MEAN Full stack developer

🚀 We’re Hiring: Senior Full Stack Developer (Python FastAPI & React.js)

📍 Location: Chennai, Tamil Nadu (On-site)

🧠 Experience: 5+ Years

🕒 Employment Type: Full-time

About Lumera Software Solutions

Lumera Software Solutions is a product development–focused organization building technology solutions for world-class supply chain leaders. Our products help global enterprises optimize, automate, and gain real-time visibility across complex supply chain operations.

We design and build scalable, high-performance software used by industry-leading supply chain organizations worldwide, collaborating closely with global stakeholders to solve real, high-impact problems.

Our teams work closely across engineering, design, and product to deliver reliable, well-architected solutions, while collaborating with a globally distributed team across regions and time zones.

🔥 Why This Role Is Different

This role is designed for senior engineers and architect-leaning developers who want to take technical ownership and influence how complex, enterprise-grade systems are built.

You will be building mission-critical product features used by world-class supply chain leaders, working on problems that demand strong system design, scalability, and long-term architectural thinking.

This is a core product development role, not a maintenance or support-driven position.

💼 What You’ll Do

• Act as a senior individual contributor, owning complex, backend-heavy features end-to-end
• Design and develop scalable, production-grade backend services and APIs using Python & FastAPI
• Build and maintain front-end components using React.js, with primary focus on backend-driven functionality
• Participate in system design, architecture reviews, and technical decision-making
• Apply AI-assisted development tools to improve development speed, testing, and code quality
• Collaborate with a globally distributed engineering and product team while working from our Chennai office
• Work closely with databases to design efficient schemas and optimize queries
• Apply strong understanding of DevOps concepts including CI/CD, containerization, deployment, monitoring, and observability
• Mentor engineers through code reviews and design discussions
• Drive improvements in performance, reliability, security, and scalability

🛠️ What We’re Looking For

• 5+ years of hands-on experience in full stack roles with a backend-heavy focus
• Strong proficiency in Python with FastAPI, including API design and performance considerations
• Solid experience building and consuming RESTful APIs at scale
• Good working experience with React.js, JavaScript (ES6+), HTML, and CSS
• Strong understanding of backend architecture, system design, and data modeling
• Good understanding of DevOps concepts such as CI/CD pipelines, Docker, cloud deployments, and monitoring
• Ability to make sound technical trade-offs with long-term maintainability in mind
• Experience mentoring developers or leading by technical example
• Comfortable working in a focused, work-from-office (WFO) product development environment
• Educational Qualification: B.E / B.Tech (Computer Science or related fields)**

➕ Nice to Have (Not Mandatory)

• Experience with cloud platforms (AWS / Azure / GCP)
• Familiarity with Docker and containerization
• Experience setting up or working with CI/CD pipelines
• Exposure to product development teams or building in-house products
• Exposure to AI/ML concepts, data pipelines, or integrating AI services into products
• Experience using AI developer tools to enhance productivity

🎯 What We Offer

• Competitive salary based on skills and impact
• High ownership and visibility of your work
• Fast learning curve with real technical challenges
• A collaborative, no-nonsense engineering culture
• Long-term growth as the company scales

✨ Lumera Software Solutions is an equal opportunity employer. We value talent, ownership, and diversity.

Responsibilities:

 Leads technical design and development.

 Ensure high-quality, scalable, and testable application architecture through

rigorous design leadership and best practices.

 Owning complex features, writing quality code and tests, mentoring engineers,

and championing quality standards within a CI/CD environment.

Experience and Expertise Requirement :

 8+ years related software development experience.

 Proficiency in Java, SQL, Mongo and Angular, JavaScript, TypeScript, NodeJS.

 Working experience in Angular 6+

JOB DESCRIPTION

 Expertise in Gen AI frameworks, Lang Chain ecosystem, Hugging Face,

LLM capabilities, AI cost optimization

 Very strong programming skills and should be able to write optimized,

modular code.

 Should have good communication, and interpersonal skills.

 Ability to work in faced-paced agile environment and cope with the speed of

scrum process.

 Strong problem-solving skills and attention to detail.

 Traits to take ownership of the components and deliver work that including

development, unit testing, and bug-fixing.

 Deep understanding of design principles

 Strong architecture knowledge with experience in HLD + LLD

 Very strong debugging & problem-solving skill

 Ownership mindset and ability to lead design

 Ability to mentor other engineers

 Strong coding excellence (clean code, SOLID, modular design)

 Hands-on across Java, Node, Angular, SQL, Mongo

 GenAI stack proficiency & integration patterns

 Debugging proficiency is required across:

 Distributed services

 API integrations

 UI state management

 Query performance issues

 AI pipeline debugging (Lang Chain, LLM cost optimization, prompt

chains)

JOB DESCRIPTION

1.Supervisory Responsibility

This position may have supervisory responsibilities.

