Fullstack Developer

Technical Lead – Full Stack 

Overview 

We are seeking a high-caliber Tech Lead – Full Stack to join our Digital Twin Platform and Simulation team. In this role, you will translate high-level architectural visions into robust, executable low-level designs (LLD). You will be the technical anchor for the squad by providing deep technical guidance and maintaining rigorous standards you will enable the team to deliver scalable interfaces and services that power our digital twin ecosystem. 

Our Core Full Stack Stack 

Front-End Engineering 

• React + TypeScript (with Next.js), ShadCN/UI, Tailwind CSS for building complex, state-heavy interactive dashboards.
• JavaScript (ES6+) and TypeScript for type-safe management of simulation data 
• State management (Redux/Zustand) optimized for high-frequency data updates 

·      Experience in ESRI ArcGIS Map usage in UI is a big plus.

Back-End & Microservices 

• Java and Spring Boot for building high-scale, resilient microservices 
• REST APIs for seamless communication between services and front-end consumers 
• Microservices architecture and system integration patterns 
• Experience designing, building, and integrating RESTful or GraphQL APIs, Protobuf with gRPC and gRPC-Web  

Engineering Excellence 

• GitHub for version control and rigorous Code Reviews 
• CI/CD pipelines, Docker, and Kubernetes for cloud-native deployment 

Key Responsibilities 

• Low-Level Design (LLD): Convert high-level architectural blueprints into detailed technical designs, including class diagrams, sequence diagrams, and API specifications. 
• Technical Mentoring: Lead and coach the engineering team through pair programming, technical 1-on-1s, and hands-on guidance to elevate overall team competency. 
• Standards Enforcement: Ensure all code adheres to the defined engineering standards, SOLID principles, and design patterns established by the Architects. 
• Code Quality & Review: Conduct comprehensive code reviews to maintain high quality, ensuring the team delivers clean, testable, and maintainable code. 
• Technical Anchoring: Serve as the "go-to" expert for the squad to resolve complex technical blockers and provide clarity on implementation details. 
• Hands-on Development: Direct implementation of critical and complex modules, setting the benchmark for performance and reliability. 
• System Integration: Oversee the technical execution of integrations between full-stack applications and core data layers (Databricks/Neo4j). 
• Delivery Governance: Ensure the squad meets sprint objectives by maintaining a high standard of execution and managing technical debt effectively. 

Preferred Qualifications 

• 8 to 10 years of professional experience in full-stack software development. 
• Proven track record in a Tech Lead capacity, with strong experience in creating Low-Level Designs. 
• Expert-level proficiency in Java, Spring Boot, and React. 
• Deep understanding of Microservices architecture and RESTful API design. 
• Familiarity with ShadCN/UI familiarity along with Material UI, Storybook, and/or similar tools
• Demonstrated ability to mentor engineering teams and drive technical excellence in an Agile environment. 
• Experience working in the India tech region, preferably within high-growth product engineering teams.

Highly Desirable 

• Experience building platforms for Digital Twin, IoT, or Simulation environments. 
• Familiarity with visualizing complex networks or real-time operational data. 
• Knowledge of performance tuning for both front-end rendering and back-end processing. 
• Experience leading teams in an Agile/Scrum environment. 
• Exposure to industrial domains such as Manufacturing, Logistics, or Transportation is a plus. 

Location: Hyderabad, Telangana 

Department: Engineering 

Employment Type: Full-Time 

Role: Senior Full Stack Java Developer

Company: Feuji Software Solutions Pvt Ltd.

Mode of Hire: Permanent Position

Experience: 5 – 8 years

Work Location: Hyderabad, India

About Feuji

Feuji, established in 2014 and headquartered in Dallas, Texas, is a rapidly growing global technology services provider. With strategic locations including a Nearshore facility in San Jose, Costa Rica, and Offshore Delivery Centers in Hyderabad, and Bangalore, we cater to a diverse clientele.

Our team of 400+ talented engineers specialize in delivering cutting-edge solutions in managed cloud services, cybersecurity, product and quality engineering, and data-driven insights. Collaborating with industry leaders such as Microsoft, HP, GSK, and DXC Technologies, we empower organizations to achieve their business goals.

At Feuji, we prioritize creating 'Happy Teams' and fostering a culture of innovation, growth, and excellence.

Position Summary

The Senior Software Engineer is responsible for the design, development, quality, and release of our organization's web and mobile applications.

