Senior Software Engineer

When life gives you lemons and you can code both front and back with equal zest, you’re probably a Full Stack Developer we’d love on our team.

At Lemon Yellow, we’re looking for someone who thrives on building end-to-end web solutions using the MERN stack. From crafting intuitive front-ends to developing efficient, scalable back-end systems, you’ll be involved in shaping digital products from the ground up. If turning design mockups into pixel-perfect, high-performance applications excites you, we’re ready to build with you.

1. Core Responsibilities

• Build and maintain end-to-end web applications using the MERN stack.
• Act as a bridge between design and development to bring ideas to life with clean, scalable code.
• Support digital campaigns through intuitive and functional tech implementations.
• Design, develop, and deploy scalable front-end and back-end components.
• Write clean, maintainable code while collaborating with designers, marketers, and other developers.
• Translate product requirements and UI/UX wireframes into fully functional digital solutions.

2. API & Integration Management

• Implement RESTful APIs and connect third-party tools and services.
• Ensure smooth data exchange across platforms through secure integrations.
• Manage user authentication and authorization using mechanisms like JWT or OAuth.

3. Code Quality & Optimization

• Debug, profile, and optimize applications for performance and reliability.
• Maintain unit and integration test coverage for code robustness.
• Conduct code reviews and help improve internal coding standards.

4. Agile Collaboration

• Actively participate in agile activities: daily stand-ups, sprint planning, retros, and demos.
• Contribute to task estimation and cross-functional problem-solving.
• Stay responsive to project shifts and quick delivery needs.

5. Continuous Learning & Innovation

• Stay up to date with the latest development trends, tools, and practices.
• Share learnings and explore creative solutions for technical challenges.
• Experiment with emerging technologies and suggest process improvements.

Requirements

• Bachelor's degree in Computer Science, Software Engineering, or a related field.
• Minimum 1 year of hands-on experience building production-ready web applications using MongoDB, Express.js, React.js, and Node.js.
• Strong command of JavaScript (ES6+), HTML5, and CSS3.
• Experience with Git and version control systems
• Familiarity with RESTful API design, JSON, and authentication mechanisms (JWT, OAuth)
• Familiarity with cloud platforms (AWS, Azure, or GCP) and containerization (Docker).
• Basic understanding of CI/CD pipelines and automated testing.
• Strong analytical and problem-solving mindset.
• Detail-oriented with a passion for clean, maintainable code.
• Collaborative attitude with good verbal and written communication skills.

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.

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.

1、Job Responsibilities:

Backend Development (.NET)

• Design and implement ASP.NET Core WebAPIs
• Design and implement background jobs using Azure Function Apps
• Optimize performance for long-running operations, ensuring high concurrency and system stability.
• Develop efficient and scalable task scheduling solutions to execute periodic tasks

Frontend Development (React)

• Build high-performance, maintainable React applications and optimize component rendering.
• Continuously improving front-end performance using best practices
• Deployment & Operations
• Deploy React applications on Azure platforms (Azure Web Apps), ensuring smooth and reliable delivery.
• Collaborate with DevOps teams to enhance CI/CD pipelines and improve deployment efficiency.

2、Job Requirements:

Tech Stack:

• Backend: ASP.NET Core Web API, C#
• Frontend: React, JavaScript/TypeScript, Redux or other state management libraries
• Azure: Function Apps, Web Apps, Logic Apps
• Database: Cosmos DB, SQL Server

Strong knowledge of asynchronous programming, performance optimization, and task scheduling​

• Proficiency in React performance optimization techniques, understanding of virtual DOM and component lifecycle.​
• Experience with cloud deployment, preferably Azure App Service or Azure Static Web Apps.​
• Familiarity with Git and CI/CD workflows, with strong coding standards.

3、Project Background:

Mission: Transform Microsoft Cloud customers into fans by delivering exceptional support and engagement.​

• Scope:
• Customer reliability engineering
• Advanced cloud engineering and supportability
• Business management and operations
• Product and platform orchestration​
• Activities:
• Technical skilling programs
• AI strategy for customer experience
• Handling escalations and service reliability issues​

4、Project Highlights:

React Js, ASP.NET Core Web API; Azure Function Apps, Cosmos DB

MERN Stack Developer

Location: Surat, Gujarat (No WFH )

Job Summary:

We are looking for a Full Stack Developer (MERN) with hands-on experience in building highly scalable, performance-driven applications. The ideal candidate should have a deep understanding of both front-end and back-end development, microservices, and database optimization for large-scale systems. You will be responsible for designing, developing, and maintaining applications that can handle high concurrency (1,000+ active users) while ensuring performance, reliability, and scalability.

This role involves working closely with cross-functional teams — including product managers, designers, and DevOps engineers — to deliver cutting-edge, enterprise-grade solutions.

