Fullstack Developer (0-3 years)

Job Title : Full Stack .NET Developer (Blazor / WPF / Web API / Device Integration)

Location :Bangalore

Experience : 3–6 Years

Employment Type : Full-Time

Job Summary

We are looking for a skilled Full Stack .NET Developer with strong expertise in .NET Core, Web API, Blazor, and WPF, along with hands-on experience in device and hardware integration. The ideal candidate will work on web and desktop applications that integrate with peripherals such as cash acceptors, payment devices, printers, and other kiosk hardware, delivering secure, high-performance, and reliable solutions.

Key Responsibilities

• Design, develop, test, and maintain applications using C#, .NET Core, and ASP.NET Core Web API
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• Develop modern web applications using Blazor (Server and/or WebAssembly)
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• Build and maintain WPF desktop applications using MVVM architecture
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• Design, develop, and consume RESTful APIs for web, desktop, and device-based applications
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• Integrate and manage hardware devices such as cash acceptors, payment terminals, printers, scanners, and other peripherals
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• Work with device SDKs, drivers, COM/USB/Serial (RS232) communication, and third-party APIs
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• Handle device error states, retries, logging, and recovery mechanisms
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• Develop and optimize database objects using MS SQL Server
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• Ensure application performance, security, and scalability, especially in hardware-dependent environments
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• Debug, troubleshoot, and resolve application and device-related issues
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• Collaborate with cross-functional teams to translate business and hardware requirements into technical solutions
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• Participate in code reviews and follow best coding standards and practices
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Technical Must-Have Skills

• Strong proficiency in C# and .NET Core
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• Hands-on experience with ASP.NET Core Web API
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• Strong experience with Blazor (Server and/or WebAssembly)
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• Experience developing WPF desktop applications
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• Solid understanding of MVVM and MVC architecture
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• Experience with device/hardware integration, including:
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• Cash acceptors / bill validators
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• Payment devices (POS, card readers, UPI, NFC)
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• Printers (thermal, receipt, barcode)
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• Knowledge of Serial/USB/TCP-IP communication protocols
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• Strong knowledge of MS SQL Server
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• Experience with RESTful API design and integration
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• Familiarity with Git or other version control systems
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Good-to-Have Skills

• Experience with Entity Framework / EF Core
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• Understanding of Microservices architecture
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• Experience working on kiosk-based or embedded systems
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Soft Skills

• Strong problem-solving and analytical skills
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• Good communication and teamwork abilities
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• Ability to work independently with minimal supervision
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• Attention to detail and commitment to quality
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Educational Qualification

• Bachelor’s degree in Computer Science, Engineering, or a related technical field
• (Equivalent hands-on experience in .NET Core, Blazor, WPF, Web API, and device integration will also be considered)

Job Description:

Responsible for designing, developing, and maintaining full-fledged software platforms that can function independently without relying on third-party applications. Work on both the front-end and back-end development processes, using a range of technologies and languages such as Java, Springboot, microservices, cloud with Angular or react.

Essential functions:

• Strategic Architectural Design Lead the design and development of complex, enterprise-level software systems.
• Evaluate emerging technologies and recommend optimal architectural patterns.
• Ensure software solutions align with business requirements and long-term goals.
• Technical Leadership Mentor and guide junior developers on best practices and coding standards.
• Collaborate with cross-functional teams to coordinate development efforts.
• Make data-driven decisions to optimize system performance and scalability.
• FullStack Development Hands-on coding and implementation of front-end, back-end, and database components.
• Develop robust APIs, microservices, and cloud-native applications.
• Implement security measures and ensure compliance with industry standards.
• Continuous Improvement Identify opportunities to refactor and modernize existing systems.
• Automate deployment pipelines and streamline DevOps processes.
• Conduct code reviews and provide constructive feedback to the team.
• Knowledge Sharing Document technical specifications, design patterns, and implementation details.
• Conduct training sessions and workshops to upskill the development team.
• Stay-up-dated on the latest Java ecosystem and share industry insights.

Qualifications/ Experience & Skills:

• Computer engineering/ Computer Science OR equivalent degree.
• 10-15 Years of total experience.
• As an experienced Full Stack Architect, individuals would be responsible for driving the technical vision, leading the development team, and ensuring the delivery of high-quality, scalable software solutions that meet business objectives.
• Notice period: immediate - 30 days would be preferred.

Would be a plus :

• Experience in Enterprise architecture

Job Summary:

We are looking for a skilled and detail-oriented C# Developer to join our team. The ideal candidate will be responsible for building and maintaining efficient, reusable, and reliable C# code. You will work closely with cross-functional teams to design and develop applications that meet business needs.