Educational Qualification

 Bachelor’s degree in computers or software engineering or

 Master’s degree in computer science, Computer Applications

We're looking for an experienced Full-Stack Engineer who can architect and build AI-powered agent systems from the ground up. You'll work across the entire stack—from designing scalable backend services and LLM orchestration pipelines to creating frontend interfaces for agent interactions through widgets, bots, plugins, and browser extensions.

You should be fluent in modern backend technologies, AI/LLM integration patterns, and frontend development, with strong systems design thinking and the ability to navigate the complexities of building reliable AI applications.

Note: This is an on-site, 6-day-a-week role. We are in a critical product development phase where sthe peed of iteration directly determines market success. At this early stage, speed of execution and clarity of thought are our strongest moats, and we are doubling down on both as we build through our 0→1 journey.

WHAT YOU BRING:

You take ownership of complex technical challenges end to end, from system architecture to deployment, and thrive in a lean team where every person is a builder. You maintain a strong bias for action, moving quickly to prototype and validate AI agent capabilities while building production-grade systems. You consistently deliver reliable, scalable solutions that leverage AI effectively — whether it's designing robust prompt chains, implementing RAG systems, building conversational interfaces, or creating seamless browser extensions.

You earn trust through technical depth, reliable execution, and the ability to bridge AI capabilities with practical business needs. Above all, you are obsessed with building intelligent systems that actually work. You think deeply about system reliability, performance, cost optimization, and you're motivated by creating AI experiences that deliver real value to our enterprise customers.

WHAT YOU WILL DO:

Your primary responsibility (95% of your time) will be designing and building AI agent systems across the full stack. Specifically, you will:

• Architect and implement scalable backend services for AI agent orchestration, including LLM integration, prompt management, context handling, and conversation state management.
• Design and build robust AI pipelines — implementing RAG systems, agent workflows, tool calling, and chain-of-thought reasoning patterns.
• Develop frontend interfaces for AI interactions including embeddable widgets, Chrome extensions, chat interfaces, and integration plugins for third-party platforms.
• Optimize LLM operations — managing token usage, implementing caching strategies, handling rate limits, and building evaluation frameworks for agent performance.
• Build observability and monitoring systems for AI agents, including prompt versioning, conversation analytics, and quality assurance pipelines.
• Collaborate on system design decisions around AI infrastructure, model selection, vector databases, and real-time agent capabilities.
• Stay current with AI/LLM developments and pragmatically adopt new techniques (function calling, multi-agent systems, advanced prompting strategies) where they add value.

BASIC QUALIFICATIONS:

• 4–6 years of full-stack development experience, with at least 1 year working with LLMs and AI systems.
• Strong backend engineering skills: proficiency in Node.js, Python, or similar; experience with API design, database systems, and distributed architectures.
• Hands-on AI/LLM experience: prompt engineering, working with OpenAI/Anthropic/Google APIs, implementing RAG, managing context windows, and optimizing for latency/cost.
• Frontend development capabilities: JavaScript/TypeScript, React or Vue, browser extension development, and building embeddable widgets.
• Systems design thinking: ability to architect scalable, fault-tolerant systems that handle the unique challenges of AI applications (non-determinism, latency, cost).
• Experience with AI operations: prompt versioning, A/B testing for prompts, monitoring agent behavior, and implementing guardrails.
• Understanding of vector databases, embedding models, and semantic search implementations.
• Comfortable working in fast-moving, startup-style environments with high ownership.

PREFERRED QUALIFICATIONS:

• Experience with advanced LLM techniques: fine-tuning, function calling, agent frameworks (LangChain, LlamaIndex, AutoGPT patterns).
• Familiarity with ML ops tools and practices for production AI systems.
• Prior work on conversational AI, chatbots, or virtual assistants at scale.
• Experience with real-time systems, WebSockets, and streaming responses.
• Knowledge of browser automation, web scraping, or RPA technologies.
• Experience with multi-tenant SaaS architectures and enterprise security requirements.
• Contributions to open-source AI/LLM projects or published work in the field.

WHAT WE OFFER:

• Competitive salary + meaningful equity.
• High ownership and the opportunity to shape product direction.
• Direct impact on cutting-edge AI product development.
• A collaborative team that values clarity, autonomy, and velocity.

