Appiness Interactive

Job Description – Backend Python Developer(Mid-Level) 

📍 Location: Mumbai/Gurgaon |  Full-time

Backend Python Developer

Role Overview

We are seeking a skilled Backend Python Developer to design, develop, and maintain backend services, APIs, and integrations that power our AI-driven automation solutions.

You will collaborate closely with senior engineers, AI/ML teams, and frontend developers to build scalable, high-performance systems. This role is ideal for professionals with solid backend experience who are eager to deepen their expertise in Python, cloud technologies, and AI-based applications.

Key Responsibilities

• Develop and maintain backend APIs, services, and system integrations using Python
• Collaborate on system design and architecture discussions with senior engineers
• Write clean, scalable, and well-documented code following best practices
• Ensure performance, scalability, and reliability in cloud environments
• Design and manage SQL/NoSQL databases for structured and unstructured data
• Support integration of AI/ML models into production workflows
• Participate in code reviews, unit testing, and debugging
• Contribute to CI/CD pipelines, containerization, and DevOps processes

Required Skills & Qualifications

• 3–5 years of experience in backend development
• Strong proficiency in Python
• Hands-on experience with frameworks such as FastAPI, Flask, or Django
• Experience building and consuming REST APIs (GraphQL is a plus)
• Strong database knowledge: PostgreSQL, MySQL, MongoDB, or Redis
• Familiarity with cloud platforms (AWS, GCP, or Azure)
• Hands-on experience with Docker and Kubernetes
• Strong understanding of OOP, data structures, algorithms, and design patterns

Preferred Skills

• Exposure to AI/ML workflows or a strong interest in learning
• Experience with message brokers such as Kafka, RabbitMQ, or Celery
• Knowledge of asynchronous programming (asyncio, Celery, etc.)
• Experience with unit testing frameworks (PyTest, unittest)
• Understanding of API security and authentication (OAuth2, JWT)

What We Offer

• Competitive compensation with growth opportunities
• Opportunity to work on AI-first automation products used globally
• Mentorship from experienced senior engineers
• Flexible work environment
• Continuous learning support in Python, Cloud, and AI/Automation technologies

Required Skills & Qualifications

● Strong hands-on experience with LLM frameworks and models, including LangChain,

OpenAI (GPT-4), and LLaMA

● Proven experience in LLM orchestration, workflow management, and multi-agent

system design using frameworks such as LangGraph

● Strong problem-solving skills with the ability to propose end-to-end solutions and

contribute at an architectural/system design level

● Experience building scalable AI-backed backend services using FastAPI and

asynchronous programming patterns

● Solid experience with cloud infrastructure on AWS, including EC2, S3, and Load

Balancers

● Hands-on experience with Docker and containerization for deploying and managing

AI/ML applications

● Good understanding of Transformer-based architectures and how modern LLMs work

internally

● Strong skills in data processing and analysis using NumPy and Pandas

● Experience with data visualization tools such as Matplotlib and Seaborn for analysis

and insights

● Hands-on experience with Retrieval-Augmented Generation (RAG), including

document ingestion, embeddings, and vector search pipelines

● Experience in model optimization and training techniques, including fine-tuning,

LoRA, and QLoRA

Nice to Have / Preferred

● Experience designing and operating production-grade AI systems

● Familiarity with cost optimization, observability, and performance tuning for

LLM-based applications

● Exposure to multi-cloud or large-scale AI platforms

Location : Bengaluru, India

Type : Full-time

Experience :4-7 Years

Mode :Hybrid

The Role

We're looking for a Full Stack Engineer who thrives on building high-performance applications at scale. You'll work across our entire stack—from optimizing PostgreSQL queries on 140M+ records to crafting intuitive React interfaces. This is a high-impact role where your code directly influences how sales teams discover and engage with prospects worldwide.

What You'll Do

• Build and optimize REST APIs using Django REST Framework handling millions of records
• Design and implement complex database queries, indexes, and caching strategies for PostgreSQL
• Develop responsive, high-performance front-end interfaces with Next.js and React
• Implement Redis caching layers and optimize query performance for sub-second response times
• Design and implement smart search/filter systems with complex logic
• Collaborate on data pipeline architecture for processing large datasets
• Write clean, testable code with comprehensive unit and integration tests
• Participate in code reviews, architecture discussions, and technical planning

Required Skills

• 4-7 years of professional experience in full stack development
• Strong proficiency in Python and Django/Django REST Framework
• Expert-level PostgreSQL knowledge: query optimization, indexing, EXPLAIN ANALYZE, partitioning
• Solid experience with Next.js, React, and modern JavaScript/TypeScript
• Experience with state management (Zustand, Redux, or similar)
• Working knowledge of Redis for caching and session management
• Familiarity with AWS services (RDS, EC2, S3, CloudFront)
• Understanding of RESTful API design principles and best practices
• Experience with Git, CI/CD pipelines, and agile development workflows

