Trainee Full Stack Software Engineer

Junior Full-Stack Engineer (Python + Flutter + React JS)

Location: Vasanthnagar, Bangalore 560001 · On-site Type: Full-time Experience: 2–4 years Reports to: Tech Lead

About the role

We're looking for a hands-on Junior Full-Stack Engineer to join us on-site and work across our entire stack - building backend services in Python, web frontends in React JS, and cross-platform apps in Flutter. You'll be involved in the full development lifecycle: designing features, writing clean code, testing your own work, and helping ship reliable software. This is a great fit for someone who has a couple of years under their belt, wants to grow quickly, and enjoys owning features end to end.

You won't be siloed into one layer. One day you might be writing an API endpoint and its tests; the next, building the React screen - or the Flutter app - that consumes it.

What you'll do

●      Build and maintain backend services and APIs in Python (e.g. FastAPI / Django / Flask).

●      Develop responsive web frontends in React JS (components, hooks, state management).

●      Develop cross-platform mobile features using Flutter (Dart).

●      Write automated tests - unit, component, widget, and integration - and treat testing as part of building, not an afterthought.

●      Integrate frontend and backend: design and consume REST APIs, handle data flow, manage state.

●      Work with databases (schema design, queries, migrations) - e.g. PostgreSQL / MySQL.

●      Participate in code reviews, give and receive constructive feedback.

●      Use Git and a modern branching workflow; contribute to CI/CD pipelines.

●      Collaborate in an agile setup — standups, sprint planning, and iterative delivery.

●      Debug, profile, and fix issues across the stack.

●      Document your work so the next person (including future-you) can understand it.

What we're looking for

●      2–4 years of professional software development experience.

●      Solid working knowledge of Python and at least one backend framework.

●      Hands-on experience with React JS and modern JavaScript/TypeScript.

●      Hands-on experience with Flutter / Dart and building real apps (personal or professional projects count).

●      Comfortable writing tests and familiar with frameworks like pytest, Jest / React Testing Library, and Flutter's test / flutter_test.

●      Understanding of REST APIs, JSON, and client–server communication.

●      Proficiency with Git and collaborative version control.

●      Familiarity with relational databases and basic SQL.

●      Good communication skills and a willingness to learn, ask questions, and take feedback.

●      Able to work on-site at our Vasanthnagar, Bangalore office.

Nice to have (not required)

●      Experience with CI/CD tools (GitHub Actions, GitLab CI, etc.).

●      Exposure to cloud platforms (AWS / GCP / Azure) or Docker.

●      State management experience in React (Redux, Zustand, Context) and/or Flutter (Provider, Riverpod, Bloc).

●      Familiarity with async programming in Python.

●      A portfolio, GitHub profile, or published app you can share.

Why join us

●      Real ownership of features from day one, with mentorship to grow fast.

●      A modern engineering culture: code reviews, automated testing, CI/CD, and clean workflows.

●      Direct collaboration with the Tech Lead and a small senior team — short feedback loops, fast decisions.

 Please connect with me on my LinkedIn

https://www.linkedin.com/in/indrani-dutta-a9a65135/

Strong Software Engineer fullstack profile using NodeJS / Python and React

Mandatory (Experience) - Must have 6+ YOE in Software Development using Python OR NodeJS (For backend) & React (For frontend)

Mandatory (Core Skills 1): Must have strong experience in working on Typescript

Mandatory (Core Skills 2): Must have experience in message based systems like Kafka, RabbitMq, Redis

Mandatory (Core Skills 3): Databases - PostgreSQL & NoSQL databases like MongoDB

Mandatory (Company) - Product Companies Only

Mandatory (Education) - B.Tech or Dual degree (Btech and Mtech or Integrated Msc/MS) from Tier 1 Engineering Institutes. Candidates from other institutions will not be considered unless they come from top-tier product companies

Overview:

We're looking for a Full Stack Developer with strong backend expertise who can build,

manage, and scale AI-driven products end to end. You'll play a critical role in designing

scalable architectures, optimizing performance and cost, and building robust AI and agentic

systems.

Responsibilities

1. Architect and build scalable backend systems using FastAPI, PostgreSQL, and Redis.

2. Design, develop, and maintain AI-driven applications, integrating multiple LLMs, APIs,

and agentic frameworks.

3. Implement vector databases (pgvector, Qdrant, etc.) for RAG and AI memory systems.

4. Orchestrate multi-agent AI systems with LangChain/LangGraph, including function

calling, agent collaboration, and monitoring.

5. Build and integrate RESTful APIs for frontend and external use.

6. Manage DevOps workflows, including CI/CD, cloud deployments (AWS/GCP), server

scaling, and logging/monitoring (Sentry).

