
Principal Engineer (Python)
at FinTech product company from UK,
Your Responsibilities:
- Own the backend stack – Python based, that powers our product
- Collaborate with Data Scientists, Backend Developers(Node.js), Front-end developers, DevOps to design and implement new features
- Build and maintain several Backend Jobs and REST’ful Services which will be used internally in a Macroservices/Distributed services environment.
- Deploy and monitor the Jobs and endpoints ensuring availability and scalability(ability to handle 100X data processing load)
- Work on full project lifecycle starting from requirements gathering/understanding the problem to deploying and maintaining the project.
Skills that you bring Along:
- A minimum 8+ years of extensive work experience with Python and related frameworks – particularly Flask.
- Extensive experience in designing and scheduling backend Python jobs
- Hands on working in different file formats like Json, Parquet, csv etc. coming from Data Science side.
- Extensive experience with databases such as Postgres and Mongo.
- Extensive experience in Cloud Infrastructure (AWS based) – e.g. AWS API Gateway, Lambda Functions etc.
- Experience with cache like Redis and/or Memory cache
- Good experience in Microservices/Macroservices or Event driven Architectures
- Good experience with design patterns
- Experience in writing advanced SQL-queries, good knowledge of PL/SQL
- Good understanding of Software Design Principles and domain-driven design
- Good experience with Continuous Delivery and Containerization(Docker)
- Good experience in designing and maintaining REST’ful API endpoints
- Ideally maintaining infrastructure-as-code using Terraform
- Ideally experience in parallel data processing and building end-to-end Data Pipelines using tools such as Airflow/Prefect and Spark/Dask
- Excellent communication skills and the ability to explain complex topics in a simple manner

Similar jobs
🚀 Hiring: Python Developer
⭐ Experience: 2+ Years
📍 Location: Mumbai
⭐ Work Mode:- 5 Days Work From Office
⏱️ Notice Period: Immediate Joiners
(Only immediate joiners & candidates serving notice period)
Looking for a skilled Python Developer with experience in Django / FastAPI and MongoDB / PostgreSQL.
⭐ Must-Have Skills:-
✅ 2+ years of professional experience as a Python Developer
✅Proficient in Django or FastAPI
✅Hands-on with MongoDB & PostgreSQL
✅Strong understanding of REST APIs & Git
Job Title : Python Developer (Immediate Joiner)
Experience Required : 3+ Years
Employment Type : Full-time
Location : Gurugram, India (Onsite)
Working Days : 6 Days (5 Days WFO + 1 Day WFH)
Job Summary :
We are seeking a talented and experienced Python Developer with a strong background in Django and a proven ability to build scalable, secure, and high-performance web applications. The ideal candidate will have hands-on experience with RabbitMQ, Redis, Celery, and PostgreSQL, and will play a key role in developing and maintaining robust backend systems. This is an onsite opportunity for immediate joiners.
Mandatory Skills : Python, Django, RabbitMQ, Redis, Celery, PostgreSQL, RESTful APIs, Docker.
Key Responsibilities :
- Design, develop, and maintain Django-based web applications and APIs.
- Implement asynchronous task handling using RabbitMQ and Celery.
- Optimize application performance using Redis for caching and session storage.
- Manage database operations, including schema design and query optimization, using PostgreSQL.
- Collaborate with front-end developers, DevOps teams, and stakeholders to deliver full-featured solutions.
- Write clean, modular, and well-documented code aligned with industry best practices.
- Troubleshoot, debug, and resolve issues across the application stack.
- Participate in architecture discussions, code reviews, and sprint planning.
- Ensure the scalability, performance, and security of backend services.
Required Technical Skills :
- Minimum 3 Years of experience in Python development.
- Strong hands-on experience with the Django framework.
- Proficiency in RabbitMQ for message brokering.
- Practical experience with Redis for caching and session management.
- Experience using Celery for background job/task queue management.
- Solid knowledge of PostgreSQL (database design, indexing, and optimization).
- Understanding of RESTful API development and integration.
- Familiarity with Docker and containerization.
Preferred Skills :
- Exposure to CI/CD tools and pipelines.
- Experience working with cloud platforms such as AWS or GCP.