Nice to Have

• Experience with Elasticsearch for full-text search at scale
• Knowledge of data scraping, ETL pipelines, or data enrichment
• Experience with Celery for async task processing
• Familiarity with Tailwind CSS and modern UI/UX practices
• Previous work on B2B SaaS or data-intensive applications
• Understanding of security best practices and anti-scraping measures

Our Tech Stack

Backend

Python, Django REST Framework

Frontend

Next.js, React, Zustand, Tailwind CSS

Database

PostgreSQL 17, Redis

Infrastructure

AWS (RDS, EC2, S3, CloudFront), Docker

Tools

GitHub, pgBouncer

Why Join Us

• Work on a product processing 140M+ records—real scale, real challenges
• Direct impact on product direction and technical decisions
• Modern tech stack with room to experiment and innovate
• Collaborative team environment with a focus on growth
• Competitive compensation and flexible hybrid work model

Job Description: Telecaller / Pre-Sales Executive

Role: Telecaller / Pre-Sales Executive

Experience: 0–3 years

Location: Bangalore

Industry: IT Services / Digital / B2B

Role Objective

To generate, qualify, and nurture leads through outbound and inbound calling, supporting the

sales and business development team.

Key Responsibilities

● Make outbound calls to prospective clients using provided databases

● Handle inbound inquiries and explain company services clearly

● Qualify leads based on defined criteria (requirement, budget, timeline)

● Schedule meetings/demos for the Business Development team

● Follow up with leads via calls, WhatsApp, and email

● Maintain accurate lead data and call logs in CRM or tracking sheets

● Meet daily/weekly calling and lead qualification targets

● Handle basic objections and provide standard information

● Coordinate with sales and marketing teams for smooth lead handover

● Share feedback and market insights gathered from calls

Required Skills & Qualifications

● Excellent verbal communication skills

● Basic understanding of sales and customer handling

● Ability to handle rejection and pressure

● Familiarity with CRM tools and MS Excel

● Target-driven and disciplined approach

KPIs

● Number of calls per day

● Qualified leads generated

● Meetings/demos scheduled

● Lead conversion ratio (to BD team)

Job Description :

We are looking for an experienced DevOps Engineer with strong expertise in Azure DevOps, CI/CD pipelines, and PowerShell scripting, who has worked extensively with .NET-based applications in a Windows environment.

Mandatory Skills

• Strong hands-on experience with Azure DevOps
• GIT version control
• CI/CD pipelines (Classic & YAML)
• Excellent experience in PowerShell scripting
• Experience working with .NET-based applications
• Understanding of Solutions, Project files, MSBuild
• Experience using Visual Studio / MSBuild tools
• Strong experience in Windows environment
• End-to-end experience in build, release, and deployment pipelines

Good to Have Skills

• Terraform (optional / good to have)
• Experience with JFrog Artifactory
• SonarQube integration knowledge

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

Position Overview: The Lead Software Architect - Python & Data Engineering is a senior technical leadership role responsible for designing and owning end-to-end architecture for data-intensive, AI/ML, and analytics platforms, while mentoring developers and ensuring technical excellence across the organization. 

Key Responsibilities: 

• Design end-to-end software architecture for data-intensive applications, AI/ML pipelines, and analytics platforms
• Evaluate trade-offs between competing technical approaches 
• Define data models, API approach, and integration patterns across systems 
• Create technical specifications and architecture documentation 
• Lead by example through production-grade Python code and mentor developers on engineering fundamentals 
• Conduct design and code reviews focused on architectural soundness 
• Establish engineering standards, coding practices, and design patterns for the team 
• Translate business requirements into technical architecture 
• Collaborate with data scientists, analysts, and other teams to design integrated solutions 
• Whiteboard and defend system design and architectural choices 
• Take responsibility for system performance, reliability, and maintainability 
• Identify and resolve architectural bottlenecks proactively 

Required Skills:  

• 8+ years of experience in software architecture and development  
• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field 
• Strong foundations in data structures, algorithms, and computational complexity 
• Experience in system design for scale, including caching strategies, load balancing, and asynchronous processing  
• 6+ years of Python development experience 
• Deep knowledge of Django, Flask, or FastAPI 
• Expert understanding of Python internals including GIL and memory management 
• Experience with RESTful API design and event-driven architectures (Kafka, RabbitMQ) 
• Proficiency in data processing frameworks such as Pandas, Apache Spark, and Airflow 
• Strong SQL optimization and database design experience (PostgreSQL, MySQL, MongoDB)  Experience with AWS, GCP, or Azure cloud platforms 
• Knowledge of containerization (Docker) and orchestration (Kubernetes) 
• Hands-on experience designing CI/CD pipelines Preferred (Bonus) 

Skills: 

• Experience deploying ML models to production (MLOps, model serving, monitoring) Understanding of ML system design including feature stores and model versioning 
• Familiarity with ML frameworks such as scikit-learn, TensorFlow, and PyTorch  
• Open-source contributions or technical blogging demonstrating architectural depth 
• Experience with modern front-end frameworks for full-stack perspective

Position Overview: Front-End Developer (Next.js)

We are seeking an experienced Front-End Developer with strong hands-on expertise in Next.js and React.js. The ideal candidate will build and maintain scalable, responsive web applications using modern front-end technologies and best practices in performance, SEO, and rendering techniques.

