Senior Fullstack Developer

About the Role:

We are looking for a skilled Full-Stack Developer with expertise in Python, JavaScript, and No-Code AI tools to join our dynamic team. The ideal candidate should be proficient in both backend and frontend development, capable of working with modern frameworks, and have experience in LLM prompt engineering, data extraction, and response formatting.

Key Responsibilities:

• Develop and maintain scalable backend services using FastAPI / Flask / Django.
• Build dynamic front-end applications using React / Next.js.
• Implement LLM-based solutions for data extraction and response formatting.
• Design and optimize databases using Milvus / Weaviate / Pinecone for vector storage and MongoDB / MySQL for structured data.
• Collaborate with cross-functional teams to deliver high-quality AI-driven applications.
• Ensure application performance, security, and scalability.
• Communicate technical ideas effectively through written and verbal communication.

Required Skills & Qualifications:

Technical Skills:

• Programming: Proficiency in Python and JavaScript.
• Backend: Experience with FastAPI / Flask / Django.
• Frontend: Strong understanding of React / Next.js.
• Database: Knowledge of at least one vector database (Milvus / Weaviate / Pinecone) and one relational or NoSQL database (MongoDB / MySQL).
• No-Code AI & LLM:
• Expertise in LLM Prompt Engineering.
• Experience with data extraction from context and response formatting.

Soft Skills:

• Strong written and verbal communication skills.
• Ability to collaborate effectively with teams and clients.
• Problem-solving mindset with a focus on innovation and efficiency.

Javascript, Callback, Async, Promise, Experience in writing restful APIs, Javascript, Nodejs, ReactJs, MySQL.

Immediate Joiner

About Cognida.ai:

Our Purpose is to boost your competitive advantage using AI and Analytics.

We Deliver tangible business impact with data-driven insights powered by AI. Drive revenue growth, increase profitability and improve operational efficiencies.

We Are technologists with keen business acumen - Forever curious, always on the front lines of technological advancements. Applying our latest learnings, and tools to solve your everyday business challenges.

We Believe the power of AI should not be the exclusive preserve of the few. Every business, regardless of its size or sector deserves the opportunity to harness the power of AI to make better decisions and drive business value.

We See a world where our AI and Analytics solutions democratise decision intelligence for all businesses. With Cognida.ai, our motto is ‘No enterprise left behind’.

Position: Python Fullstack Architect

Location: Hyderabad

Job Summary

We’re seeking a seasoned Python Fullstack Architect with 15+ years of experience to lead solution design, mentor teams, and drive technical excellence across projects. You'll work closely with stakeholders, contribute to architecture governance, and integrate modern technologies across the stack.

Key Responsibilities

• Design and review Python-based fullstack solution architectures.
• Guide development teams on best practices, modern frameworks, and cloud-native patterns.
• Engage with clients to translate business needs into scalable technical solutions.
• Stay current with tech trends and contribute to internal innovation initiatives.

Required Skills

• Strong expertise in Python (Django/Flask/FastAPI) and frontend frameworks (React, Angular, etc.).
• Cloud experience (AWS, Azure, or GCP) and DevOps/CI-CD setup.
• Familiarity with enterprise tools: RabbitMQ, Kafka, OAuth2, PostgreSQL, MongoDB.
• Solid understanding of microservices, API design, batch/stream processing.
• Strong leadership, mentoring, and architectural problem-solving skills.

Job Description: Principal Engineer (Full Stack Architect)

Job Title: Full Stack Architect

Location: Hyderabad, India

Experience: 15Years to 20 years (4+ years in Enterprise Architecture)

Technology Stack: MERN (MongoDB, Express, React, Node.js), Distributed Systems, Cloud (GCP/Azure), Neo4j, Vector Databases, SQL and NoSQL Databases, Knowledge Graphs.

Industry: Enterprise Software, Large-Scale Distributed Systems, Machine Learning

Job Summary

As a Full Stack Architect, you will play a pivotal role in designing and architecting large-scale distributed systems with a strong focus on the MERN stack (MongoDB, Express.js, React, Node.js). You will lead the design and implementation of enterprise-grade software solutions that leverage cloud infrastructure (GCP/Azure), knowledge graphs (Neo4j), vector databases, and machine learning at scale. In this role, you will work closely with cross-functional teams including data scientists, cloud engineers, and front-end developers to deliver high-performance, secure, and scalable applications.

This role requires a deep understanding of distributed systems architecture, graph databases, machine learning systems, and cloud computing, with a strong focus on building solutions that meet business and technical needs. The ideal candidate will have 12+ years of experience with a proven track record of architecting full-stack systems and leading engineering teams in a fast-paced, innovative environment.

Roles and Responsibilities

Full Stack Architecture: Design, develop, and maintain highly scalable, distributed, and fault-tolerant enterprise applications using the MERN stack (MongoDB, Express.js,

React, Node.js).

Distributed Systems: Architect and design large-scale distributed systems that handle high- volume, low-latency data processing.

Cloud Engineering: Implement and maintain cloud infrastructure solutions on GCP or AWS,ensuring high availability, scalability, and performance.

Knowledge Graphs and Databases: Design and optimize complex data models using Neo4j, vector databases, and other NoSQL solutions to manage interconnected data efficiently.

Enterprise Solutions: Architect and deliver cloud-native enterprise software solutions that meet enterprise-grade security, compliance, and performance requirements.

