
Responsibilities:
- Design and code efficient, scalable systems that can accept feedback from multiple hundred thousand employees and generate insights
- Design efficient and scalable event driven systems to process complex machine learning pipeline
- Experiment with data to come up with unique insights and that can benefit our clients
- Identify libraries and technologies worth experimentation
- Participate in brainstorming sessions to bring more value to our clients
- Investigate performance issues / scalability bottlenecks, existing queries and/or write new queries with performance optimization in mind
- Develop RESTful APIs that can be used by frontend to show insights
- Debug and fix production level bugs as and when they crop up
- Support ad hoc data analytics upon requests by clients, and believe us nothing creates a better DB understanding than handling ad hoc data requests
Requirements:
- 3+ years of experience in architecture and developing high performance web applications
- Experience with systems ingesting/processing high amounts of data is a plus
- In-depth understanding of the entire web development process (design, development, and deployment)
- Experience with SQL and NoSQL database
- Working knowledge of RESTful API paradigms
- Experienced in microservices architecture
- Solid engineering principles and a clear understanding of data structures and algorithms
- Passion for products, empathy for users, and aspiration to make a big impact

About Leena AI
About
Connect with the team
Similar jobs
We are a dynamic and innovative technology company dedicated to delivering cutting-edge solutions that empower businesses and individuals. As we continue to grow and expand our offerings, we are seeking a coding fanatic, who is interested in working on and learning new technologies.
Position - Backend developer
Job type - Freelance or on contract
Location - Remote
Roles and Responsibilities:
- Plan,create and test REST APIs for back-end services such as authentication and authorization.
- Deploy and maintain backend systems on the cloud.
- Research and develop solutions for real life business problems.
- Creating and maintaining our apps' essential business logic, providing correct data processing and flawless user experiences.
- Database design, implementation, and management, including schema design, query optimisation and data integrity.
- Participating in code reviews, providing constructive input, and ensuring that code quality standards are met.
- Keep abreast of industry developments and best practices to bring new solutions to our initiatives.
Required skills and experience -
Must have skills : -
- Bachelor’s degree in computer programming, computer science, or a related field.
- 3 + years of experience in backend development.
- Proficient in Python,Mongodb,postgres/sql,Django and Flask
- Knowledge on nginx.
- C++/C +Cython for creating python modules
- Knowledge on Redis
- Familiarity with using AI provider apis and prompt engineering
- Experience in working with linux based instances on the cloud.
- Strong problem solving and verbal and written communication skills.
- Ability to work independently or with a group.
Good to have skills :-
- Experience in node.js and Java
- AWS and Google cloud knowledge.

Are you looking for a super-challenging role designing backend systems that scale to 1000+ TPSs in one of India's fastest growing, profitable near-Unicorns with businesses spanning Lending, E-comm and UPI? Then this is the role for you.
Client Company is a profitable, rapidly scaling unicorn which is extremely well capitalized. Client has a very strong moat in the consumer lending space on the back of which it is entering into additional large markets such as E-comm and UPI.
Client company is now entering its next phase of growth from a fast-scaling startup to a robust, high-scale financial platform serving millions of users daily.
You'll design systems built for 10x100x growth, make the key technical trade-off calls, and stay deeply hands-on. Beyond building, you'll mentor engineers and work directly with founders and product teams to translate business goals into scalable, reliable systems.
This role is an opportunity to:
- Shape the next-generation architecture for a high-throughput fintech system
- Build systems designed to scale 10x100x from current volumes
- Solve real-world problems across performance, reliability, and financial-grade security
Responsibilities
- Design and evolve the platform architecture to support 10x100x growth
- Own systems end-to-end from the first design decision to production impact
- Lead system design discussions and set the long-term technical direction for the platform
- Identify scale bottlenecks early and drive solutions
- Mentor and elevate engineers through design reviews, code quality, and architectural thinking
- Partner directly with founders and product teams to turn business priorities into scalable systems
- Operate with high ownership in a fast-paced environment where priorities evolve quickly
- Drive projects independently own timelines, coordinate with teams, and see delivery
- Conduct rigorous code reviews and champion engineering best practices across the team
- Proactively identify gaps in the system and come up with concrete approaches to address them
- Solve technical problems across the company not just confined to a single pod
- Challenge existing architecture with data and reasoning push back when its the right call, and drive adoption of better approaches.
