Big Data Engineer

A BIT ABOUT US

Appknox is one of the top Mobile Application security companies recognized by Gartner and G2. A profitable B2B SaaS startup headquartered in Singapore & working from Bengaluru.

The primary goal of Appknox is to help businesses and mobile developers secure their mobile applications with a focus on delivery speed and high-quality security audits.

Appknox has helped secure mobile apps at Fortune 500 companies with major brands spread across regions like India, South-East Asia, Middle-East, US, and expanding rapidly. We have secured 300+ Enterprises globally.

We are a 60+ incredibly passionate team working to make an impact and helping some of the biggest companies globally. We work in a highly collaborative, very fast-paced work environment. If you have what it takes to be part of the team, we are excited and let’s speak further.

The Opportunity

Appknox AI is building next-generation AI-powered security analysis tools for mobile applications. We use multi-agent systems and large language models to automate complex security workflows that traditionally require manual expert analysis.

We're looking for an AI/ML Engineer who will focus on improving our AI system quality, optimizing prompts, and building evaluation frameworks. You'll work with our engineering team to make our AI systems more accurate, efficient, and reliable.

This is NOT a data scientist role. We need someone who builds production AI systems with LLMs and agent frameworks.

Key Focus:

Primary Focus: AI System Quality 

• Prompt Engineering: Design and optimize prompts for complex reasoning tasks
• Quality Improvement: Reduce false positives and improve accuracy of AI-generated outputs
• Evaluation Frameworks: Build systems to measure and monitor AI quality metrics
• Tool Development: Create utilities and tools that enhance AI capabilities

  Secondary Focus: Performance & Optimization 

• Cost Optimization: Implement strategies to reduce LLM API costs (caching, batching, model  selection)
•  Metrics & Monitoring: Track system performance, latency, accuracy, and cost
•  Research & Experimentation: Evaluate new models and approaches
•  Documentation: Create best practices and guidelines for the team

Experience

• 2–3 years of professional experience building AI-powered systems
• Previous hands-on work with agentic systems, autonomous workflows, or LLM-centric applications (not focused on model training)

Requirements:

• Design, build, and deploy autonomous AI agents using modern LLM frameworks
• Integrate agents with APIs, databases, and backend workflows
• Implement prompt strategies, tool/function calling, memory, and context management
• Strong understanding of vector databases and retrieval techniques (RAG use cases)
• Build production-ready systems with testing, monitoring, and scalable deployment practices
• Collaborate with cross-functional teams to ship reliable production features
• Strong Python and backend engineering skills
• Hands-on experience with agent frameworks such as LangChain, AutoGen, LlamaIndex
• Familiarity with observability and debugging tools (e.g., Arize, LangSmith, Langfuse dashboards)

Good to Have skill-set:

• Experience with multi-agent orchestration or planning frameworks
• Experience with online and offline evaluation of AI agents
• Exposure to cloud deployment and containerization (AWS/GCP/Azure, Docker)

 What We're NOT Looking For:

•   Only academic/tutorial LLM experience (we need production systems)
•   Pure ML research focus (we're not training foundation models)
•   Data analyst/BI background without engineering depth
•   No experience with LLM APIs or agent frameworks

  Our Tech Stack:

  AI/ML Infrastructure:

•   Agent Frameworks: LangChain, LangGraph
•   LLMs: Google Gemini (primary), with multi-model support
•   Observability: Langfuse, DeepEval
•   Vector Search: LanceDB, Tantivy
•   Embeddings: Hybrid approach (local + cloud APIs)

  Platform & Infrastructure:

•   Orchestration: Prefect 3.x, Docker, Kubernetes
•   Storage: S3-compatible object storage, PostgreSQL
•   Languages: Python 3.11+
•   Testing: pytest with parallel execution support

Work Expectations & Success Metrics:

Within 1 Month (Onboarding)

- Understand AI system architecture and workflows

- Review existing prompts and evaluation methods 

- Run analyses and identify improvement areas 

- Collaborate on initial optimizations

Within 3 Months (Initial Contributions)

