
Backend Developer
š Noida | š Full-Time | š§ Experience: 2ā3 Years
The Mission
We aren't building traditional backend systems ā we're powering the infrastructure behind Agentic Intelligence. TestMu AI is building the world's first AI-native platform where backend systems don't just serve requests, they enable autonomous decision-making, execution, and scale.
The name "TestMu" comes from our community conference. Our users and team aren't an audience ā they're the heartbeat of what we build. We believe AI augments human potential. It doesn't replace it.
You'll be building the core backend systems that power AI-driven workflows ā ensuring high performance, scalability, and reliability at every layer.
The Pillars of Impact
š 1. Core Backend & System Architecture (50%)
- Build and scaleĀ high-performance backend services and APIs
- Design efficientĀ database schemas, query optimization, and data flows
- Write clean, logical, production-grade code (Python, Golang, or similar)
- Own system performance ā latency, throughput, and reliability
āļø 2. Backend for AI Systems (30%)
- Develop backend systems supportingĀ AI agents and autonomous workflows
- HandleĀ large-scale data processing, async tasks, and event-driven systems
- Integrate backend infrastructure seamlessly with AI/ML components
š§ 3. Scalability & Distributed Systems (20%)
- Contribute toĀ microservices architecture and service decomposition
- BuildĀ fault-tolerant, highly available distributed systems
- Optimize systems forĀ high concurrency and real-time execution
Your Engineering Stack
Tech/ToolsPython / GolangBuilding core backend services and logic-heavy systemsAWS / GCPDeploying and scaling distributed backend infrastructureKafka / RabbitMQHandling asynchronous processing and event-driven workflows
The Bar
SignalCore Backend Experience2ā3 years of hands-on experience building APIs, backend systems, and scalable servicesProblem-Solving AbilityStrong fundamentals in data structures, algorithms, and logical thinkingSystem Design UnderstandingAbility to design scalable backend systems with clear architectural thinkingOwnership & ExecutionExperience owning backend features end-to-end in a fast-paced environment
The Interview Loop Ā· Screening for the Top 1%
RoundsRound I Ā· Recruiter ScreenEvaluation of backend experience, problem-solving approach, and project depthRound II Ā· Hiring ManagerDeep dive into backend projects, APIs, databases, and system design thinkingRound III Ā· Domain LeadLive coding + backend problem-solving + discussion on scalability and distributed systemsFinal Ā· LeadershipCulture fit, ownership mindset, and ability to operate in a high-velocity startup environment
Your Growth TrajectoryĀ TestMu AI is a high-growth environment where we promote based on complexity solved, not years of tenure. As a Backend Developer, you have a massive runway to scale from an Individual Contributor (IC) into a core Engineering Leadership role, working alongside pioneers in agentic intelligence.
Perks of the Future
- Health & Wellness:Ā 100% premium covered insurance for you + family (spouse, kids, parents) with annual check-ups.
- Fuel for Innovation:Ā Fresh, daily gourmet lunch and dinner served at our Noida HQ.
- Seamless Transit:Ā Safe, GPS-enabled cab facilities for eligible shifts (home-office-home).
- POD Culture:Ā Dedicated quarterly budgets for team-building, offsites, and collaborative celebrations.

About TestMu AI (Formely LambdaTest)
About
TestMu AI (formerly LambdaTest) is the worldās first full-stack Agentic AI Quality Engineering Platform.
We built TestMu AI for a reality where software is written by AI and must be shipped at machine speed.
Tech stack
Connect with the team
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- Experience in Python
- Experience in any Framework like Django, and Flask.
- Primary and Secondary skills - Python, OOPs and Data Structure
- Good understanding of Rest ApiĀ
- Familiarity with event-driven programming in PythonĀ
- Good analytical and troubleshooting skills
The requirements are as follows:
1) Familiar with the the Django REST API Framework.
2) Experience with the FAST API framework will be a plus
3) Strong grasp of basic python programming concepts ( We do ask a lot of questions on this on our interviews :) )
4) Experience with databases like MongoDB , Postgres , Elasticsearch , REDIS will be a plus
5) Experience with any ML library will be a plus.
6) Familiarity with using git , writing unit test cases for all code written and CI/CD concepts will be a plus as well.
7) Familiar with basic code patterns like MVC.
8) Grasp on basic data structures.
You can contact me on nine three one six one two zero one three two
Founding Engineer (Bangalore)
The problem:
Business enterprises overpay vendors - on every batch of invoices, on every month because the data that would catch lives in different systems. We are building an AI agent that processes invoices end-to-end, reasons across all the relevant sources, flags genuine discrepancies, and acts - without a human having to investigate each one.