Roles & Responsibilities:

• Design and develop scalable and distributed web applications using the MERN stack (MongoDB, Express.js, React/Next.js, Node.js).
• Build and optimize RESTful APIs for high-performance, concurrent environments.
• Architect and manage MongoDB databases, ensuring high availability, efficient query performance, and scalability.
• Implement queueing systems (e.g., BullMQ, RabbitMQ, Kafka, or Redis Queues) for background jobs and asynchronous processing.
• Optimize server and client performance to support real-time data updates and high concurrent user loads.
• Collaborate with DevOps to improve deployment pipelines, containerization (Docker), and cloud scalability.
• Conduct thorough testing, profiling, and debugging to identify performance bottlenecks and optimize both code and infrastructure.
• Participate in code reviews, architecture discussions, and sprint planning to ensure technical excellence and scalability across all layers.

Qualification / Requirements:

• Bachelor’s degree in Computer Science, Engineering, or related field (or equivalent experience).
• 1 + years of hands-on experience in full-stack development using the MERN stack.
• Proven experience working on applications supporting 1,000+ concurrent users or large-scale distributed systems.
• Strong expertise in:
• Node.js (asynchronous programming, clustering, performance optimization)
• Next.js & React.js (SSR, CSR, and dynamic rendering)
• MongoDB (aggregation pipelines, indexing, schema design for scalability)
• Practical experience with message queues (BullMQ, RabbitMQ, Kafka, or Redis Streams).
• Familiarity with caching mechanisms (Redis, Memcached) to optimize performance.
• Experience with Docker and microservices-based architectures is a plus.
• Good understanding of API design, authentication mechanisms (JWT, OAuth), and security best practices.
• Experience working in Agile environments and using Git-based version control.

Nice to Have:

• Exposure to serverless computing (AWS Lambda).
• Experience with monitoring tools (New Relic, Datadog, ELK Stack).
• Knowledge of CI/CD pipelines and automated deployment workflows.
• Experience in real-time communication (WebSockets, Socket.io).

Description 

Our Software Architects are the strategic thinkers and technical leaders of. They design, validate, and guide the delivery of enterprise-grade systems that balance innovation, performance, scalability, and cost efficiency. 

At Sarvika, Software Architects work at the intersection of business strategy and technical execution. They collaborate across engineering, product, and design teams to define architecture blueprints, select technologies, and ensure systems evolve in alignment with customer goals. Architects are hands-on, often prototyping solutions and coaching teams, while also trusted to influence executives on technical direction. Here’s what you should know if you want to be a Software Architect at Sarvika. 

Requirements 

The ideal person 

● Proven track record in architecting and delivering large-scale, distributed software systems. 

● Expertise in modern architectural patterns: microservices, event-driven systems, composable commerce, headless architectures. 

● Ability to translate business strategy into actionable technical roadmaps and system designs. 

● Strong leadership skills: guiding engineering teams, mentoring individuals, and setting technical standards. 

● Excellent stakeholder management and communication skills, from engineers to C level. 

● Commitment to designing systems that are secure, performant, and cost-efficient.

Desirable Skills 

● Deep experience with multiple programming languages and frameworks (e.g., ● JavaScript/TypeScript, Node.js, React, Java, .NET, Python). 

● Strong knowledge of cloud-native architectures (AWS, GCP, Azure) and containerisation (Docker, Kubernetes). 

● Experience with data platforms, integration patterns, and API-first design (REST, GraphQL, gRPC). 

● Familiarity with CI/CD, DevOps, and Infrastructure-as-Code practices. ● Understanding of security standards, compliance (GDPR, SOC2), and enterprise IT constraints. 

● Ability to design for scalability across global markets and multi-tenant environments. ● Strong knowledge of design systems and front-end frameworks, ensuring alignment between presentation and infrastructure. 

● Experience leading architectural reviews, trade-off analysis, and decision records. ● Ability to mentor teams and establish communities of practice around architecture. ● Awareness of emerging technologies (AI, serverless, edge computing) and their practical application. 

On any given day you might 

● Define architecture blueprints and technical roadmaps for enterprise projects. ● Partner with product owners and business stakeholders to align architecture with strategic goals. 

● Make key technology selection decisions, balancing innovation with long-term maintainability. 

● Review system designs, ensuring alignment with principles of security, scalability, and performance. 

● Support engineering teams with hands-on prototyping and technical problem solving. ● Facilitate architectural reviews and communicate trade-offs to both technical and non-technical audiences. 

● Collaborate with designers to ensure UI/UX and architecture integrate seamlessly. ● Influence enterprise customers, helping them modernise platforms and adopt composable, headless, or cloud-native approaches. 