- Own prompt engineering for specific components 

- Build evaluation datasets and quality metrics 

- Implement tools that extend AI capabilities 

- Contribute to performance optimization experiments

Within 6 Months (Independent Ownership)

- Lead quality metrics implementation and monitoring 

- Drive prompt optimization initiatives 

- Improve evaluation frameworks

- Research and prototype new capabilities

Within 1 Year (Expanded Scope)

- Mentor team members on best practices 

- Lead optimization projects (caching, batching, cost reduction)

- Influence architectural decisions 

- Build reusable libraries and internal frameworks

 Interview Process:

• Round 0 Interview - Profile Evaluation (15 min)
• Round 1 Interview - Take Home Assignment
• Round 2 Interview - Technical Deep-Dive (90 min)
• Round 3 Interview- Team Fit (45 min)
• Round 4 Interview- HR Round ( 30 min)

Why Join Appknox AI?

Impact & Growth

Work on cutting-edge AI agent systems that power real-world enterprise security. You’ll collaborate with experienced engineers across AI, security, and infrastructure while gaining deep expertise in LangGraph, agent systems, and prompt engineering. As we scale, you’ll have clear opportunities to grow into senior and staff-level roles.

Team & Culture

Join a small, focused product-engineering team that values code quality, collaboration, and knowledge sharing. We’re in a hybrid set-up - based out of Banaglore, flexible, and committed to a sustainable pace - no crunch, no chaos.

Technology

Built with a modern Python stack (3.11+, async, type hints, Pydantic) and the latest AI/ML tools including LangChain, LangGraph, DeepEval, and Langfuse. Ship production-grade features that make a real impact for customers.

Compensation & Benefits:

Competitive Package

We offer strong compensation designed to reward impact.

Flexibility & Lifestyle

Hybrid work setup and enjoy generous time off. You’ll get top-tier hardware and the tools you need to do your best work.

Learning & Development

Access a substantial learning budget, attend major AI/ML conferences, explore new approaches during dedicated research time, and share your knowledge with the team.

Health & Wellness

Comprehensive health coverage, fitness subscription, and family-friendly policies.

Early-Stage Advantages

Help shape the culture, influence product direction, and work directly with founders. Move fast, ship quickly, and see your impact immediately.

• Strong WordPress fullstack developer (frontend focused) Profile
• Mandatory (Experience 1): Must have 4+ YOE as a WordPress fullstack developement (80% Frontend, 20% backend)
• Mandatory (Experience 2): Must have 3+ YOE as a WordPress frontend developement using HTML, CSS, Javascript
• Mandatory (Experience 3): Must have 6 month+ experience in WordPress backend developement using php
• Mandatory (Skills 1): Strong knowledge of version control (Git) and collaborative code workflows
• Mandatory (Skills 2): Must have good communication skill

Preferred

• Preferred (Skills 1): Good knowledge of front-end frameworks/libraries (React, Angular, or Vue.js)

About the Role

We are looking for a motivated and detail-oriented Python Developer Intern to join our development team. This internship provides hands-on experience in real-world software development projects, backend systems, APIs, and automation tools.

You will work closely with senior developers and contribute to live projects, gaining practical exposure to modern development practices.

Key Responsibilities

• Assist in developing, testing, and maintaining Python-based applications
• Write clean, efficient, and reusable code
• Work on backend development and API integrations
• Participate in debugging and troubleshooting applications
• Collaborate with cross-functional teams (Design, QA, Data teams)
• Contribute to documentation and project reports
• Learn and apply best practices in software development

Required Skills & Qualifications

• Basic understanding of Python programming
• Familiarity with OOP concepts
• Knowledge of libraries/frameworks such as Django, Flask, or FastAPI (preferred but not mandatory)
• Basic understanding of databases (MySQL, PostgreSQL, or MongoDB)
• Good problem-solving skills
• Ability to work independently and in a team environment
• Strong communication skills

Preferred (Nice to Have)

• Knowledge of REST APIs
• Familiarity with Git/GitHub
• Understanding of HTML, CSS, and JavaScript
• Exposure to cloud platforms (AWS/Azure/GCP)

What You Will Gain

• Real-time project experience
• Mentorship from experienced developers
• Exposure to industry tools and workflows
• Internship Certificate upon successful completion
• Performance-based stipend (if applicable)
• Opportunity for full-time role based on performance

We are looking for a skilled Sitecore Developer with experience in Sitecore XP and XM Cloud (XMC). The ideal candidate should have strong technical knowledge of .NET technologies along with experience in headless CMS and modern frontend frameworks.