Key Responsibilities

• Develop and maintain responsive, scalable web applications using React.js and Next.js
• Implement CSR, SSR, and SSG using Next.js best practices
• Build reusable, modular UI components following clean front-end architecture
• Integrate and manage REST APIs for data retrieval, caching, and error handling (React Query or similar)
• Optimize applications for performance, SEO, and accessibility
• Collaborate with backend engineers and UI/UX designers to deliver high-quality user interfaces
• Debug, test, and document code to ensure maintainability and scalability

Required Skills

• Strong knowledge of Next.js fundamentals (routing, rendering techniques, API routes)
• Proficiency with React Hooks and understanding of component lifecycle
• Solid experience integrating REST APIs and handling errors effectively
• Familiarity with state management libraries such as React Query, Redux, or Zustand
• Strong skills in JavaScript (ES6+), HTML5, and CSS3
• 7–10 years of front-end development experience

Job Summary

We are seeking an experienced React Native Developer with hands-on expertise in developing and optimizing tvOS applications. The ideal candidate will have strong technical skills in React Native, a deep understanding of mobile app architecture, and prior experience with tvOS and focus navigation on Apple TV.

Key Responsibilities

• Develop and maintain React Native applications for iOS and Android platforms.
• Leverage native APIs for deep integrations across both platforms.
• Diagnose and fix bugs and performance bottlenecks for a native-like experience.
• Engage with the open-source community to encourage and contribute to key software fixes and improvements.
• Write and maintain clean, well-documented, and testable code.
• Create and execute automated tests to ensure product quality.
• Transition existing React web applications to React Native.
• Implement pixel-perfect UI designs and smooth animations for enhanced user experience.
• Integrate third-party APIs and SDKs.
• Ensure consistent UX across Android, iOS, and tvOS platforms.
• Release and manage applications on the Apple App Store and Google Play Store.
• Write performant applications optimized for low-end devices.
• Utilize debugging and development tools such as React DevTools and Charles Proxy.

Required Skills & Qualifications

• 5+ years of experience developing React Native applications.
• Strong proficiency in JavaScript, TypeScript, or ClojureScript (ES6+ syntax).
• Solid understanding of object-oriented programming principles.
• Ability to write clean, maintainable, and well-documented code.
• Expertise in managing third-party dependencies and resolving dependency conflicts.
• Experience with native build tools such as Xcode and Gradle.
• Good understanding of REST APIs, document request models, and offline storage mechanisms.
• Familiarity with automated testing suites and CI/CD pipelines.
• Strong skills in architecting and building React Native applications with clean architecture.
• Experience maintaining UX consistency across multiple platforms.

Preferred / Nice-to-Have Skills

• Experience with react-native-tvos and focus-navigation for Apple TV / tvOS.
• Knowledge of AVPlayer (iOS) and ExoPlayer (Android).

Duties and responsibilities

● Improve organic search results for desktop and mobile sites on all major search engines

● Provide SEO analysis and recommendations in coordination with elements and structure

of websites and web

● Provide recommendations and execute strategies for content development in

coordination with SEO goals – general and keyword specific

● Administer search engine programs (XML sitemaps, Google Analytics, webmaster tools)

for purposes of diagnostic reporting on client projects

● Promote both off-page and on-page activities and also the interactions that build ranking,

profile and traffic

● Analyse and understand web analytics dashboards and draw inferences which helps to

attain the business goals

● Monitor and evaluate search results and search performance across the major search

channels, need to have good knowledge in current search trends

● Communication to team and management on project development, timelines, and results

● Work closely with the other team members to meet client goals

Experiences (1 - 3 years)

● Proficiency in Google sheet, MS Excel, PowerPoint, and Word

● Experience with website analysis using a variety of analytics tools including Google

Analytics as well as internal reporting tool

● Experience working with popular keyword tools for SEO

● Any Graduate with relevant experience.

● Basic knowledge in HTML Coding will be an added advantage

Skills and Expertise

● Basic SEM knowledge

● Basic HTML Coding

● Good Analytical Mind and Skills

● Keywords Strategy

● Tracking and Analysing

● Creating Reports (Google Sheet/ Microsoft 360)

● Good communication skills