- Knowledge of Django ORM optimization techniques.
- Basic familiarity with front-end technologies like HTML, CSS, and JavaScript.
Soft Skills :
- Strong analytical and problem-solving capabilities.
- Effective communication and interpersonal skills.
- Ability to thrive in an agile, fast-paced development environment.
About Gyaan:
Gyaan empowers Go-To-Market teams to ascend to new heights in their sales performance, unlocking boundless opportunities for growth. We're passionate about helping sales teams excel beyond expectations. Our pride lies in assembling an unparalleled team and crafting a crucial solution that becomes an indispensable tool for our users. With Gyaan, sales excellence becomes an attainable reality.
About the Job:
Gyaan is seeking an experienced backend developer with expertise in Python, Django, AWS, and Redis to join our dynamic team! As a backend developer, you will be responsible for building responsive and scalable applications using Python, Django, and associated technologies.
Required Qualifications:
- 2+ years of hands-on experience programming in Python, Django
- Good understanding of CI/CD tools (Github Action, Gitlab CI) in a SaaS environment.
- Experience in building and running modern full-stack cloud applications using public cloud technologies such as AWS/
- Proficiency with at least one relational database system like MySQL, Oracle, or PostgreSQL.
- Experience with unit and integration testing.
- Effective communication skills, both written and verbal, to convey complex problems across different levels of the organization and to customers.
- Familiarity with Agile methodologies, software design lifecycle, and design patterns.
- Detail-oriented mindset to identify and rectify errors in code or product development workflow.
- Willingness to learn new technologies and concepts quickly, as the "cloud-native" field evolves rapidly.
Must Have Skills:
- Python
- Django Framework
- AWS
- Redis
- Database Management
Qualifications:
- Bachelor’s degree in Computer Science or equivalent experience.
If you are passionate about solving problems and have the required qualifications, we want to hear from you! You must be an excellent verbal and written communicator, enjoy collaborating with others, and welcome discussing a plan upfront. We offer a competitive salary, flexible work hours, and a dynamic work environment.
- Develop, maintain, and enhance robust backend systems using Python3 and frameworks like Django (mandatory), Flask, and FastAPI (good to have).
- Design, implement, and maintain highly efficient and automated continuous integration and continuous deployment (CI/CD) processes using Jenkins and configuration management with Ansible.
- Elevate our testing culture by architecting and implementing innovative testing strategies, focusing on both unit and integration testing to ensure exceptional code quality and extensive coverage.
- Follow peer-to-peer code reviews and cross-team collaboration to build scalable and reliable solutions.
- Proficiently work with at least one cloud technology, preferably AWS, to deploy and manage applications in the cloud environment.
- Possess knowledge of Nginx, load balancing, and scalability to optimize system performance and reliability.
- Good experience working in distributed micro-service architecture and driving them with crucial requirements like request tracing, debugging critical issues, logging, monitoring, and alerting.
- Work in containerized environments using Docker and Docker Compose, and have experience with AWS ECS for container orchestration.
- Prioritize maintainability and reliability in developing and maintaining software systems, pushing the boundaries of what's possible in our product ecosystem.
- Collaborate effectively within a team, taking initiatives and driving projects forward with minimal micro-management.
- Pave the way for maintainable and reliable codebases by introducing novel approaches and best practices in software development.
Requirements
- Bachelor’s/Master’s degree in computer science.
- Strong teamwork and communication skills, with a proactive approach to project management and task ownership.
- Proven track record as an innovative Python developer with a focus on product engineering.
- Visionary mindset to work in an agile environment, participating in sprint planning, stand-ups, and retrospectives.
Benefits
100% Remote
Insurance
- 6+ years of experience with expertise in Django CMS, Python, REST framework, AI framework
- MySQL Db usage, SQL queries
- Experience in using scraping tools.