Requirements
- 7-12 years of experience in backend or platform engineering
- Strong computer science fundamentals (preferably from IIT, BITS, NITs)
- Strong proficiency in backend development (Node.js, Java, Go, or equivalent)
- Proven experience scaling systems through high-growth startup phases (1→10 or beyond)
- Track record of building and owning critical platforms or systems from scratch
- Exposure to high-volume transactional systems; fintech or lending is a strong plus
- Bias for action - moves fast, makes sound decisions, owns outcomes end-to-end
- Comfortable navigating ambiguity and evolving priorities in a startup environment
- Strong problem-solving skills ability to break down complex technical challenges and arrive at pragmatic, well-reasoned solutions
- Hands-on experience with platform engineering developer tooling, shared services, infrastructure abstractions, or internal platforms
What you’ll do here:
•Lead the technical implementation of our platform using Python for new and existing clients
•Collaborate with internal teams to deliver seamless onboarding experiences for our clients.
•Translate business use-cases into scalable, secure, and maintainable technical solutions
•Own the technical relationship with clients, acting as a trusted advisor throughout the implementation lifecycle
•Conduct code reviews, enforce best practices, and ensure high-quality deliverables
•Mentor developers and contribute to internal tooling and automation
•Troubleshoot and resolve complex integration issues across cloud environments
What you will need to thrive:
•8+ years of software development experience.
•Strong proficiency in Python (preferred), C# .NET, or C/C++.
•Proven track record of leading technical implementations for enterprise clients.
•Deep understanding of Pandas, Numpy, RESTful APIs, webhooks, and data transformation pipelines.
•Excellent communication and stakeholder management skills.
Requirements:
- Proficient in fundamental Software Design Principles, Data Structures, Algorithms, Problem Solving and Complexity Analysis.
- Proficient in programming languages like Python/Java/Javascript/Golang or similar.
- Strong understanding of professional software engineering practices & best practices for the full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations.
- Hands-on Experience with SQL/NoSQL databases such as Postgres, Mysql, MongoDB.
- Hands-on experience with GIT, CI/CD, REST APIs and Cloud ( AWS/ GCP/ Azure) will be preferred.
- Understanding of Microservice Architecture and System Design Principles is a plus.
- Self-driven, detail-oriented and Strong sense of ownership, urgency, and ability to deliver great work.
- Demonstrated expertise in developing, releasing and maintaining large scale software applications.
The Role:
We are looking for an enthusiastic Senior Python Developer, who adopts a hands-on approach and loves to build scalable, distributed and large web / mobile products. You would be responsible for designing the architecture, reviewing the code, building the technology and deploying web/mobile applications.
Responsibilities:
- Own the product development from scratch.
- Design and implementation of low-latency, high-availability, and performant applications.
- Contribute to discussion on software architecture while mentoring a team of developers.
- Participate in code reviews, design reviews, SCRUM ceremonies, and troubleshoot to ensure uptime for live systems etc.
Requirements:
- Bachelor's degree in a technology-related field from a premier college.
- Prior 3+ years of experience in back-end development (Python/ Golang) in a start-up or a dynamic work environment.
- Good exposure in writing and optimizing SQL for high-performance systems.
- Understanding of asyncio and eventloop/ uvloop concepts. Knowledge of frameworks such as Quart/ Fastapi/ Starlette is preferred.
- Knowledge of AWS; Caching technologies like Redis, Memcache; ELK; mySQL Databases, etc.
- Strong understanding of System Design, Microservice Architecture, Kafka, Pub/Sub, Message queues, and in-memory data stores etc.
