and maintain backend services and APIs using technologies such as C#, .NET, Java, or similar backend frameworks.
• Develop responsive and efficient frontend applications using Angular (14+), TypeScript, and JavaScript or similar frontend framework.
• Work on applications deployed in on-premise infrastructure environments, ensuring stability and performance.
• Implement and optimize search capabilities using OpenSearch.
• Design and maintain database structures using relational databases (SQL) and NoSQL databases such as MongoDB.
• Collaborate with cross-functional teams to design, implement, test, and deploy new product features.
• Troubleshoot issues, debug applications, and ensure high reliability and performance of the platform.
• Participate in Agile/Scrum development processes, collaborating closely with team members throughout the development lifecycle.
• Contribute to technical discussions, architecture decisions, and engineering best practices.

Ideal Candidate

• Strong Full stack software engineer having on premise applications development experience
• Mandatory (Experience 1): Must have 5+ years of experience as a Fullstack developer
• Mandatory (Experience 2): Must have hands-on experience in developing and supporting applications deployed on on-premise infrastructure (Not cloud)
• Mandatory (Backend): Must have strong backend development experience using technologies such as C#, .NET, Java, or similar backend frameworks
• Mandatory (Frontend): Must have strong frontend development experience using technologies such as React, Angular, TypeScript, JavaScript or similar frontend frameworks
• Mandatory (Core Skill): Must have exposure to OpenSearch
• Mandatory (DB): Exposure to SQL (Relational DBs) & NoSQL databases like MongoDB
• Mandatory (Company): B2B SaaS companies
• Mandatory (Note 1): This is a hybrid role in Udyog Vihar, Gurgaon
• Mandatory (Note 2): Role will convert into core team member, so need strong intent candidate
• Preferred (Skill): Experience leading technical design discussions, mentoring engineers, and setting engineering standards or architectural guidelines

Job Summary

We are looking for a skilled ASP.NET Developer with experience in C#, ASP.NET MVC, Web API, SQL Server, and travel technologies. The candidate will develop, maintain, and enhance travel booking applications, integrate third-party APIs, and deliver secure, high-performance solutions.

Key Responsibilities

Develop web applications using ASP.NET MVC, C#, and .NET Framework/.NET.

Design and develop RESTful Web APIs.

Build responsive, scalable, and secure applications.

Write optimized SQL Server queries, stored procedures, functions, triggers, and views.

Integrate travel APIs such as Amadeus, Sabre, Travelport, TBO, or other GDS/XML/JSON APIs.

Develop flight, hotel, holiday package, and booking modules.

Implement authentication, authorization, and security best practices.

Debug, troubleshoot, and optimize application performance.

Collaborate with UI/UX designers, QA, and business teams.

Participate in code reviews and follow coding standards.

Prepare technical documentation.

Required Skills

Strong knowledge of C#

ASP.NET MVC

ASP.NET Web API (REST)

SQL Server

Entity Framework / ADO.NET

LINQ

HTML5, CSS3, JavaScript

jQuery

AJAX

JSON, XML

IIS Deployment

Git or Azure DevOps

Responsibilities

• Enhance and maintain our main web application, ASCLOGS, built on ASP.NET MVC

(.NET Framework 4.8) with features such as authentication, PDF generation via

IronPdf, audit logging with log4net, Twilio SMS integration, and data access through

PetaPoco.

• Support multiple companion projects including:

• CopyForm, an MVC tool that copies form templates between SQL Server

databases using AJAX and PetaPoco data access.

• SQLImportApp, a WinForms importer leveraging ExcelDataReader and

Z.Dapper.Plus for bulk inserts.

• DEAVerification, a WinForms app automating data retrieval via Selenium

WebDriver and storing results with PetaPoco.

• UniversalScrapperAPI, an ASP.NET Web API that scrapes licensing

information using Selenium and logs results with log4net.

• HL7DocAssistantSync, a VB.NET library for HL7 message processing and

PDF generation with PdfSharp.

• ChatGPT Implementation, a .NET 8 Web API example showing how we

integrate with OpenAI's ChatGPT service.

• S3MicroService, a .NET 8 Web API using AWS SDK packages

(AWSSDK.S3, AWSSDK.Extensions.NETCore.Setup) and Entity Framework

Core for storage.

• Maintain PowerShell utilities used for onboarding tasks such as document-to-PDF

conversion and CSV generation.

• Review existing code to improve reliability, enhance testability, and refactor large

code files (for example, BusinessLayer/BusinessLayer.cs is roughly 28k lines).

• Work closely with stakeholders to gather requirements for new features and ensure

compatibility with our SQL Server backend.

• Assist in modernizing legacy components and implementing best practices for

security, error handling, logging, and deployment automation.

Required Skills

• 10+ years of development experience

• Extensive experience with C# and the .NET ecosystem, including both legacy .NET

Framework and modern .NET Core / .NET 8.

• Solid understanding of ASP.NET MVC, Web API, and Windows Forms development.