● Establish coding standards, architectural patterns, and governance processes. ● Share thought leadership internally and externally, positioning Sarvika as a trusted Advisor.

You bring 

● 7+ years of software development and architecture experience. 

● Expertise in designing cloud-native, distributed systems. 

● Proven success in leading technical decisions across multi-team programmes. ● Strong cross-functional collaboration and customer-facing skills. 

● Advanced understanding of system integration, security, and performance optimisation. 

● Familiarity with enterprise-scale delivery: migration projects, composable commerce, API ecosystems. 

● Advanced English, able to communicate at both executive and engineering levels. ● (Bonus) Experience contributing to open-source, publishing architectural thought pieces, or speaking at conferences.

Shift: UK Shift

We are hiring Full Stack Developers who are passionate, self-driven and capable of working in both frontend and backend technologies. They will work closely with our product team in building features and applications to directly benefit the product's growth.

We have a ton of interesting problems to solve. You will be surrounded by hard-working and smart developers who share the same goals as yours.

Responsibilities:

• Managing the complete software development process from conception to deployment
• Developing and managing well-functioning databases and applications.
• Modifying and testing changes to previously developed program
• Working effectively in collaboration with other teams /partners in Scaled Agile Framework and other support functions when required with a continuous focus on improving applications.
• Ensuring quality delivery of the code to UAT and production environments with complete ownership.
• Working towards improving code quality standardization.
• Maintaining and upgrading the software following deployment
• Managing the end-to-end life cycle for the production of software and applications
• Overseeing and guiding the analyzing, writing, building, and deployment of software
• Overseeing the automated testing and providing feedback to management during the development process
• Being creative in using tools and third-party services to deliver the code faster

Requirements:

• Extensive experience in Python in the backend
• Experience in web frameworks like Django
• Proficiency in HTML, CSS and Javascript front-end frameworks such as React, Vue or such
• Experience with Postgres, SQLite
• Experience with Version Control Systems like Git 
• Sound knowledge of Software engineering best practices
• Sound knowledge in RestFul API Design
• Good knowledge of database concepts
• Good understanding of incorporating ML models in Python applications
• Strong communication skills
• Experience in maintaining production servers
• Experience with AWS / Digital Ocean / Heroku

 Strong experience in front-end design and development minimum 3+ Year to implement responsive, robust/secure, user-friendly/functional, network -sensitive web applications.  Knowledge of REACT tools including React.js, Webpack, Enzyme, Redux, and Flux.  Experience with modern frameworks such as Nodejs, AngularJS Express  Experience in building API and WebSockets for client-server communication with security considerations.  Experience with server-side.  Experience with web services API integration (Rest, JSON, XML).  Ability to understand requirements and map to technical implementation.  Strong knowledge of best practices and modern web design trends is necessary.  Excel at rapid prototyping and at writing good code.  Experience with modern version control.  (GIT or BitBucket).  Experience with testing/debugging in multiple platforms.  Experience with HTML CSS frameworks such as bootstrap.  Understanding of general user experience and UI design principles.  Agile methodologies.  Self-motivated, thinking up and executing own ideas. 

Desired Candidate Profile Below are the qualifications and skills that are expedcte of a full-stack developer:

 Bachelor’s degree in computer science, engineering, or a related technical field  Excellent knowledge of front-end web programming languages, such as HTML, CSS, JavaScript, and AngularJS, with ability to render server-side and client-side content  A working knowledge of shopify app development with technologies, Node, Javascript, React, HTML, CSS3, AWS etc and MongoDB or relevant databases.  Familiarity with common programming design patterns and best practices  Experience with common web development tools and services, such as version control software, package managers, and CI/CD pipelines  Excellent written and verbal communication skills  Expert in JavaScript, DOM, CSS3 and HTML

Job Title: Full Stack Developer

Experience: 6-8 years    

Location: Pune 

Mandatory Skills Sets                                                                   

• Expert level design & coding skills .NET framework. Must have wide range of exposure to all .NET framework components like ASP.Net with C#, MVC Ado.Net, WPF, WCF etc. Unit Test Framework
• Good exposure to UI technologies like HTML, CSS, Java Script, JQuery, JQuery, Bootstrap, Angular
• Work on relational database systems, Object Oriented Programming and web application development                                                                
• Non-relational database – Mongo DB/Postgres
• Agile development methodologies and techniques & tools
• Experience in web services, Microservices
• Experience in developing complex/custom application
• Should be able to mentor Software Engineers to support design, code and meet software quality code standards as well as independently design and deliver projects
• Technical Hands on, Passionate, creative and team player
• Solving critical business problems and strong delivery focused
• Excellent Communication and problem-solving skills

Preferred Skills Sets

• Experience in cloud native application development using Azure or AWS will be an advantage
• Direct customer communication with European/US customers.
• Customer site work experience