Required Skills (more the better):

• PHP, Laravel, MySQL/ MariaDB, HTML5, CSS3, JavaScript, AJAX/ Fetch, jQuery, Web services and APIs
• MVC framework, Design Patterns, Authentication, Eloquent, Providers, Middleware, Supervisor, Cron Jobs, Postman etc.
• Experience of entire software development lifecycle
• Project delivery experience and has handled clients directly

• Managed a team of at least 4 developers
• Client Interaction and requirements management

Additional Skills:

• Versioning tools such as Git, Bit Bucket, and concepts like branching
• DevOps: Knowledge of operating systems, hosting and deployment on cloud platforms like Amazon Web Services, Google Cloud, Azure etc will be added advantage

Responsibilities will include:

• Writing clean, well-designed code
• Debugging code and fixing bugs
• Ensuring code quality and security by following industry standards
• Managing code repositories and deploying builds
• Contributing to all phases of the development lifecycle
• Participating in team meetings and client meetings/ calls
• Learning new technologies

Why should I join Big Rattle?

Big Rattle Technologies specializes into development of Mobile and Web applications. Our clients include Fortune 5000 companies. Over the past 9 years, we have delivered multiple projects for clients from various industries like FMCG, Restaurants, Banking and Finance, Automobiles, Ecommerce, Television and Broadcast Agencies.

You will have an opportunity to get end-to-end exposure in software design and development of products, web applications and mobile applications. You will also have opportunities to participate in the decision-making process and take leadership roles as you grow in the organisation.

The company offers benefits like

• Healthcare coverage (including Covid-19 vaccination reimbursement)
• Technical certification fee reimbursements
• Technical training fee reimbursements
• 5-day work week
• Flexible working hours
• Hybrid working

Profile: AWS Data Engineer

Mode- Hybrid

Experience- 5+7 years

Locations - Bengaluru, Pune, Chennai, Mumbai, Gurugram

Roles and Responsibilities

• Design and maintain ETL pipelines using AWS Glue and Python/PySpark
• Optimize SQL queries for Redshift and Athena
• Develop Lambda functions for serverless data processing
• Configure AWS DMS for database migration and replication
• Implement infrastructure as code with CloudFormation
• Build optimized data models for performance
• Manage RDS databases and AWS service integrations
• Troubleshoot and improve data processing efficiency
• Gather requirements from business stakeholders
• Implement data quality checks and validation
• Document data pipelines and architecture
• Monitor workflows and implement alerting
• Keep current with AWS services and best practices

Required Technical Expertise:

• Python/PySpark for data processing
• AWS Glue for ETL operations
• Redshift and Athena for data querying
• AWS Lambda and serverless architecture
• AWS DMS and RDS management
• CloudFormation for infrastructure
• SQL optimization and performance tuning

Full-stack developer - Remote position

Are you...

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

A product manager, a team lead, two full-stack developers, one mobile developer, and a UX designer make up our product team. Who will serve as your mentor. We are looking for a developer who cares about how their code affects users so that we can work together.

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
• .Net Core experience
• Front end web in TypeScript & Angular
• 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

• 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 scale-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.

Key Responsibilities:

• Design and develop training materials for MERN Stack web application development.
• Deliver training sessions to individuals or groups in a classroom or online setting.
• Provide hands-on training on MongoDB, Express JS, React JS, and Node JS.
• Teach how to use No SQL Database, REST API, and how to connect REST API with front-end applications.
• Conduct assessments to evaluate trainees' understanding and progress.
• Provide feedback and support to trainees throughout the training process.
• Keep up-to-date with the latest trends and technologies in MERN Stack web application development.
• Collaborate with the project team to develop real-world scenarios and case studies for trainees.