Essential Functions

• The Senior Software Engineer is responsible for the design, development, and release of our organization's web and mobile applications. 

• Working closely with Product owners and other stakeholders to understand the business need and design software solutions to meet the product requirements 

• Develops applications using Application programming interfaces (APIs) and service-oriented architecture 

• Develops unit and automation test scripts under the test-driven development lifecycle 

• Contributes to the coding best practices by participating in code reviews and supporting code merges and releases.

Education

• Bachelor's Degree Computer Science, Engineering, or related field preferred

Work Experience

• Typically 5+ years Hands-on object-oriented programming in Java and Javascript (UI) frameworks

Skills

• Understanding of all phases of Software development life cycle

• Software Development Experience with Java

• Experience with UI modern framework like AngularJS or ReactJS

• Experience with microservice architecture, end-to-end UI/API integration, and knowledge of API protocols like REST, gRPC, and graphQL

• Familiar with coding and testing best practices as well as ability to understand complex business problems and design high quality technical solutions.

• Knowledge about the Caching technologies and DBMS technologies like Oracle or MySQL, Postgres, MongoDB

• Strong Problem-solving, communication and organizational skills

3 - 5 Years of experience, in that min 2 years of experience with PHP MVC frameworks like

Laravel(preferred), CodeIgniter, etc.

Strong Experience in PHP and MySQL and their declarative query languages

Understanding the fully synchronous behaviour of PHP

Strong experience in JavaScript and good to have working knowledge on any JS frameworks like Angular (Preferred) React, Python etc. - Understanding of MVC design patterns

Good understanding of front-end technologies JavaScript, jQuery, Angular, HTML, and CSS3

Knowledge of object-oriented PHP programming

Understanding accessibility and security compliance

Strong knowledge of the common PHP or web server exploits and their solutions

Understanding fundamental design principles behind a scalable application

User authentication and authorization between multiple systems, servers, and environments

Integration of multiple data sources and databases into one system

Familiarity with limitations of PHP as a platform and its workarounds

Creating database schemas that represent and support business processes

Proficient understanding of code versioning tools, such as Git

Basic knowledge of AWS and Shell command

We have an opening for Sr Lead Software Engineer -Full / Mern Stack Developer.

Responsibilities :

• Responsible for writing reusable, testable, and efficient code
• Design and implementation of low-latency, high-availability, and performant applications
• Implementation of security and data protection
• Understanding of performance testing and optimization techniques

Requirements

• Should have the ability to translate Wireframes and PSD Designs into functional web apps using HTML5, React , Node.js, and Mongo.
• Binding of UI elements to JavaScript object models
• Creating RESTful services with Node.js
• Architect scalable web architectures
• Must have proven experience in front ( Rect.js)& back-end development (Node.js)
• Work in a cross-functional team to deliver a complete user experience
• Must know MongoDB, Express, Node.js, & React., Typescript, CSS, HTML, Bootstrap
• Create Unit and Integration tests to ensure the quality of code
• Be responsive to change requests and feature requests
• Write code that is cross-platform and cross-device compatible
• Must have the ability to wear many hats and learn new technologies quickly
• Candidate must have good Knowledge of Node Debugging
• Understanding & proficiency in REST APIs.
• Should know Git Repository and Jira.
• Integration of data storage solutions [RDBMS, NoSQL DB]

Qualifications

Having Expereince in MongoDB - Document DataBase,

Node.js —Express(.js) web framework -Backend

React(.js) — a client-side JavaScript framework along with Bootstrap , HTML5, CSS3 - Frontend

Education : B Tech , BCA or Equivalent

Relevant Experience : 3 to 9 years : Full Stack developer

Preferred Candidate : Immediate Joiner

Location: Kolkata only ( Onsite).

Full-stack developer  - Remote position

Are you...

• Interested in working at a successful, well-funded start-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.

Our product team is lead by one of the founders and complete with a director of engineering, product manager, UX designer, one mobile developer and one senior full-stack developer who will be mentoring you. We want to work with a developer who cares about the way their code impacts the people who use it.

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
• Front end web in TypeScript & Angular or Node & React
• 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

• 2-4 years experience in C#
• Front-end web experience in Angular
• Track record of building great products
• Excited about understanding the real problems working people come up against and fixing them with technology
• You’ll love the idea of being a big part of a small team: if you come up with a great idea, you can take it all the way to production
• 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 start-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.