FullStack Developer

Job Description: Full Stack Developer 

Role Overview

We are seeking a skilled Full Stack Developer with a minimum of 3+ years of hands-on experience in building modern web and mobile applications. The ideal candidate will have strong expertise in React and/or Flutter on the frontend, backed by Java based backend development, and the ability to work across the full software delivery lifecycle.

This role requires a pragmatic engineer who can translate business requirements into scalable, maintainable solutions while collaborating effectively with product, QA, and DevOps teams.

Key Responsibilities

• Design, develop, and maintain full-stack applications with responsive web and/or cross platform mobile interfaces
• Build and optimize frontend components using React and/or Flutter with a focus on performance and usability
• Develop backend services and APIs using Java (Spring / Spring Boot preferred)
• Integrate frontend applications with backend services via RESTful APIs
• Write clean, well structured, and testable code following best practices
• Participate in architecture discussions, code reviews, and technical decision-making
• Debug, troubleshoot, and resolve application issues across the stack
• Collaborate closely with designers, product managers, and other engineers
• Support deployments and work with DevOps pipelines where required

Required Skills & Experience

• Minimum 3 years of professional experience as a Full Stack Developer
• Strong experience with React and/or Flutter
• Solid backend development experience using Java
• Experience building REST APIs and integrating frontend with backend services
• Working knowledge of HTML, CSS, JavaScript, and modern frontend tooling
• Familiarity with relational databases (PostgreSQL/MySQL) and basic query optimization
• Experience with Git and collaborative development workflows
• Understanding of application security, authentication, and authorization concepts

Preferred Skills

• Experience with Spring Boot, Hibernate/JPA
• Exposure to Node.js or Angular
• Experience with cloud platforms (AWS preferred)
• Familiarity with CI/CD pipelines and containerization (Docker)
• Experience building offline capable or mobile first applications
• Prior work in enterprise or product based environments

Soft Skills

• Strong problem solving and analytical abilities
• Good communication skills and ability to work in cross functional teams
• Ownership mindset with attention to code quality and maintainability
• Ability to adapt quickly in a fast paced development environment

Experience Level

• 3+ years of relevant full stack development experience

Educational Qualification

• Bachelor’s degree in Computer Science, Information Technology, or a related field
• A Master’s degree or equivalent exper

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.

Job Title: SRE Lead Engineer

Location: Hyderabad, India

Company: Client of Options Executive Search, AI Saas Product Development Company

We are seeking a DevOps / SRE Lead Engineer to architect and scale our client's multi-tenant SaaS platform with AI/ML at the core..

Our client, a fast-growing AI-powered SaaS company in the FinTech space, is looking for a Site Reliability Engineering (SRE) Lead Engineer to join their dynamic team. This is an opportunity to design and operate large-scale SaaS systems that integrate cutting-edge AI/ML capabilities.

About the Role

As the SRE Lead Engineer, you will be responsible for architecting, building, and maintaining infrastructure that powers a multi-tenant SaaS platform. You’ll drive reliability, scalability, and security, while supporting AI/ML pipelines in production. This is a hands-on role with significant ownership, requiring both technical depth and leadership in site reliability practices.

Key Responsibilities

• Architect, design, and deploy end-to-end infrastructure for large-scale, microservices-based SaaS platforms.
• Ensure system reliability, scalability, and security for AI/ML model integrations and data pipelines.
• Automate environment provisioning and management using Terraform in AWS (EKS-focused).
• Implement full-stack observability across applications, networks, and operating systems.
• Lead incident management and participate in 24/7 on-call rotation.
• Optimize SaaS reliability while enabling REST APIs, SSO integrations (Okta/Auth0), and cloud data services (RDS/MySQL, Elasticsearch).
• Define and maintain backup and disaster recovery for critical workloads.

Required Skills & Experience

• 8+ years in SRE/DevOps roles, managing enterprise SaaS applications in production.
• Minimum 1 year experience with AI/ML infrastructure or model-serving environments.
• Strong expertise in AWS cloud, particularly EKS, container orchestration, and Kubernetes.
• Hands-on experience with Infrastructure as Code (Terraform), Docker, and scripting (Python, Bash).
• Solid Linux OS and networking fundamentals.
• Experience in monitoring and observability with ELK, CloudWatch, or similar tools.
• Strong track record with microservices, REST APIs, SSO, and cloud databases.

Nice-to-Have Skills

• Experience with MLOps and AI/ML pipeline observability.
• Cost optimization and security hardening in multi-tenant SaaS.
• Prior exposure to FinTech or enterprise finance solutions.

Qualifications

• Bachelor’s degree in Computer Science, Engineering, or related discipline.
• AWS Certified Solutions Architect (strongly preferred).
• Experience in early-stage or high-growth startups is an advantage.

Why Join?

• Be at the forefront of AI/ML-powered SaaS innovation in FinTech.
• Work with a high-energy, entrepreneurial team building next-gen infrastructure.
• Take ownership of mission-critical reliability challenges.
• Grow your career in an environment that values impact, adaptability, and innovation.

If you’re passionate about building secure, scalable, and intelligent platforms, we’d love to hear from you. Apply now to be part of our client’s journey in redefining enterprise finance operations.

