Fullstack Developer

Required Skills & Qualifications

● Strong hands-on experience with LLM frameworks and models, including LangChain,

OpenAI (GPT-4), and LLaMA

● Proven experience in LLM orchestration, workflow management, and multi-agent

system design using frameworks such as LangGraph

● Strong problem-solving skills with the ability to propose end-to-end solutions and

contribute at an architectural/system design level

● Experience building scalable AI-backed backend services using FastAPI and

asynchronous programming patterns

● Solid experience with cloud infrastructure on AWS, including EC2, S3, and Load

Balancers

● Hands-on experience with Docker and containerization for deploying and managing

AI/ML applications

● Good understanding of Transformer-based architectures and how modern LLMs work

internally

● Strong skills in data processing and analysis using NumPy and Pandas

● Experience with data visualization tools such as Matplotlib and Seaborn for analysis

and insights

● Hands-on experience with Retrieval-Augmented Generation (RAG), including

document ingestion, embeddings, and vector search pipelines

● Experience in model optimization and training techniques, including fine-tuning,

LoRA, and QLoRA

Nice to Have / Preferred

● Experience designing and operating production-grade AI systems

● Familiarity with cost optimization, observability, and performance tuning for

LLM-based applications

● Exposure to multi-cloud or large-scale AI platforms

Job Title: MERN Stack Developer (5+ Years Experience)

Position: MERN Stack Developer

Location: Ahmedabad (On-Site)

Onshore Opportunity

Experience: 5 to 7

Joining: Immediate Joiners Preferred

Employment Type: Full-Time

About the Role

We are seeking a talented and experienced MERN Stack Developer to join our on-site team. As a key member of our development team, you will be responsible for building and maintaining high-performance web applications using MongoDB, Express.js, React.js, and Node.js.

Key Responsibilities

• Develop and maintain scalable, responsive web applications using the MERN stack
• Write clean, efficient, and well-documented code
• Integrate APIs and third-party services
• Work closely with UI/UX designers, QA, and product teams
• Optimize applications for maximum speed and scalability
• Perform code reviews and provide constructive feedback
• Debug and resolve technical issues and bugs
• Ensure cross-platform and cross-browser compatibility

Required Skills & Qualifications

• 5+ years of professional experience with the MERN stack
• Strong proficiency in JavaScript, ES6+, HTML5, and CSS3
• In-depth experience with React.js (including hooks, Redux, component lifecycle)
• Strong backend development skills using Node.js and Express.js
• Proficient in working with MongoDB, including aggregation, indexing, and schema design
• Experience with RESTful APIs and JSON
• Familiarity with Git and version control workflows
• Strong problem-solving and debugging skills
• Excellent communication and teamwork abilities
• 
  

Must-Have Experience

•  5+ years working professionally with the MERN stack
•  Has experience in a team lead role
•  Expertise in JavaScript (ES6+), HTML5, CSS3
•  Deep understanding of React.js (Hooks, Redux, lifecycle)
•  Backend development with Node.js & Express.js
•  Strong hands-on with MongoDB (schemas, indexing, aggregation)
•  API integration, Git, version control, and debugging

Preferred Qualifications

• Experience with deployment on AWS, Heroku, or similar cloud platforms
• Familiarity with containerization tools like Docker
• Experience with testing frameworks such as Jest or Mocha
• Knowledge of agile methodologies

Delivery Solutions is a Retail eCommerce OXM Platform that provides retailers with out-of-the-box solutions to power Same-Day Delivery, Curbside, In-Store Pickup, Shipping, and Post Purchase experiences. We are trusted with some of the biggest names in multiple verticals of retail like Sephora, AT&T, Footlocker, Michael's, Office Depot, GameStop, Total Wine, Sally Beauty, Abercrombie & Fitch Co. Belk, Loblaw, Vineyard Vines etc.

Our SAAS-based solution is highly flexible and interacts seamlessly with E-commerce properties, OMS, WMS, and POS systems for a highly scalable experience and a delighted customer base.

Delivery Solutions is a wholly-owned subsidiary of UPS | We are a certified Great Places To Work Company

Role: Senior Software Engineer - MEAN Stack

Reports to: Team Lead

Division/Department: Product

Work Location: India - Remote / Pune

We are seeking highly skilled and experienced Senior Software Engineers to join our SaaS company. As a Senior Software Engineer, you will play a pivotal role in the development and enhancement of our cutting-edge software products. You will work closely with cross-functional teams to design, develop, and deploy scalable software solutions using the MEAN stack (MongoDB, Express.js, Angular, Node.js) and related technologies.

Responsibilities:

• Collaborate with product managers, designers, and other stakeholders to define software requirements and translate them into technical specifications.
• Design and develop robust and scalable software solutions using the MEAN stack and other relevant technologies.
• Take ownership of feature development and deliver high-quality code on time.
• Participate in code reviews to ensure code quality and adherence to coding standards.
• Troubleshoot and debug software issues, and identify and implement effective solutions.
• Collaborate with DevOps teams to ensure smooth deployment and operation of software applications.
• Stay up-to-date with the latest industry trends, tools, and technologies and make recommendations for process improvements.