• Familiarity with PetaPoco, Entity Framework Core, and SQL Server.

• Experience integrating third-party services such as Twilio, OpenAI, Selenium

WebDriver.

• Ability to write and troubleshoot PowerShell scripts for automation tasks.

• Comfortable navigating large codebases and improving code quality through

refactoring, unit testing, and documentation.

• Proficiency with version control (Git) and the Visual Studio toolchain.

Preferred Skills

• Background in healthcare or regulated industries, since many applications manage

sensitive data (e.g., DEA verification, HL7 messaging).

• Knowledge of PDF generation libraries (IronPdf, PdfSharp) and logging frameworks

(log4net).

• Experience with CI/CD pipelines for .NET applications.

• Nice to have Unit Testing frameworks (i.e. NUnit, MS Testing Framework )

Location & Work Environment

This role requires working with Visual Studio on Windows for the .NET Framework solutions

and .NET 8 projects. Experience with IIS or IIS Express is helpful for local development and

testing.

Title: Technical Lead, CAST AI center

Location: Bangalore

Reports to: Director, Professional Services

The Person:  The successful candidate will be an intelligent, highly energetic self-starter with excellent communication, technical skills with a very solid technical background in the application development world. Experience of working in Application Modernization / DevOps / Cloud readiness assessments / Flaw Interception & Security projects is mandatory. Prior experience in working with any professional services teams would be a big plus. And you know, love and understand complex technologies, and always seek out engaging technical discussions and has the appetite to work in a fast-paced consulting environment.

Role & Responsibilities: As a lead, you will help address various customer’s problems  - Identifying the applications which can be transformed to cloud, identifying the security vulnerabilities to reduce the business risk, assist Customer modernize their applications by providing MRI like visibility of the software in assessing the complexity, functionality etc, identifying the productivity of the vendor teams to help optimize the efficient use of budget, identifying regulatory requirements like storage of personal data in the applications and help business to be compliant and various other use cases.

Role combines a thorough understanding of the product and recommending the CAST solutions.

• Lead project teams in all technical aspects of project execution, by giving guidance to consultants and project stakeholders, by delivering advanced technical configuration of CAST products
• Should able to analyze an enterprise application using AIP platform of all the phases in the product life cycle
• Work in complete autonomy to deliver project deliverables, for advanced technical deliverables, with required level of quality
• Understand and interpret the various CAST metrics to customers in solving specific use case of CAST customers
• Must have troubleshooting skills
• Able to proactively identify risks related to application /deliverables and propose a mitigation plan
• Capable to execute Pilots and Assessments
• Take responsibility for analyzing a customer application using the CAST product to provide end to end process including the customer process and communication
• Provide custom solutions to customer requirements
• In synchronization with Project Manager, detect potential risks and issues, engage and track remediation plans. Contribute proactively to designing remediation plan for Senior level.
• Contribute to improvement of internal process, tooling and quality process
• Design, build and collect technical materials as part of project executions in a spirit of reusability for future engagements and maintain knowledge on best practices, tools and reusable components for CAST analysis

Experience of the AD world, excellent problem solving & solution-oriented skills, communication skills and a very strong drive are key characteristics for success.

Qualifications:

• Bachelor’s Degree (or equivalent) in a technical discipline; a master’s degree would be a plus
• Effective communication skills in English is mandatory for non-native English speakers (oral and written)
• Minimum 8+ years of technical consultancy experience software development / software implementation in the software industry
• Strong technical expertise and experience in either J2EE or .NET and one of the common databases such as Oracle, DB2 or SQL Server
• Excellent communication skills (oral and written) including an ability to communicate effectively at senior levels within client organizations
• Strong knowledge of the AD ‘world’ is mandatory
• Ability to work independently toward stated business goals

• Proficiency with C# .Net . Experience in ASP.NET MVC, .Net Core, API Development
• Have knowledge around various frameworks in .Net ecosystem (.Net framework , .Net core)
• Actively participate in system design, code reviews, and implementation of new features.
• Take complete ownership of tasks, which includes design , implementation, unit testing and deployment of product and service.
• Hands on experience with Microsoft SQL , writing/ optimising complex queries, writing stored procedures , basic understanding of database performance tuning.
• Develop documentation throughout the software development life cycle. . Good problem solving skills, Excellent debugging and troubleshooting skills.
• Experience working in version controlling tools.

Job Sector: IT, Software

Job Type: Permanent

Location: Chennai

Experience: 10 - 20 Years

Salary: 15 - 35 LPA

Education: Any Graduate

Notice Period: Immediate

Key Skills: ReactJS, NodeJS, Angular

Contact at triple eight two zero nine four two double seven

Job Description:

Requirements

As the expectation from the candidate would be to develop, architect and work with different stakeholders in the organization, most of the skillset mentioned below is a must have.