• Hands-on expertise in managing technical teams and work closely with business stakeholders
• Should be familiar with card testing and POS ecosystem.
• Experience with designing APIs and building platform integrations in Commerce, POS, FinTech and Payments
• Payment’s domain experience.
• Extensive experience on Base24 & SWITCH part for payment format.
• Exposure on ISO8583 Messaging system.
• API understanding and creation.
• Working knowledge on cryptographic algorithms (RSA, EC, AES, SHA variants), TLS/SSL protocols. C Symetric and A symetrics, K.M.S.
• Digital Payments technical knowledge - QR/ POS/ UPI/ BQR
• Understanding of CI/CD pipelines, Kubernetes, containerization, Docker
• Must have strong technical skills in Android APK and iOS development Concept and Web services.
• Supportability, monitoring, ops in general.
• Accurate cost models to deploy and operate
• Extensive experience in TLOG’s, data integration with downstream applications, and impact of POS changes on different financial, legal, compliance, loss prevention, etc. applications.
• Extensive experience with payment systems 7861 (EMV, payment middleware, encryption, tokenization, settlement, offline scenarios,).
• Extensive experience with different types of payment methods including credit, debit, gift cards (Both closed loop and open loop), PLCC, PayPal, AliPay, checks, etc. as well as different payment form factors like Tap N Go, contactless, swipe, EMV, Mobile, etc.
• Extensive experience with payment devices (pin pads, printers, registers, scanners).
• Experience in Node.js / Java / Python, building REST APIs, with experience/exposure to front end stack like JavaScript & React / Angular. 
• Experience with Storage systems - RDBMS, NoSQL (Cassandra/MongoDB), Redis/Memcache/Aerospike.
• Experience in messaging tools like Kafka/AWS Kinesis etc...
• Design expertise for performance, scalability, fault tolerance and high availability

• Experience with POS systems and Payments domain.
• Demonstrated experience for systems architecture, design, and integration for POS systems
• Java and/or Node.js. Experience building micro services (REST APIs) using Node.js
• Experience with one or more RDBMS databases like MySql, PostGreSQL
• Experience with one or more NoSQL databses like MongoDB, Cassandra, DynamoDB, Aerospike, Elastic Search, Redis, neo4j etc.,
• Caching technologies like: Redis, Elasticache,
• Cloud Providers like: AWS/ Google Cloud / Azure
• CI / CD : Jenkins, Docker, Kubernete
  

Professional development experience, working the Full stack on large scale B2B, SaaS products. • Expertise with learning new technologies and strong experience with our tech stack AngularJS, JavaScript, Node.js, Go, React.js and Postgres. • Bachelor’sin Computer Scienceorsolid knowledgeof CS fundamentals(OOP, designpatterns, algorithms, etc...) • Experience and adesire towork in a fast-paced environment. • We are a leading cloud-based open platform used by some of the most prestigious companies around • You will get to work with some of the most complex technologies on the market today • You will have an opportunity to work at all levels of the organization.

We are looking for Full Stack Developer.

Experience - 2 to 5 years 

Location - Ahmedabad 

5 Days working 

Required Skills:

• Should have strong hands on experience in Node.js, React.js & Angular.js.
• Deep understanding of object - oriented JavaScript and design principles and standards, and has a solid programming background
• Experience handling different browser capabilities
• Hands - on experience in UI optimization best practice implementations
• Demonstrated ability to accurately estimate and scope development work
• Good analytical and problem - solving skills
• Communication skills are imperative both in written and in verbal form
• Excellent organizational and coordination skills

Required Skills:

• .NET Core 
• C#
• Web API
• Aware of Microservice concepts
• MongoDB 
• Excellent communication
  
  

Docker, Kubernetes, and Linux knowledge is desirable. Having worked in a product development environment is desirable. Having worked in the finance and banking domain is desirable.

• Developing front end website architectur
• Developing back end website applications
•  
• Creating servers and databases for functionality
• Ensuring responsiveness of applications
• Seeing through a project from conception to finished product
• Designing and developing APIs
• Staying up to date in web applications and programming languages
• In-depth understanding of the entire web development process ( development and deployment)
• Write maintainable/scalable/efficient code.
• Design and architect technical solutions for the business problems
• Developing mobile application
• Working on Progressive Web App (PWA), Accelerated Mobile Pages(AMP)
• Working on PHP framework like laravel and codeigniter
• Working on web optimization tool like grunt/gulp.
•  

REQUIRED SKILLS

• PHP, Mysql, HTML, CSS, Javascript, Bootstrap, Jquery
• Need excellent working knowledge on creating a responsive website and any PHP framework like Laravel or codeigniter

• It will be added advantage if you know angularjs1/ angularjs/ reactjs and web optimization tool like grunt/gulp

1. Roles & Responsibilities -
   
   * We are looking for full-stack/back-end developers.
   * Our ideal candidate will be able to build applications from scratch and deliver
   a complete project i.e. understand requirements, design architecture, write reusable code that follows basic coding standards, test, deploy and support/follow-up features.
   * As a start-up, we are keen to work with people who are passionate about technology and who love the speed, chaos, and versatility of start-ups.
   
   Skills and Qualifications -
   
   * Team player with strong work ethic; Detail and deadline-oriented; Take ownership of tasks.
   * Good with version control systems like Git.
   * Professional understanding of CS fundamentals, data structures and algorithms.
   * Knowledge of Python is preferred.
   * Hands-on experience with front-end technologies - HTML5, CSS3, Bootstrap library & JavaScript/jQuery.
   * Knowledge of Angular 2/ReactJs is a plus.
   * Knowledge of Rest API is a plus.
   
   
   Perks -
   * Competetive compensation
   * MaBook
   * Friendly Leave Policy