Key Responsibilities:

• Design, develop, test, and maintain applications using C# and the .NET framework.
• Collaborate with product managers, designers, and other developers to define software requirements.
• Write clean, scalable, and well-documented code.
• Develop and maintain APIs and backend services.
• Troubleshoot and debug existing applications.
• Participate in code reviews and contribute to best practices.
• Stay up-to-date with industry trends and emerging technologies.

Required Qualifications:

• Bachelor’s degree in Computer Science, Engineering, or a related field.
• Proven experience as a C# developer or in a similar role.
• Strong proficiency in C#, .NET (Framework/Core), and object-oriented programming.
• Experience with ASP.NET MVC/Web API, Entity Framework, LINQ.
• Familiarity with front-end technologies such as HTML, CSS, JavaScript is a plus.
• Experience working with SQL Server or other relational databases.
• Familiarity with version control systems such as Git.
• Strong problem-solving and analytical skills.
• Good communication and teamwork abilities.

Preferred Qualifications:

• Experience with cloud platforms (e.g., Azure or AWS).
• Knowledge of software development methodologies like Agile or Scrum.
• Familiarity with CI/CD pipelines and DevOps practices.
• Experience with microservices architecture.

Full-stack developer - Remote position

Are you...

• Interested in working at a successful, well-funded scale-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.

A product manager, a team lead, two full-stack developers, one mobile developer, and a UX designer make up our product team. Who will serve as your mentor. We are looking for a developer who cares about how their code affects users so that we can work together.

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
• .Net Core experience
• Front end web in TypeScript & Angular
• 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

• 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 scale-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.

• 4 to 7 years of experience (or equivalent understanding of software engineering)
• Strong in Javascript & Typescript + frameworks like React, Next.js, Angular, etc.
• Strong experience in architecting complex, distributed systems in public or private cloud
• Willingness and interest in learning new tech/processes (Python, Airflow, Postgres, etc.)
• Willingness to travel to offices in New York City, San Francisco, and Hyderabad

Full Time @ Anywhere in India

3+ years

• Taking an active role in architecting the solutions we build
• Designing and implementing web applications using JavaScript and its frameworks (i.a. React, Vue, Angular), HTML5 and CSS3
• Working closely with the dispersed development team, client, and project manager in SCRUM methodology
• Ensuring that programming practices and code quality are respected
• Supporting other engineers with your expertise when needed (knowledge sharing)
• Leading your colleagues’ growth and development

• 2+ years of experience with JavaScript (good knowledge of ES2016; newer versions and TS 3+ are a plus)
• Experience in developing web applications using Angular2+ and another modern framework
• Being comfortable HTML5 and CSS3
• Experience with version control systems, preferably Git
• Demonstrated tech leadership in a medium-sized team, and the ability to design a really complex system
• Eagerness to learn and constantly improve yourself
• Being a team player focused on getting things done

• Experience with React.js and Node
• Experience with AWS or GCP infrastructure
• Curiosity about new languages, libraries, frameworks
• Contributions to open-source projects

• Passionate about making an impact
• Self-driven & eager to learn new technologies
• Intellectually curious, interested to build complex systems
• Thrive in a highly independent, remote-first environment
• Keen to work with a globally diverse team

• Hybrid Work Option - Step out when you “want to” not when you “have to”
• Work from the comfort of your home or work at the office
• Support for setting up Home-office
• Flexible Work Hours -Work-life balance becomes a lot easier to maintain with the flexibility to plan your work hours 
• Flexible Leave policies
• Life needs a break - casual, parental, sick, or just random. To help you enjoy your leaves without guilt or excuses, we have a ‘no approval needed’ policy
• Health and Wellness - Constant encouragement to stay fit
• We encourage and support our team members to participate in memberships that promote team member health (physical, emotional, and psychological) and fitness
• Reimbursements for medical support
• Career ladder: the freedom to design your own path
• Well defined career ladders to grow, assess and explore your professional journey
• Learning opportunities
• In house learning platforms to partner with you in your growth story
• Wide range of courses and certifications

Requirements:

- Knowledge of digital ad tech ecosystem

- Minimum 3 years of experience working in a professional environment on full-stack development

- Proven expertise in creating and developing scalable enterprise or B2C web applications

- Experience in REST API development and MVC/MVVM development methodologies

- Deep understanding of the underlying architecture of web servers, load balancing, and browser nuances. Basically, a solid understanding of fundamentals - including execution models, asynchronous programming, object-oriented concepts, relational concepts, etc.

- Proficiency in one or more of Node.js/MEAN stack, Python, Java or other frameworks and willing to be flexible on stack as per the requirement of the project. Most of our current development is on the MEAN stack - expertise in the stack will be a definite plus

- Proficiency in one or more of databases such as MySQL, MongoDB, Cassandra or other equivalent databases and willing to be flexible as per the requirement of the project. Most of our current development is on MongoDB and MySQL - expertise in these will be a definite plus

- Good understanding of developer tools and devops such as Git, Ansible, cloud platforms such as AWS, Docker, etc.