Big Data Developer

Location: Hybrid/ Remote

Type: Contract / Full‑Time

Experience: 5+ Years

Qualification: Bachelor’s or Master’s in Computer Science or a related technical field

Responsibilities:

• Architect & implement the RAG pipeline: embeddings ingestion, vector search (MongoDB Atlas or similar), and context-aware chat generation.
• Design and build Python‑based services (FastAPI) for generating and updating embeddings.
• Host and apply LoRA/QLoRA adapters for per‑user fine‑tuning.
• Automate data pipelines to ingest daily user logs, chunk text, and upsert embeddings into the vector store.
• Develop Node.js/Express APIs that orchestrate embedding, retrieval, and LLM inference for real‑time chat.
• Manage vector index lifecycle and similarity metrics (cosine/dot‑product).
• Deploy and optimize on AWS (Lambda, EC2, SageMaker), containerization (Docker), and monitoring for latency, costs, and error rates.
• Collaborate with frontend engineers to define API contracts and demo endpoints.
• Document architecture diagrams, API specifications, and runbooks for future team onboarding.

Required Skills

• Strong Python expertise (FastAPI, async programming).
• Proficiency with Node.js and Express for API development.
• Experience with vector databases (MongoDB Atlas Vector Search, Pinecone, Weaviate) and similarity search.
• Familiarity with OpenAI’s APIs (embeddings, chat completions).
• Hands‑on with parameters‑efficient fine‑tuning (LoRA, QLoRA, PEFT/Hugging Face).
• Knowledge of LLM hosting best practices on AWS (EC2, Lambda, SageMaker).

Containerization skills (Docker):

• Good understanding of RAG architectures, prompt design, and memory management.
• Strong Git workflow and collaborative development practices (GitHub, CI/CD).

Nice‑to‑Have:

• Experience with Llama family models or other open‑source LLMs.
• Familiarity with MongoDB Atlas free tier and cluster management.
• Background in data engineering for streaming or batch processing.
• Knowledge of monitoring & observability tools (Prometheus, Grafana, CloudWatch).
• Frontend skills in React to prototype demo UIs.

We are looking "Java Developer" for Reputed Client @ Coimbatore Permanent Role.

• Experience of more than 3 years in JAVA development is mandatory

• Ability to Design, Develop and Build JAVA web applications and conduct

• Software Analysis, Programming, testing and Debugging. 

• Good Analytical & Problem solving skills

• Should be a team player and able to lead teams of smaller sizes. 

• Provide timely update to Management on on-going development

• Back-end Developer.

Mandatory Skills:

• Core JAVA

• At least 1 Web frameworks (e.g., Struts and Spring)

• Service-oriented architecture/web services (SOAP/REST)

• Object-oriented programming (OOP) concepts and patterns. 

• Eclipse IDE

A tick against the following skill sets would surely strengthen the candidature

• Strong PHP, JS fundamentals
• PHP frameworks: PHP Laravel
• JS frameworks: Vue.JS
• RDBMS: MySQL, Mongo DB

Job Description:

At Helios Tech Labs we are looking for a Full Stack Developer with <2 - 5 yr Exp> to build and maintain functional websites and applications with highly skilled computer programmer who is comfortable with both front and back end programming.

To be successful in this role, you should have extensive experience building web-apps from scratch and in-depth knowledge of at least one of the following programming languages:

• JavaScript
• Java
• HTML
• CSS
• React
• Angular
• Objective C
• Scala
• Python
• C#
• C++
• PHP
• Perl
• Node JS
• Ruby (RoR)
  
  

Responsibilities:

• Identify user and system requirements for new websites and applications
• Designing user interactions on web pages.
• Developing back-end website applications.
• Creating servers and databases for functionality.
• Ensuring cross-platform optimization for mobile phones.
• Ensuring responsiveness of applications.
• Seeing through a project from conception to finished product.
• Meeting both technical and consumer needs.
• Staying abreast of developments in web applications and programming languages.
• Prioritize software development projects, set timelines, and assign tasks to team members.
• Write or review code for various applications.
• Run functionality testings and debug code.
• Oversee junior web developers and evaluate their performance.
• Liaise with designers to decide on UI/UX elements (like graphics and navigation buttons).

Design test plans, write test cases, review functional requirement documentation, and present test strategies for team review

• Conduct integration, regression, ad-hoc, and edge-case testing as part of release cycles
• Analyze complicated software system and design a strategy to test this system
• Understand and represent customer needs in product feedback discussions
• Participate in release management and post deployment testing
• Work closely with developer team to ensure proper test coverage is done
• Documentation and Release cycle

Job Profile Requirement : 

Experience of testing web applications, mobile applications.

• Knowledge of Responsive Testing
• Working knowledge of functional, GUI, Performance and Regression testing
• Strong knowledge of QA procedures, principles, and tools.
• Strong verbal and written (technical) communication skills to explain bugs and other issues identified and produce bug reports, documentation and feedback to both product owners and software developers.
• Ability to work in an environment of perfection and compliance to web standards and high design quality benchmarks.
• Strong organisational and time management skills - know what you need to do, and DO IT!

Ruby On Rails Developer

Job Description:

· Relevant experience in Rails Web Applications should at least have 2+ Years of Experience

· Good experience with front-end technologies such as HTML, CSS, JavaScript

· Strong experience with Ruby on Rails Frameworks, ActiveRecord, GEMs, CRON jobs, and schedulers

· Develop enhancements on ruby-based web applications

· Experience in working with GitHub integrations and Docker setups.

· Experience in maintaining and troubleshooting existing applications

· Develop and manage APIs, third-party API integrations

· Good knowledge of SQL Server