Requirements:

• Minimum of 2 years of experience in MERN Stack web application development.
• Strong expertise in MongoDB, Express JS, React JS, and Node JS.
• Familiarity with asynchronous JS, No SQL Database, and REST API.
• Excellent communication and interpersonal skills.

Summary:

Smart Joules is looking for a Chief Technology Officer (CTO) to drive the evolution of our technology platform (DeJoule) to make continuous energy optimization simple and profitable at scale. DeJoule is designed on the latest IOT and web technologies to continuously identify and correct for hidden inefficiencies in dynamic energy systems such as air conditioning and compressed air. It 1) collects data in real time from buildings and factories, 2) analyses real time and historical data using heuristic and machine learning algorithms to find hidden energy inefficiencies and optimum set points, and 3) continuously adjusts (controls) set points of various equipment installed in buildings and factories to minimize energy use. We are looking to build new capabilities in data-driven intelligence, user delight, universal compatibility and continuous optimization through full automation.

You will engage deeply with Smart Joules’ leadership and management team and customers to connect our software and its capabilities to our mission. The technology we build together will save 30% or more of the energy consumed in India’s most prominent buildings and factories that stand today and are yet to be built, and will displace the largest multi-nationals as the highest selling automation product in the Indian and other developing markets.

If you are passionate about stopping climate change, a believer in collaborative and multi-disciplinary innovation, capable of building and leading young and passionate technology teams, an expert in IoT and ready to commit yourself wholeheartedly to build the company that will manage the largest number of Joules in India by 2025, we’d like to meet you.

Overall Responsibilities:

• Build DeJoule into a product that can outcompete any other globally on automatic and continuous performance optimization at scale, user engagement and cost.
• Recruit, motivate, train and lead India’s #1 energy tech team.
• Strengthen the company culture around innovation and excellence so that DeJoule consistently remains ahead of the pack.
• Develop the company’s image as a global leader in the digital energy transition.

The Right Candidate:

• Is ready and hungry to work on the defining project of their professional career.
• Is able to cite specific experiences from their personal life and professional career where they have demonstrate that they have the ability to make tough decisions, to fight and win.
• Has 7+ years of experience building IOT & cloud technology platforms with mastery in System Design and Architecture, Database Administration, Data Structuring and Algorithms, Javascript frameworks (Angular.js, Node.js), AWS managed services (SNS,SQS, IoT core, Dynamo DB, Lambdas, Kinesis and others), Python and related technologies.
• Is humble and collaborative, with a deep-seated ambition to have a significant impact at a global scale.
• Has worked in a start-up or in start-up-like conditions with volatility, uncertainty, complexity and ambiguity.

About Smart Joules:

Smart Joules is India’s leading energy efficiency company on a mission to stop climate change by making continuous energy optimization simple and profitable at scalable for buildings and factories. We have pioneered the servitization model in the energy efficiency space in India and established leadership position in the healthcare industry with long-term projects in almost all states. Our clients are saving up to 70% in energy costs and have modernized their facilities with industry-leading technologies without making any up-front investments.

Led by an MIT/Berkeley Alumnus, an award-winning engineer from the Indian Navy, and a financial wizard, our team of 100+ professionals has a comprehensive set of capabilities spanning project development, design, financing, execution, cutting-edge IOT technologies, analytics and operations. We have won national and international awards, including recognition as a “Champion of Change” by the Prime Minister’s Office.

Our financial supporters include Asian Development Bank, Sangam Ventures, Max Ventures & Industries, Raintree Family Office, Echoing Green, Harvard University, TATA Trusts, David & Lucile Packard Foundation, TATA Cleantech Capital, Yes Bank, World Bank, SIDBI and some of India’s most prominent business families.

We like to work hard and play hard. Inspired by MIT’s motto “Mens et Manus”, we believe in using our minds and hands to develop and utilize technology for practical application. If you are curious to learn more about us, visit our LinkedIn page and the links we have posted.