Senior Fullstack Developer

When life gives you lemons, we turn them into seamless digital experiences.

Lemon Yellow LLP is looking for a Full Stack Developer Intern, someone who’s passionate about building, learning, and experimenting with code. You’ll collaborate with our developers and designers to turn ideas into real, functional web applications using the MERN stack. If you're eager to dive into the full development lifecycle and ship things that matter, this internship is for you.

Core Responsibilities

• Assist in building end-to-end web applications using MERN (MongoDB, Express.js, React.js, and Node.js)
• Transform UI/UX designs into responsive, accessible front-end components
• Write and test basic REST API endpoints
• Support feature development and contribute to bug fixes
• Document code and follow standard Git workflows
• Observe and learn from code reviews, deployment flows, and team development practices

API & Integration Exposure

• Gain exposure to API integrations and backend data handling
• Assist in connecting third-party tools and services
• Understand user authentication basics like JWT or OAuth

Code Quality & Testing

• Write simple unit tests to validate functionality
• Learn to debug and support in identifying issues and improving performance

Agile Collaboration

• Participate in daily stand-ups, sprint planning, and retrospectives
• Contribute to a collaborative development process through feedback and iteration
• Understand real-world agile workflows and team dynamics

Learning & Growth

• Stay curious and up to date with current trends in web development
• Attend team learning sessions and tech discussions
• Learn under the mentorship of experienced developers

What We Need From You

• Graduate in Computer Science, Software Engineering or a related field
• Basic understanding of JavaScript (ES6+), HTML5, and CSS3
• Exposure to at least one of the MERN technologies through coursework, side projects, or self-study
• Basic knowledge of Git and version control workflows
• Eagerness to learn, take feedback, and build real features
• A portfolio, GitHub profile, or personal projects is a plus

What are we offering?

Experience

• A chance for you to work in a thriving and growing environment. We foster a culture where growth is harmonious and creativity is always appreciated - you grow and you encourage others to do the same.

Exposure

• If you believe in your work, we believe in you. If you think your designs have the power to change the world, we'll help you bring your vision to life and give you the platform to prove it.

Empathy

• We have a carefully curated culture that promotes 2 things: fun & fulfilment. Your welfare - personal, professional, mental, and physical - becomes our responsibility. From Fitness Thursdays to learning sessions, we try to make you laugh & learn.

Who are we?

Lemon Yellow LLP is a user-centered UI/UX design agency, based out of Thane, Maharashtra. With international operations, an experienced mentorship, and a passionate team, we aim to design digital happiness.

You should apply if you believe in making a difference with your designs.

How do you reach us?

Well, after you send in your application, it takes us 2-3 weeks to review it. Sometimes, not often, we might delay just a bit beyond that. This happens when our mailbox is flooded with applications.

We promise we won’t ghost you, you’ll definitely hear from us. In the meantime, feel free to explore our official website.

Job Description

We are looking for a Full Stack Developer. 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.

Responsibilities

Work with development teams and product managers in agile methodology

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

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

Qualifications Skills

Proven experience as a Full Stack Developer or similar role.

Experience in developing web applications using Node.js, React.js, MySQL, AWS services.

Knowledge of multiple front-end languages and libraries (e. g. HTML/ CSS, JavaScript, XML, jQuery).

Knowledge of multiple JavaScript frameworks (e. g. React, Angular, Node.js ).

Familiarity with databases (e. g. MySQL, Mongo DB), web servers (e. g. Apache), and UI/UX design.

Excellent communication and teamwork skills.

We are looking for a talented full-stack software engineer to join our small and extremely talented product team. We love to build amazing products fast and with a high standard of code and UX, always on the cutting edge of new technologies.

Tasks

• Design and build features end-to-end. You'll be working on the frontend, backend, and anything in-between, whatever it takes to solve problems and delight users.
• Build beautiful and usable UIs with our modern toolset of React (NextJS, ES11, TypeScript) and TailwindCSS.
• Continue developing our distributed backend using Node (NestJS + TypeScript) and Rust. Technologies also include PostgreSQL, Redis, and RabbitMQ.
• Stitch many different services and APIs together, even if you have not worked with them before.
• Build solutions that take scaling and growth into consideration while balancing the time to launch.
• Engineer solutions to solve existing tech debt and write maintainable, sound and safe code.

Requirements

• 3+ years of experience as a Software Engineer, working with Typescript, React and serious interest or even better experience with Rust. However, we care much more about your general engineering skill than your knowledge of a particular language or framework.
• The ability to put yourself in the users' shoes and craft intuitive, high-quality web UI experiences
• A high bar for code quality and robustness for long-term expansion and use
• High personal initiative to learn, improve, and excel
• A Can-Do, entrepreneurial mentality with enjoyment for being a generalist
• DevOps: Experience with CI/CD pipelines, Docker, Kubernetes, and other DevOps tools.
• Experience with distributed systems, scaling applications, and/or microservices.
• Fluent in English (German is a plus)

Plus:

• Hands-on experience with the Rust
• Experience with functional programming
• Previously worked in an early-stage startup and experienced scaling of engineering teams

We are looking for a 2 to 3 years experienced Python Developer to join our team. As a part of our Technology/Solutions leadership team, you will be directly working with Product Engineering team in Designing the crawling algorithm from social media.