What you will own
Everything engineering. Schema design to deployment to the 2am fix when something breaks in production. There is no tech lead above you. There is no platform team. There is the architecture, you, and the founders. Concretely, this means building:
- A multi-stage agentic pipeline that takes a vendor invoice and produces a structured decision - fully autonomous for clear cases, escalating to human review for genuinely ambiguous ones. We use LangGraph, but if you've built equivalent systems with Temporal, Prefect, or custom state machines with LLM orchestration, that works
- An LLM-powered extraction layer that handles real invoices - scanned PDFs, stamped documents, inconsistent layouts - and returns structured output
- A graph data model that connects invoices to various sources and can traverse those relationships to detect discrepancies
- ERP connectors, GST validation logic, and a write-back layer that closes the loop
What we need
- Strong Python. Async FastAPI, clean service boundaries, tests that actually catch bugs. You have shipped Python backends that handled real production load
- Solid Postgres. Complex queries, schema design, migrations without downtime, row-level security for multi-tenant data. pgvector is a plus - if not, you pick it up fast
- LLM API experience in production. You have called an LLM API for something that real users depended on. You know about structured output, retry logic, cost management, prompt versioning. A side project counts if it was genuinely deployed
- Comfort with graph data models. You understand when a graph is the right structure and when it is not. You do not need deep Neo4j production experience - you need to understand graph relationships conceptually and be willing to learn Cypher. It is a 2-day ramp for the right person
- Working knowledge of deployment. Deployed and operated production workloads on GCP. Cloud Run, Cloud SQL, Cloud Storage, Redis ā you're comfortable across the stack. If you've done it on AWS, the translation isn't hard, but GCP is where we are
- You own things. Not "I contributed to" - you designed it, shipped it, and fixed it when it broke. That pattern needs to be visible in your history
Good to have, not mandatory
- Built an agentic pipeline with multiple stages
- Any fintech, P2P domain experience - even tangential
- Worked at a startup with under 20 people
- Has a GitHub, blog, or writeup that shows how you think about a hard technical problem
What you get
- The hardest engineering problem you would have worked on. This is not CRUD with an LLM bolted on
- Real ownership. First engineering hire. Your architectural decisions will be in this product five years from now
- Equity that matters. ESOP - Open to discussion. We are pre-seed - this is a bet, not a guarantee. We will not pretend otherwise
- No meetings tax. You work directly with the founders. The product is specified clearly. You know what you are building and why
Honest about stage: We do not have a production ready infra yet. We have a complete architecture specification and a working prototype. If you need the stability of an established engineering org, this is not the right moment. If you want to build something real from zero and own a meaningful piece of it, it is.
The founders
One of us has spent 20 years building revenue and operational engines at companies where there was no playbook - part of the pilot team that established the world's largest search company's direct sales operations in India, managed global operations for a global mobile advertising platform, scaled a B2C platform to become one of Indiaās leading edtech platforms and most recently worked on building an enterprise Agentic Voice AI platform. The other has spent 15 years taking AI from demo to production in domains where failure is expensive - voice, lending, and conversational systems across a Series D conversational AI company, a major telco, a Big 4, and a leading NBFC.
Two IIT/IIM alumni who have both watched AI work in enterprise, and know exactly what it takes to get it there. We are not building this product because it sounds interesting. We are building it because we have both sat across the table from CFOs who know they are losing margin and have no tool capable of doing anything about it.
- Hands-on experience in development of rest services using python
- Good knowledge Django or Flask framework
- Designing database tables and structures
- Skilled at optimizing large complicated SQL statements
- Knowledge of best practices when dealing with relational databases
- Proficient understanding of code versioning tools such as Git
- Good understanding of asynchronous request handling, partial page updates, and AJAX
- Experience in owning Code Quality and Code Review processes
- Good understanding of application debugging techniques
- Experienced in Agile methodologies
- Strong analytic, problem solving, and programming ability
- Initiative and drive to contribute
- Excellent organizational and task management skills
- Strong oral and written communication skills
- Ability to work in global cross-office teams
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Additionally, we seek individuals with the following qualifications:
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- Understanding of SEO and accessibility issues and how they relate to development
- Experience with NoSQL using MongoDB/Cassandra is a plus.
- Experience in working with Amazon Web Services (AWS) like S3, EMR, EC2 is preferred
Ā
Stealth Fintech startup looking for Software Engineer with 2+ year of experience.
We are looking to hire few engineers for this position ASAP.
Well funded !
Permanent Remote Position !
Competitive Salary !
You will be a part of the founding engeering team. We are working cutting edge technology stack such as Cassandra, Terraform, Kubernetes, Redis, MongoDB, InfluxDB, Graphana, GoLang, AWS.
You will get the opportunity to work on a massive scale project, crawling 100+ Million pages per day, and very complex problems which will help you grow as an engineer.
Requirements:
- Past work experience with crawler / scraper is a MUST
- Self starter mentality who can pick up new skills & can work independently
- Experience with programming languages like Java, C#, Go, Python, PHP
- Understanding of concepts like HTTP, Sessions / Cookies, IP rotation
- Expereince with AWS or Google Cloud
- Familiar with multithreading architecture
Responsibilities:
- Design and create services and system architecture for your projects, while working.