Job Title : MERN Stack Developer with Blockchain Expertise

Job Description :

We are looking for a dynamic and skilled MERN Stack Developer with a specialization in Blockchain to join our team. As a Blockchain MERN Stack Developer, you will be instrumental in crafting and implementing blockchain solutions, utilizing the MERN stack for both front-end and back-end development. Your role will contribute to the creation of secure, scalable, and decentralized applications.

Responsibilities :

- Develop and design applications based on blockchain technology using the MERN stack.

- Implement and integrate smart contracts and decentralized solutions into the development process.

- Collaborate with cross-functional teams to define project requirements and specifications.

- Create and maintain high-quality, reusable, and reliable code.

- Ensure the application of secure coding practices to uphold the integrity of blockchain solutions.

- Utilize front-end technologies, particularly React, to build engaging and user-friendly interfaces.

- Work closely with UX/UI designers to implement visually appealing and intuitive interfaces.

- Participate in code reviews, offering constructive feedback to team members.

- Identify and troubleshoot issues related to blockchain and MERN stack development.

- Stay informed about the latest trends, tools, and emerging technologies in blockchain.

Requirements :

- Proven experience as a Full Stack Developer with a specific focus on blockchain technology.

- Proficiency in the MERN stack (MongoDB, Express.js, React, Node.js).

- Experience with major blockchain platforms such as Ethereum, Hyperledger, or similar.

- Solid understanding of smart contract development and implementation.

- Familiarity with decentralized application (dApp) development.

- Knowledge of cryptography and principles of blockchain security.

- Familiarity with version control systems, such as Git.

- Strong problem-solving and analytical skills.

- Excellent collaboration and communication skills.

- Bachelor's degree in Computer Science or a related field (or equivalent work experience).

If you are passionate about both blockchain technology and MERN stack development and thrive in an innovative environment, we encourage you to apply or share your CV and contribute to our cutting-edge projects.

Candidates serving notice period & immediately available can apply, should join within 7 days  Urgent requirement

.

About Us:

We’re looking to hire someone to help scale Machine Learning and NLP efforts at Episource. You’ll work with the team that develops the models powering Episource’s product focused on NLP driven medical coding. Some of the problems include improving our ICD code recommendations , clinical named entity recognition and information extraction from clinical notes.

This is a role for highly technical engineers who combine outstanding oral and written communication skills, and the ability to code up prototypes and productionalize using a large range of tools, frameworks, and languages. Most importantly they need to have the ability to autonomously plan and organize their work assignments based on high-level team goals.

What you will do at Episource:

You will be responsible for setting an agenda to develop and build machine learning platforms that positively impact the business, working with partners across the company including operations and engineering. You will be working closely with the machine learning team to design and implement back end components and services. You will be evaluating new technologies, enhancing the applications, and providing continuous improvements to produce high quality software.

Required Skills:

• Strong background in analytics, BI or data science deployments is preferable with 2-6 years of experience

• Knowledge of React/Vue, HTML, CSS

• Experience building and consuming APIs 

• Experience with MySQL, MongoDB and MEAN stack 

• Knowledge and experience with serverless architectures is a plus

• Hands-on experience with AWS or any major cloud service provider for deploying solutions

• Experience with Docker or Kubernetes in deploying solutions on the cloud

• Hands-on experience Python, Apache Spark & Big Data platforms to manipulate large-scale structured and unstructured datasets.

• Fluent in data fundamentals: SQL, data manipulation using a procedural language, statistics, experimentation, and modeling

• • 3+ years of web development experience using LAMP stack or Node.js or similar web technologies 
• • Well-versed with front-end code in HTML5, CSS3, Javascript, React.js with familiarity in various frameworks and template languages 
• • Possess strong understanding of Object-Oriented Programming, especially in PHP 
• • Proficient with database design, optimization and tuning in MySQL or MongoDB 
• • Experience in design patterns, unit testing, automation techniques (Selenium WebDriver) 
• • Exposure to Amazon Web Services (EC2, S3, EBS, RDS, SQS, Redshift, etc.) 
• • Exposure to Docker and Kubernetes 
• • Exposure to collaborating tools like GitHub, JIRA, Confluence 
• • Experience in frameworks such as Symfony 2, Express.js, or proven ability to learn on the job 
• • Experience in Microservices and REST architecture 
• • Exposure to Scrum methodology and XP technical practices such as unit testing, pair programming, test-driven development, continuous integration or continuous delivery 
• • Self-motivated, fast learner, detail-oriented, team player and a sense of humor