Data Structure & Algorithms (DSA): Lead by example in writing efficient, high-performance code and optimize software with a strong focus on algorithms, data structures, and system design principles.

Collaboration: Work with engineering, data science, and product teams to translate business requirements into scalable technical solutions.

Mentorship: Mentor junior engineers and foster a collaborative team environment.

Performance Optimization: Ensure system performance, scalability, and reliability throughcode reviews, optimizations, and best engineering practices.

Documentation & Best Practices: Maintain comprehensive architecture documentation and promote engineering best practices across teams.

Mandatory Requirements

Experience: 12+ years of full-stack development experience, with significant expertise

in building and architecting applications using the MERN stack (MongoDB, Express.js,

React, Node.js).

 Distributed Systems: Proven track record of architecting and implementing large-scale

distributed systems with a focus on reliability, scalability, and performance.

 Cloud Expertise: Extensive hands-on experience with cloud infrastructure (GCP or AWS),

with a deep understanding of cloud services such as compute, storage, networking, and

security.

 Database Systems: Expertise in NoSQL databases like MongoDB and graph databases like

Neo4j. Experience with vector databases for high-dimensional data processing.

 Knowledge Graphs: Hands-on experience in designing and working with knowledge graphs

for solving complex data relationships.

 Data Structures & Algorithms: Strong knowledge of DSA with practical experience in

solving complex technical challenges.

 Microservices Architecture: Experience in designing and developing microservices-based

architectures and ensuring high availability.

 DevOps ; Automation: Knowledge of DevOps practices (CI/CD), containerization (Docker), and orchestration (Kubernetes).

 Agile Methodologies: Experience with Agile development methodologies, including SCRUM, TDD, and iterative development.

Nice-to-Have Requirements

 Front-End Expertise: Advanced experience with React.js, with knowledge of modern front- end technologies (Next.js, Redux, TypeScript).

 Cloud Certifications: Google Cloud Professional Architect or Azure Certified Solutions Architect certifications.

 Data Engineering: Hands-on experience with data pipelines, ETL processes, and big data technologies (e.g., Apache Spark, Kafka).

 AI/ML Ops: Experience in deploying machine learning models using MLOps frameworks and automating ML pipelines.

 Graph Analytics: Experience in graph algorithms and analytics, with the ability to model and query complex relationships in a graph database.

 System Design: Experience in conducting system design reviews, providing insights into performance bottlenecks, scalability, and trade-offs.

 Security & Compliance: Knowledge of enterprise-level security protocols and data privacy compliance frameworks (e.g., SOC2, GDPR).

Leadership: Proven experience in leading cross-functional teams, setting technical roadmaps, and ensuring alignment between business and technical goals.

• Past experience in working with any product start-up is a plus.
• Proficiency in fundamental front end languages such as HTML, CSS, and JavaScript.
• Familiarity with JavaScript frameworks such as Angular JS, React, and others.
• Knowledge of Node.js and frameworks available for it such as Express (recommended).
• Good understanding of asynchronous request handling, partial page updates, and AJAX
• Understanding of REST Services.
• Experience with Redis.
• Familiarity with database technology such as MySQL, MongoDB and Elasticsearch.
• Proficient understanding of serverless programming.
• Proficient understanding of code versioning tools, such as Git.
• Good problem-solving skills.
• Attention to detail.

Job Purpose

We work in the latest technology, and our foundations are data structures, algorithms, solid logical reasoning, and mathematics. We are looking for very strong engineers who love coding, optimizing, and ensuring their code is the most efficient.

You will be involved with hardcore development. If you are an assembler of code or packages from different places to build something, you may not find our team to be the right fit.

You must be someone who can build anything from the ground up. Programming language should not be any barrier for you, as you should be able to pick up any programming language or underlying technology within a week.

Key Areas of Responsibility

Core development. Ready to participate in the designing, brainstorming, and development process. You must give sleepless nights to meet deadlines whenever required.

Desired Candidate Profile

Essential Skills 

• Reliable, Accountable, and Trustworthy
• Ability to understand software requirements based on a wireframe/program specification
• Familiarity with GoLang / PHP / Python / Java / C / C++ / Linux Shell and Scripting / HTML / CSS / JS / Node.js is a plus
• Effective communication skills to ensure smooth coordination of tasks with the Team Leader.
• Knowledge of MongoDB, MySQL, and PL/SQL is a plus
• Familiarity with ML, TensorFlow, and Keras is a plus
• Knowledge of web servers such as Apache, NGNIX, and the HTTP protocol is a plus.
• Knowledge of multi-process, threads, memory, and filesystem on Linux is desirable.
• Must Solve The Following

To consider you for the current opening, please make sure to understand the following question and solve it. A simple program in any programing language would do. If you cannot solve this, please do not apply.

Write a function foo(x) where foo(foo(x)) = -x (assume x to be an integer, and foo(x) has to be always real), any programming language would do. Before submitting the answers, please verify that the output of foo(foo(10)) should be -10 and foo(foo(-10)) should be 10.

The Senior Developer takes up the responsibility of delivery of assigned task with quality and within given timelines and delivers independently.

• Extensive knowledge of software development processes
  • Strong knowledge on different programming languages/technologies
  • Knowledge & experience of different coding practices
  • Quality deliverables meeting Project specific/Industry specific standards
  • Delivery within defined/agreed timelines

Java, Spring Boot, Microservices, JUNIT,
MySQL/Oracle, Javascript/Typescript,
HTML, Angular/ ReactJS