- Closely with the product, design and engineering team.
- Participate in brainstorming sessions and contribute ideas to our technology, algorithms and products.
- Dive into difficult problems and successfully deliver results on schedule.
- Own services related to OkCredit features in active development.
- Develop and deploy required services responsible for evolution of the overall product.
- Do server side development in golang/python preferably (or any other language).
- Deploying stuff in production in docker containers.
- Write tests.
- Invent awesome stuff to make your job easier
- Motivation to design and build reliable, elegant backend services.
- At least 2 - 5 years of backend development experience.
- Proficiency in GoLang is MANDATORY.
- Familiarity with infrastructure concepts related to docker, kubernetes is preferred.
- Familiarity with Protocol buffers. Protocol buffers are now OkCredit's lingua franca for data.
- Familiarity with message-oriented middleware like rabbitmq, google pubsub.
- Familiarity with cloud platforms like gcp, aws etc.
- Expert in Python, with knowledge of Python web framework Django
- Familiarity with some ORM (Object Relational Mapper) libraries
- Able to integrate multiple data sources and databases into one system
- Basic understanding of front-end technologies, such as JavaScript, HTML5 and CSS3
- Familiarity with event-driven programming in Python
- Strong experience on Linux
- Solid database skills in a relational database (i. e. PostgresSQL)
- Able to create database schemas that represent and support business processes
- Strong unit test and debugging skills
- Proficient understanding of code versioning tools (git)
- Experience on RESTful APIs
- Experience deploying on AWS is desirable
- Experience on Automation Builds using Jenkins and other popular frameworks
- Strong analytical and problem-solving skills paired with the ability to develop creative and efficient solutions
- Excellent interpersonal, leadership, influence and communication skills
- Experience in designing scalable micro-services is desirable
Job Description
Viaan Industries Limited is looking for a Software Developer who is motivated to combine the art of design with the art of programming.The ideal candidate for this position will have a broad technical skill set and extensive experience in this industry. As a result, the candidate should be able to design, develop, test and deploy the products required for the company's needs. Moreover, the candidate should be able to work with other developers in determining product strategy.
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Responsibilities
- Own the product : Design, Develop & Deploy
- Ensure Quality & sustainability of the architecture
- Obsess about code quality, automated testing, continuous integration, code reviews, and documentation
- Provide quick & creative solutions for day-to-day operational issues
- Assure that all user input is validated before submitting to back-end.
- Ensure the technical feasibility of UI/UX designs.
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Required Skills
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- Proficient in Server Side Programming Languages :- PHP (Laravel)
- Proficient in design & architecting scalable products.
- Must have hands on experience in Ajax, Jquery.
- Database knowledge ā MongoDb.
- Knowledge of Development Tools Bitbucket, Git, CI/CD with BitBucket and JIRA
- Web Server technologies:- Apache, Nginx
- Solid foundation in data structures, algorithms, and system design
- Expert in HTTP terminologies such as Request/Response cycle, content negotiation, CORS etc
- Management of hosting environment, including database administration and scaling an application to support load changes
- Optimization of the application for maximum speed and scalability
- Implementation of security and data protection
- Setup and administration of backups
- Obsess about code quality, automated testing, continuous integration, code reviews, and documentation.
- Exposure to microservices architecture/ API concepts would be an added advantage.
- Good organizational and time-management skills
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Good To Have
- Knowledge of NodeJs, Angular
- Familiarity with AWS products - Beanstalk, Elb, ECS, EC2, SNS, SQS, S3, RDS, etc.
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Qualifications
- Bachelorās degree or equivalent in computer science / engineering
At BACQ, our mission is to build financial services that are simple, accessible and affordable.
BACQ is founded by Sachin Bansal & Ankit Agarwal to build consumer-centric and technology-driven businesses in the BFSI (Banking, Financial Services & Insurance) space.
Responsibilities:
- Work on the development backend systems for our first product
- Build reliable, secure and performant backend systems
- Drive test coverage and continuous delivery automation within the team
- Mentor and provide feedback to teammates
Requirements:
- 2+ years of software development experience
- Strong computer science fundamentals
- Good knowledge of Java ecosystem
- Can write code that is readable, maintainable and performant
- Know the importance of tests and how to approach writing different types of tests
- Good understanding of relational databases, transactions, entity-relationship modeling
- Comfortable writing multi-threaded programs
Bonus:
- Understanding of domain-driven design concepts like ubiquitous language, bounded contexts, aggregates and domain events
- Know how to use test driven development as a design toolĀ
- Good intuition for the principles underlying object-orientation, particularly encapsulation
- Understand the importance of immutability and of reducing the state-space of objects
- Seek to identify key underlying ideas and use those as building blocks before reaching for shiny new tools
- Have read some of our https://docs.google.com/document/d/18eWIOPYs0Hi8Kr4lXTtP_XMJp_4BrBzOd9Eui8v_l-c/edit?usp=sharing">favourite books