Qualifications:

• Bachelor's degree in Computer Science, Software Engineering, or a related field. (Master's degree preferred)
• 4+ years of hands-on experience in MEAN stack development, including MongoDB, Express.js, Angular (version 2 or higher), and Node.js.
• Proven experience working in a product-based company, delivering software solutions to customers.
• Strong understanding of Agile methodologies and Agile development practices.
• Proficient in front-end technologies such as Angular, HTML, CSS, and responsive design principles.
• Solid understanding of back-end technologies including Node.js, RESTful APIs, and server-side frameworks.
• Experience with cloud platforms, specifically AWS, and familiarity with related services.
• Knowledge of JSON, Kibana, JIRA, and Jenkins is a plus.
• Strong problem-solving skills and the ability to work independently as well as in a team.
• Excellent communication and interpersonal skills, with the ability to effectively collaborate with cross-functional teams.

Requirements:

• 10+ years in Product development.
• Strong belief in software craftsmanship and practicing it in day-to-day work, expert in Microsoft. NET technology stack is a must.
• Strong hands-on experience in web development using ASP. NET MVC and C#.
• Usage of SQL and no SQL databases.
• Hands on experience in test-driven development and DevOps practices.
• Strong design capabilities, following SOLID principles using C#.
• Working on solutions hosted in cloud environments (AWS or Azure).
• Implementation of Continuous Delivery processes.
• Good understanding of Behaviour-driven development and domain-driven design.

Excellent communicator

Responsibilities:

• Contribution to the product roadmap in sprint model.
• Helping your team to deliver at high velocity.
• Practice and promote Agile practices.
• Continuously learn and deliver incremental business value.
• Use Continuous Delivery Practices.
• Mentor junior team members.
• Develop of asynchronous and/or multi-tiered scalable applications.

• Proven experience as a Full Stack Developer or similar role
• Experience developing desktop and mobile applications
• Knowledge of multiple front-end languages and libraries (e.g. HTML/ CSS, JavaScript, XML, jQuery)
• Minimum 1 years of experiance in ROR or Angular.
• Excellent communication and teamwork skills
• Great attention to detail
• An analytical mind

• - Work with UX and Product Management teams to design software
• - Work with Architects and Engineering leads to build scalable software
• - Back-end software development
• - Proficient in low level system arch design
• - Strong knowledge of web development - MVC, React / Angular Framework
• - Take Product Ownership
• - Testing and fixing bugs
• - Create security and data protection settings
• - Build features with a mobile responsive design
• - Experience with Agile/Scrum methodology, Behavior Driven Development, and CI/CD
• - Ability to think critically and creatively in a dynamic environment, while picking up new tools and domain knowledge along the way

• - 3+ years of industry experience as a Backend/Full Stack Engineer
• - Degree in Computer Science or related field
• - Experience with developing web and mobile applications
• - Must have 2-5 years of experience building applications using front end technologies like – React, Angular 2+, JavaScript/Typescript, HTML5, CSS3 and Bootstrap 
• - Must have 2-5 years of full time Python (Django) experience, and hands-on experience through all stages of Agile software development life cycle. 
• - Ability to write optimized codes, debug programs, and integrate applications with third party tools by developing various APIs.
• - Proficiency with Python or relevant back-end scripting language
• - Proficiency with SQL/NoSQL databases, web servers (e.g. Nginx)
• - Experience with Cloud infrastructure (e.g. AWS), relevant microservices and load scaling
• - Maintains a strong knowledge base of new open source tech stacks, applications, techniques, and skills

• - A positive attitude, and a growth mindset
• - Great attention to details

• - Experience with serverless deployment  (e.g. Lambda)
• - Experience with API testing software (e.g. Postman)
• - Experience with multiple front-end languages and libraries (e.g. HTML/CSS, JS)
• - Good Humor

Role Features:

- With over 50 people across Technology, Product, Sales, Operations and other functions, we are ramping up our team to meet our goal of being a go-to destination fintech platform that delivers world-class products for merchants and customers.

- We are looking to add people to our team who are passionate about technology, products, consumer internet, payments & fintech.

- Credit Fair values people who bring intellectual energy to our workplace are able to contribute without constant supervision, are collaborative by nature and able to flourish under pressure. In return, we promise to provide you an environment that promotes meritocracy, values feedback and ideas, learns from its failures, and enjoys each other's company and contributions.

Skills you are expected to have :

- Technical Skills: PHP, Laravel, MySql, Jquery, Javascript, Python, React Native, PWA, Node.js
- Candidate should have experience in developing applications using PHP programming skills.
- Experience in python would be a plus
- Strong in DB knowledge
- Should be good with OOPS Concept
- Should be good in system design, architecture and development using object-oriented programming
- Should be good in writing secure and optimized code
- Experience in Laravel framework. If not then other PHP based frameworks like Codeigniter, Zend, CakePHP, symphony, etc.
- Good understanding/experience on software development methodology such as Agile, TDD, etc.
- Good understanding of source control tools and its use (SVN, Git, etc...)
- Experience in the development of Rest APIs and API testing tools such as postman etc.
- Experience in micro service-based development would be a plus
- Experience in queuing systems such as rabbitMQ, Active MQ etc.
- Experience in AWS cloud solution
- Experience in deployments and devops
- Excellent written and verbal communication skills
- Proactive, self-learner, thorough, organized and energetic
- Able to work across teams as well as independently
- Perform code review of peers
- Good analytical and communication skills
- Good experience in the Fintech domain (Payments/ Banking/ Wallets/ Insurance/ Financial Markets)
Primary Skills: PHP, Laravel, MySQL, Jquery, Javascript
Secondary Skills: Python, Rabbit MQ, AWS, CI/CD, React JS, PWA, Node.js, HTML, Jenkin