- Customer oriented, responsive to changes, and able to multi-task in a fast-paced environment.
We're looking for someone to join a team dedicated to building performant APIs and backend services that deal with large volumes of data for the company's flagship, global consumer product. Small, high-impact teams require conscious planning and decision-making when it comes to design, architecture, and product features. So, it's essential that you enjoy working in such an environment.
We're a team that cares about simplicity and being able to build reliable, deterministic systems and platforms. Hence, our choice of tooling is usually battle-tested reliable software with a robust test suite.
How we work
- You won't deal with the hustle culture. We're focused on building well-thought-out, stable and reliable software and we try our best to ensure everyone understands the big picture and the immediate goals.
- We work a solid 6-8 hour days and don't slave away 24/7.
- We're a remote engineering team. This makes effective communication extremely important. Our teams have benefitted greatly from good written communication. This includes everything from the product specification to the API spec. We spend a lot of time writing READMEs. As a result our engineers work with greater clarity and planning.
- We deploy several times a day and rely on a good test suite to ensure we're not making life hard for our colleagues.
- We don't expect anyone to know everything, but we are curious and learn along the way.
- We learn about the fitness space and what it means to really be fit and not just Instagram fit.
The Python Backend Engineer position may be a good fit for you if:
- You have 3 (or more) years of experience building and maintaining cloud applications.
- You have built APIs with Python, Flask, Django or FastAPI before.
- You have experience working with relational databases like PostgresSQL or MySQL and have spent time writing SQL queries for large datasets.
- Experience in writing Unit tests with pytest.
- You have worked with Docker, docker-compose.
- Familiarity with the AWS ECS stack.
We want you to care about
- Good object oriented design
- Performant APIs
- Analysing why queries are slow and how to go about improving them.
- Understanding DNS, Load balancing, Caching and Hashing.
- Customer data and privacy.
Our API Stack services use:
- Python 3.8+, Typescript
- FastAPI, Flask, HapiJs
- PostgresSQL, MySQL
- Redis
- Celery
- Pytest, Jest for unit testing.
- Gitlab CI/CD
- Amazon ECS container services
We are looking for a great Go developer who possesses a strong understanding of how best to leverage and exploit the language’s unique paradigms, idioms, and syntax. Your primary focus will be on developing Go packages and programs that are scalable and maintainable. You will ensure that these Go packages and programs are well documented and has a reasonable test coverage. You will coordinate with the rest of the team working on different layers of the infrastructure. A commitment to collaborative problem solving, sophisticated design, and quality product is essential. Interested candidates can apply directly on https://cloudfeathergames.com/positions" target="_blank">https://cloudfeathergames.com/positions for a faster approach.
Number of positions - 2
Responsibilities
Primary responsibilities and skills include the following areas:
- Writing scalable, robust, testable, efficient, and easily maintainable code
- Translating software requirements into stable, working, high performance software
- Playing a key role in architectural and design decisions, building toward an efficient micro services distributed architecture
- Building highly scalable, highly available web services to handle millions of transactions per day in a cloud native environment
- Working on an agile team using CI / CD best practices to deliver the highest quality software possible quickly
- A strong desire to learn new things and continually improve yourself and those around you with a “can do anything” mentality
- You live to experiment, test, fail fast, and learn as you go, we are not looking for a cookie cutter solution to the complex problems we solve
- Strong knowledge of Go programming language, paradigms, constructs, and idioms
- Knowledge of common Goroutine and channel patterns
- Ability to write clean and effective Godoc comments
- Familiarity with code versioning tools git
- Good understanding of SQL and data modeling.
- Scripting ability (Bash / Shell, Python etc)
- Any one of these data store MongoDB, Postgres, CockroachDB, or other NoSQL servers
- Automated testing of applications & Continuous Integration
- Experience writing and building API systems using REST / JSON / gRPC
- Experience with Kubernetes, Docker, Kafka, NATS etc.






