Software Development Engineer Intern

Key Responsibilities

Develop and maintain scalable applications using MongoDB, MySQL/PostgreSQL, Node.js, Express.js, React.js, and TypeScript.

Design, develop, and optimize RESTful APIs and GraphQL services.

Lead and mentor a team of developers, ensuring best coding practices, performance, and security.

Collaborate with UI/UX designers, product managers, and DevOps teams to streamline development.

Contribute to AI-powered application development (if experienced in AI/ML).

Required Skills & Qualifications

✅ 2.5+ years of experience in MERN stack development.

✅ Expertise in React.js, TypeScript, Node.js, and Express.js.

✅ Strong database management skills with MongoDB, MySQL, or PostgreSQL.

✅ Proven experience in leading development teams and conducting code reviews.

✅ Excellent problem-solving and communication skills.

✅ Bonus: Experience in AI/ML-based applications is a plus.

Why Join Us?

🚀 Exciting Projects – Work on AI-driven and scalable web solutions.

🤝 Leadership Opportunity – Lead and mentor a talented team of developers.

💰 Competitive Compensation – ₹40K - ₹60K per month.

🏡 Dynamic Work Environment – Collaborative, innovation-driven workplace.

Job Title: Full Stack Developer - SDE 2

Responsibilities

• Lead design and delivery of complex end-to-end features across frontend, backend, and data layers.
• Make strategic architectural decisions on frameworks, datastores, and performance patterns.
• Review and approve pull requests, enforcing clean-code guidelines, SOLID principles, and design patterns.
• Build and maintain shared UI component libraries and backend service frameworks for team reuse.
• Identify and eliminate performance bottlenecks in both browser rendering and server throughput.
• Instrument services with metrics and logging, driving SLIs, SLAs, and observability.
• Define and enforce comprehensive testing strategies: unit, integration, and end-to-end.
• Own CI/CD pipelines, automating builds, deployments, and rollback procedures.
• Ensure OWASP Top-10 mitigations, WCAG accessibility, and SEO best practices.
• Partner with Product, UX, and Ops to translate business objectives into technical roadmaps.
• Facilitate sprint planning, estimation, and retrospectives for predictable deliveries.
• Mentor and guide SDE-1s and interns; participate in hiring.

Qualifications & Skills

• 3–5 years building production Full stack applications end-to-end with measurable impact.
• Proven leadership in Agile/Scrum environments with a passion for continuous learning.
• Deep expertise in React (or Angular/Vue) with TypeScript and modern CSS methodologies.
• Proficient in Node.js (Express/NestJS) or Python (Django/Flask/FastAPI) or Java (Spring Boot).
• Expert in designing RESTful and GraphQL APIs and scalable database schemas.
• Knowledge of MySQL/PostgreSQL indexing, NoSQL (ElasticSearch/DynamoDB), and caching (Redis).
• Knowledge of Containerization (Docker) and commonly used AWS services such as lambda, ec2, s3, apigateway etc.
• Skilled in unit/integration (Jest, pytest) and E2E testing (Cypress, Playwright).
• Frontend profiling (Lighthouse) and backend tracing for performance tuning.
• Secure coding: OAuth2/JWT, XSS/CSRF protection, and familiarity with compliance regimes.
• Strong communicator able to convey technical trade-offs to non-technical stakeholders.
• Experience in reviewing pull requests and providing constructive feedback to the team.

Qualities we'd love to find in you:

• The attitude to always strive for the best outcomes and an enthusiasm to deliver high quality software
• Strong collaboration abilities and a flexible & friendly approach to working with teams
• Strong determination with a constant eye on solutions
• Creative ideas with problem solving mind-set
• Be open to receiving objective criticism and improving upon it
• Eagerness to learn and zeal to grow
• Strong communication skills is a huge plus

Work Location: Hyderabad

Remote position

Full-stack developer | .NET Core + Angular

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
• 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

• 5+ years experience in C#
• Experience with .NET core
• Front-end web experience in Angular and CSS
• Track record of building great products
• You’ll love the idea of being a big part of a small team. Current team size is 5.
• 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.

• Work with development teams and product managers to create software solutions.
• Design client-side and server-side architecture.
• Build the front-end of applications.
• Develop and manage well-functioning databases and applications.
• Write effective APIs.
• 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.
• Work with data scientists and analysts to improve the software.

Qualifications:

Degree in Computer Science, Software Engineering or relevant field.
Experience with Java, Spring, and Restful API's.
Experience with Database development (MySQL, Postgres, etc).