• Overall 10+ years of experience in the IT industry.
• Full Stack Senior Developer/Architect with extensive knowledge in, at least 2 programming language such as JavaScript, C#, Java, Python, Go etc.
• Experience in any one of the Frontend JavaScript frameworks; ReactJS, Angular, VueJS.
• Experience in building and managing scalable high availability RESTful services using frameworks like NodeJS, .NET Core etc.
• Experience in RDBMS and NoSQL database technologies like SQL Server, MongoDB, DynamoDB etc.
• Extensive experience in web fundamentals like HTML 5 and CSS 3.
• Should have understanding of Containerisation with Kubernetes or Docker.
• Familiar with Test Driven Development and CI/CD pipelines (GitLab, Jenkins).
• Experience in different AWS Cloud Services like ECS, EKS, S3, EC2 etc is good to have.
• Working knowledge of source code repository Git.
• Understanding of how to build performant, decoupled, testable, maintainable code.
• Ability to understand business requirements and translate them into technical requirements.

Good written and verbal communication skills.

• Minimum 3 years of frontend development experience using React JS.
• Minimum 3 years of backend development experience using Node JS or .NET Core .

- Work with development teams and UI/UX designers 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.

- 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.

- Excellent verbal communication skills.

- Good problem-solving and logical skills.

Desired Profile:

Experience with web technologies including HTML, CSS, JS, AJAX, Bootstrap, Jquery etc.

- Experience in Web Application Development using PHP/MySQL.

- Knowledge of object-oriented PHP programming.

- Understanding of MySQL databases and their declarative query languages.

-  Responsible for handling a projects using MVC framework CodeIgniter/Laravel.

- Design interchange of data between the server and the client using RESTful/GraphQL.
- Understanding accessibility and security compliance.

- Build efficient, testable & reusable PHP modules in latest version.

- Should have basic knowledge in Scrum and Git.

Full-stack developer  - Remote position

Are you...

• Interested in working at a successful, well-funded start-up where every team member can make a huge contribution?
• Keen to make software that people will use every single day to make their lives easier?
• Excited to work on greenfield projects with responsibility and independence?
• Ready to develop and use your skills across our frontend, backend and mobile offerings?
• Meticulous about quality, and gifted with a strong desire to write beautiful code?

About the company

KeyNest solves the key exchange problem for Airbnb users. Our worldwide network of over 4,000 shops store keys so that Airbnb guests / cleaners / contractors can pick them up whenever is convenient for them. As a global partner of Airbnb we’ve checked-in over 2 million guests.

Why we need you

As the entire Airbnb ecosystem increasingly relies on KeyNest, our customers expect us to integrate additional features without reducing the ease of use that our customers love. This is why we continue to invest in beautiful, intuitive user interfaces that integrate with every tool and are used by our customers, their guests and staff, as well as our own staff.

Our product team is lead by one of the founders and complete with a director of engineering, product manager, UX designer, one mobile developer and one senior full-stack developer who will be mentoring you. We want to work with a developer who cares about the way their code impacts the people who use it.

With a genuine passion for high quality work, attention to detail and readiness to own your own projects, you will be looking for a new and exciting challenge which allows you to use your experience to drive change and maintain the high standards of our organisation.

Our Tech Stack

• C# MVC modern tech stack
• Front end web in TypeScript & Angular or Node & React
• Test Driven Development (TDD) and follow SOLID design principles.
• EF 6.0
• SQL Server 2017
• Agile experience (Scrum, Kanban)
• TFS
• Cloud hosted in Azure with micro-services architecture

Your qualities

• 2-4 years experience in C#
• Front-end web experience in Angular
• Track record of building great products
• Excited about understanding the real problems working people come up against and fixing them with technology
• You’ll love the idea of being a big part of a small team: if you come up with a great idea, you can take it all the way to production
• Motivation and ambition to succeed in a fast-paced environment
• Not afraid to take on responsibilities

What we offer

• Crucial role in a funded, dynamic & fast-growing start-up shaking up the sharing economy
• Competitive salary based on relevant experience
• Flexible working for our most committed staff
• Unparalleled opportunities to develop your career as the company develops rapidly

If you want to join the KeyNest team, please get in touch – we look forward to meeting you.

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

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

You should have

• Degree in Computer Science or relevant field
• Strong knowledge and understanding of JavaScript and TypeScript
• Knowledge of multiple frontend languages and frameworks including HTML, CSS, SCSS, JavaScript and React.
• Knowledge of backend languages and frameworks primarily Node.js
• Familiarity with SQL databases (e.g. PostgreSQL)
• Knowledge of Docker, Kubernetes would be a plus.
• Leadership skills for guiding and mentoring team mates.
• Understanding of CI/CD Concepts
• Awareness of key concepts in DevOps and Agile principles

Perks

• Flexible working hours - employee tracking is never a thing
• A fun and close-knit agile team.
• Open office layout that promotes collaboration, conversation, and camaraderie – the result-oriented team.
• Recreational activities to keep you away from the screen and live, laugh, enjoy with the team.