Skills: Python, Web crawling, Web scraping, Beautiful Soup, Snowflake, Scrapy

- Develop customised tools to automate critical business functions and meet project objectives, requirements and company goals

- Interact with manager as necessary to analyse project objectives and capability requirements

- Use skills in python and selenium to design and deploy automated tools

- Understand client databases and manage data and databases for internal reporting purposes

- Build solutions to source data from a variety of enterprise sources and/or external data sources to create complex competitive intelligence reports.
- Should be good at communication, writing and presentation skills and crawler domain knowledge and development experience is a must. 

We are looking for a Full Stack Developer 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 with 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.

If you’re also familiar with Agile methodologies, we’d like to meet you.

The exciting part of joining our organization is here for you. Once you complete a career span of 1year and above in our company based on your performance, you will get an opportunity to work in our onshore office in "Australia".

• Work with development teams and product managers 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
• Write effective TDD and BDD driven 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 software

About the company:

CogniTensor is an analytical software company that brings data to the heart of decision-making. CogniTensor leverages its product, DeepOptics - an integrated platform  to implement 3A (Automation, Analytics and AI) at scale. 

Cognitensor has customers ranging in Finance, Energy, Commodity, Retail & Manufacturing. More details can be found on our website: https://www.cognitensor.com/">https://www.cognitensor.com/

Our strategic investors include Shell and CIIE.CO (IIM-A/Accenture).

Qualification & Experience:

• BE/B.Tech Degree in Computer Programming, Computer Science, or a related field.

• +2 years experience as a Software Developer.

• Hands on experience in developing finance applications is must

Roles & Responsibilities:

We are looking for a Full Stack Developer 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. Along with familiar with Agile methodologies and testing skills

• Work with development teams and product managers to ideate software solutions
• Design client-side and server-side architecture
• Develop and manage well-functioning databases and applications
• Write effective APIs
• Write technical documentation
• Excellent communication and teamwork skills

Technical Skills:

Must Have

• React JS
• Git / Bitbucket, 
• Express JS, Python, HTML, CSS, Node JS
• CI/CD like CircleCI
• Postgres or any DB knowledge
• Familiarity with AWS  or Azure or both 

Good to Have

• Docker
• Redux
• Android development
• React Native
• Electron
• GraphQL
• Jira

What’s in for you:

• An opportunity to lead a business segment
• Extensive liaising with customers and partners
• A rewarding career progression

Preferred Location:

Delhi NCR

Swaypay is looking for a detail driven Senior Full Stack Software Engineer with remote startup experience who is comfortable asking “why?”. We want someone who can prioritize well, communicate clearly, and has a track record of delivery and excellent software engineering skills.

You'll work with the team to plan, shape, and build our new product features for both mobile and web. You'll get to use some of the latest technologies in order to build the best product possible.

During your time here, you will get the opportunity to work with most (if not all) of our systems — improving consumer facing products, helping to build the API, improving internal tooling, and simplifying our developer experience.

What you’ll do

• Work closely with other developers, UX designers
• Write and test code to ensure stability while refining as necessary
• Expand existing software and write new software to meet the evolving needs of our key demographics
• Build our mobile and web applications using React Native and React
• Write test cases to ensure product functionality across versions
• Design and implement the overall architecture of the system
• Design, construct, and integrate our API offerings
• Take complete ownership of features/work and deliver end to end

What we’re looking for

• 5+ years of experience building mobile and web applications using modern frameworks
• 2+ years of experience with React Native (mandatory)
• 1+ years of experience with backend technologies such as NodeJS, Golang, or Python
• Understanding of AWS, production deployment, and monitoring tools. K8 / Docker Swarm experience is an added bonus
• Excellent verbal and written communication
• “If it can go wrong – it will go wrong" mindset
• Familiarity with both unit and e2e tests
• Experience with databases (MySQL or other relational database)

You will be a great fit if you

• Are proactive about anticipating needs and solving for them before they become a problem
• Enjoy being part of a highly collaborative environment, including healthy conflict and debate to ensure the best product possible
• Have the ability to be self-directed and be effective working independently, yet feel equally comfortable contributing in a team environment
• Value quality
• Enjoy keeping up with the latest release to ensure our products are state of the art

Benefits

• Competitive pay and equity
• Remote-friendly
• Beautiful office in Jaipur (after COVID restrictions lift)
• India team retreats to places like Goa (after COVID restrictions lift)