Proven experience as a Full Stack Developer or similar role. Knowledge of multiple front-end languages and libraries (e.g. HTML/ CSS, JavaScript, jQuery).
Knowledge of multiple back-end languages (e.g. Java, Python) and JavaScript frameworks (e.g. Angular, React, Node.js).
Familiarity with databases (e.g. MySQL, MongoDB), web servers (e.g. Apache), and UI/UX design.
Experience with AWS or other cloud environments

Responsibilities:

• Engage directly with customers to design, develop, and deploy AI enterprise applications on the 
• Become an expert in application design and development on the ; lead design and code reviews of end-to-end customer applications
• Perform enhancement, testing, and troubleshooting, of applications with and on behalf of customers
• Continuously identify technical risks and gaps; devise mitigation strategies in anticipation of customer needs
• Write specifications, documentation, and user guides for customer applications

 Required Qualifications:

• Bachelor’s degree in a Science, Technology, Engineering or Math (STEM) field
• 3+ years professional experience in a customer-facing role building enterprise cloud software applications
• Solid understanding of cloud computing concepts
• Solid understanding of databases types and trade-offs
• Demonstrated proficiency in Java and/or similar programming languages
• Working knowledge of Agile software development methodology
• Strong analytical ability and problem-solving techniques
• Strong organizational skills with high attention to detail
• Excellent interpersonal skills with the ability to work effectively in a cross-functional team

 Preferred Qualifications:

• Bachelor’s degree in Computer Science or equivalent field; graduate degree in complimentary STEM or Business field
• Experience building and deploying AI-based enterprise applications
• Solid understanding of common machine learning techniques, applications, and trade-offs
• Demonstrated proficiency in javascript and/or similar programming language
• Domain expertise in one or more of the following industries: Aerospace, Financial Services, Healthcare, Industrial Manufacturing, Oil & Gas, Public Sector, Power & Utilities, Supply Chain, Telecommunications
• Proficiency in time series analysis, data cleansing, and data normalization

Roles and Responsibilities

• Strong proficiency in Java and building scalable enterprise applications
• Can think of architectural design at scale
• Love solving complex and challenging problems
• Have good knowledge of design and architectural patterns
• Thrive to implement Industry’s best practices and coding standards
• High obsession for Quality and Performance
• Good knowledge on performance optimization, SQL tuning, caching techniques
• Like to collaborate with people, share knowledge, learn from others and mentor juniors

• Work on world-class solutions to deliver industry's leading Cloud operations management
• Develop system architecture, design and build platform services for scalable, resilient, multi-tenant Cloud SaaS. Examples of work include:
• Writing microservices based distributed applications
• Designing REST APIs for backend services
• Develop user-interface for our SaaS
• Handle cross-cutting microservices concerns such as externalizing configuration, logging, health checks, metrics, distributed tracing
• Work with customers, partners, and business leaders to architect solutions for Cloud Operations

• Has significant (3+ years) experience developing and deploying Cloud services for a large scale software projects on public clouds (AWS, GCP, Azure)
• Has hands-on experience building multi-tenant SaaS solutions on public clouds (AWS)
• Strong experience with React, NodeJS, Java, GO, Python
• Has expertise with microservices, infrastructure as code (IaC), continuous integration/delivery (CI/CD), etc.
• Has experience working with containerization, cluster orchestration, or infrastructure management frameworks (such as Kubernetes, Docker, Terraform)
• Basic knowledge of AWS security (IAM, Cognito)
• Knowledge of good engineering practices and agile culture
• Takes initiative in a fast-paced environment
• 100% hands-on and loves to code

• Experience with Prometheus, Grafana, ELK, Jaeger, etc.
• AWS certification
• Experience with machine-learning (ML), MLOps
• Experience with Apache Flink, Spark, Hadoop, or other
• Experience working remotely in a distributed team
• Startup experience

As a full stack engineer, you will build new features for our internal tools, including https://medium.com/@Smartcow_ai/tlt-lightning-ff47659f7804">lightning. Architect, develop, test, and deliver independently.

Responsibilities

• Design, test, build and deploy web applications for internal and external use
• Design and implement scalable APIs and backend services
• Convert high-level requirements into detailed, usable and intuitive UI
• Involved in the execution of project from design stage

Skills: 

• 3+ years full-stack python developer with exposure to web frameworks like Django or Flask
• Experience building APIs for rapidly iterating product and restful APIs and development of service layer using python's flask framework
• Proficient in writing unit test cases using Pytest package
• Proficient on Reactjs, Angular, & VueJs (GTH),
• Knowledge of DB and API schema designing
• Knowledge with OpenCV and ML workflow is added advantage
• HTML/CSS/JavaScript and JavaScript framework
• Database level programming using both SQL (MySQL, PostgreSQL) and No SQL (MongoDB/Casandra) and designing the database level stored procedures and persistence logic.
• Knowledge with Nvidia libraries is an added advantage
• Experience working with Web Application development, docker, Unix/Linux environments
• Understanding of machine learning, information retrieval, neural networks, networking, developing large software systems (stands out from crowd)

JavaScript, jQuery, Angular or node, HTML, CSS, API consumption, DB knowledge, building responsive web apps.