7. Optimize application cost, latency, and reliability, balancing speed with LLM call

efficiency and caching strategies.

8. Collaborate with product, design, and AI teams to translate business requirements into

high-performing tech.

9. Maintain documentation and ensure code quality with tests, reviews, and async-first

architecture.

10. Contribute to frontend development (React + TypeScript) when necessary, ensuring

seamless API integration and data visualization.

Requirements

Core Skills

• Strong proficiency in Python and FastAPI.

• Experience with PostgreSQL (including pgvector) and SQLAlchemy (async).

• Solid understanding of Redis, RQ (Redis Queue), and caching mechanisms.

• Proven experience integrating LLMs and AI APIs (OpenAI, Anthropic, etc.).

• Hands-on experience with LangChain / LangGraph, RAG pipelines, and agent

orchestration.

• Experience working with cloud platforms (AWS / GCP) and managing file storage (S3).

• Familiarity with frontend stacks (React, TypeScript, Tailwind, Zustand).

• Working knowledge of DevOps: Docker, CI/CD pipelines, deployment automation, and

observability tools (Sentry, Mixpanel, Clarity).

Bonus / Nice to Have

• Experience building agent monitoring dashboards or AI workflows.

• Prior experience in startup or product-based environments.

• Understanding of LLM cost optimization, token management, and function calling

orchestration.

• Familiarity with external API integrations like BrightData, Hunter.io, Adzuna, and Serper.

• Experience building scalable AI products (e.g., chatbots, AI copilots, data agents, or

automation tools).

Mindset

• Startup-ready: comfortable working in fast-paced, ambiguous environments.

• Deep curiosity about AI systems and automation.

• Strong sense of ownership and accountability for shipped products.

• Pragmatic and cost-conscious in architectural decisions.

• Excellent communication and documentation skills.

Job Description

Job Purpose 

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

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 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 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 plus
• Knowledge of multi-process, threads, memory, and filesystem on Linux is desirable

• Proficiency with fundamental front end languages such as HTML, CSS and JavaScript.
• Familiarity with JavaScript frameworks such as Angular JS, React.
• Proficiency with server side languages such as Python, Java, PHP and .Net.
• Familiarity with database technology such as MySQL, Oracle and MongoDB.
• Excellent verbal communication skills.

Role Description:

• Lister is actively engaged with client across digital transformation and engineering
• As a part of this engagement, you will be working with our clients on solution design and architecture, technology decisions, while co-ordinating technical efforts for the team
• As a Technical Lead:, You will need to collaborate with Solution Architects define technology
• roadmap, evaluate/recommend technologies, architect and design solutions, Work
• with other developers to oversee the development and implementation
• You will translate functional requirements from business stakeholders to the technical
• team for implementation
• You will need to troubleshoot design flaws and system bottlenecks
• You will have to be hands-on with code reviews and evaluate implementation for performance and scale
• Manage communication between our clients and internal teams in India and USA
• Coordinate with the offshore team to deliver projects across work streams, Identify risks, issues and blockers to progress and mitigate them for the team
• Rapidly gain an understanding of project requirements and drive execution
• Work with delivery team to ensure the highest quality of materials are being produced and all client needs are met.

Skills Required:

• Excellent understanding of backend and frontend components in the following stack: NodeJS, TypeScript, Javascript, ReactJS, multiple RDBMS and NoSQL databases like Postgres, MySQL, MongoDB Experience of working on AWS services (Lambda, Step functions, SQS, S3 SNS)
• Microservice design pattern is a must
• Experience in Docker, Kubernetes, containerization and CI/CD pipelines is preferable
• Experience in software development tools like Prettier, CodeCov, Snyk, etc..
• Excellent verbal and written communication skills; client facing and interpersonal skills; must be a listener, a presenter, and a people-person
• Experience in Designing scalable architecture systems for Node-based applications
• Ability to grasp complex implementations; Proven results of delivering client solutions
• Should have experience of working with offshore team
• Experience in working on large scale technology transformation projects for product companies is preferable
• Technology contributions to open source projects will be an added advantage
• Should have completed Certifications or training on AWS (AWS Solutions Architect), NodeJS, front-end frameworks.

Skills:

• Proficiency with JavaScript and HTML5
• Minimum 2+ years of hands-on experience with AngularJS and Angular Frameworks
• Experience with Java, JSON, Spring Boot and Hibernate 
• Experience with MYSQL databases
• Familiarity with Linux environments
• Experience with GIT 
• Hands on experience with AWS S3 is preferred
• Experience with web servers & application servers such as Apache and Nginx is good to have.

Responsibilities: 

• Design and develop client-side and server-side architecture
• Develop and manage well-functioning database
• Implementation of approved user interface
• Design and construction of REST APIs
• Server management and deployment for the relevant environment