- Microservices
- Docker and Kubernetes hands-on experience
- AWS Redis cache integration
- Deployment on AWS cloud, auto-scale
- Work will be rotational Shifts/ UK Shift
- Must be flexible to work on weekends/stretch for some hours
A Fintech start up company that bridges the gap between the digital payments
and the micro-retailing industry of the market. A nexus for the B2B sector providing multi-utility services via an Android app, enabling the micro-retailers across India to revolutionize their business and thus providing them with an opportunity to generate more revenue by offering multiple micropayment and digital services at their offline store. We intend to leverage the mode of smartphone technology in the rural and urban markets across India, thus empowering micro-retailers and creating a sustainable self-employment for this segment.
Overall Competencies:
1. Tech Depth/Breadth/Problem Solving.
2. Design & Architecture (Code/Design review).
3. Team Management.
Leadership Competency:
- Managing & mentoring a team.
- Ability to deliver projects/sprints on time.
- Obsessed with quality: Design reviews, code reviews, testing (system/performance).
- Spending at least 50% time with hands-on coding while doing the above Programming.
Tech Competency:
- Hands-on with Python/Django/Flask.
- Knowledge of PHP & Laravel is a plus.
- Experience with any JavaScript framework (Angular / React ).
- Prior experience in micro-services based architecture.
- Good understanding of SQL (MySQL, Postgres, or similar).
- Good understanding of one no-SQL (MongoDB / DynamoDB etc).
- Comfortable producing and refactoring code without assistance.
- Can reason about the complexity of algorithms (time and space).
- Basic CI/CD and DevOps.
- Experience in Docker & Kubernetes.
- Design, QA, and Infrastructure.
- Knowledge of design patterns and cloud scaling.
- AWS & GCP experience. AWS is mandatory.
- Understands BDD/TDD/Performance/Security/Smoke testing/Unit Testing
- Understands REST principles and Microservices
- Understands version control & branching strategies
- Understands application security fundamentals and potential security risks
Education: Bachelors in Computer Science|
The B2B manufacturing industry has a lack of digitisation globally. NowPurchase is building layers of technology to help improve the productivity and profits of the manufacturer. For this we are building the OS (Operating System) that will seamlessly connect factory equipment such as furnaces and spectrometers to our software systems that provide real time optimisations.
The end-game is to use this interconnected system to do great production planning and autonomous procurement of their raw materials. The Heart of NowPurchase will be a marketplace consisting of these smart factories and raw material suppliers.
Here a video that explains our product journey:
https://www.loom.com/share/ccd0ed9e7bc349d7bba851d762253c21">https://www.loom.com/share/ccd0ed9e7bc349d7bba851d762253c21
This is fully a remote role, but the employer needs to fly down to the office in Kolkata for 5–6 days every month. Plane tickets and accommodation will be reimbursed by the company.
Role Description
NowPurchase is looking to add an immensely talented Senior Backend Engineer that will help us invent, design, refine and deliver products that will meet the above vision.
- Expect to build a lot of services and APIs in the cloud and stand-alone IoT devices to serve both the browser as well as native IoT enabled terminals that will be placed at the manufacturers' premises.
- Expect designing algorithms that model the metallurgy of the manufacturing processes as well as using tools such as linear programming, machine learning etc.
- You need to lead the backend team to make sure they are delivering high quality code and is constantly inspired to experiment with tools to push out MVPs.
What are the expectations from this role?
- Deliver high quality modular code deployed to serve web, mobile and native IoT enabled terminals that leverage REST-based services and real time sockets. This would include algorithms for real time optimizations that are critical for the manufacturing process.
- You are empowered to work directly with leadership and the product team to make decisions about your code and future of the product.
- Have a strong emphasis on shipping features quickly without sacrificing code quality. Be ready to build a lot of MVPs that will go through iteration or be completely scrapped depending on the outcome at the customer end.
- Own your Agile projects and lead the team from software design to implementation and deployment. Maintain sprints, delivery timelines and contribute to better managing the engineering team.
- Collaborate on the end to end design and implementation of the platform, including data modeling, systems architecture, data security, access controls, architecture, user experience, deployment, automation, and monitoring.
- Maintain a high level of data integrity, quality and security checks.
- Develop data pipelines and RESTful services that are distributed, robust and highly performant.
- Build a culture of simplicity and pragmatism, which is reflected in your elegant code that other developers emulate and you ensure through thorough code reviews and processes.
Qualifications and Experience
- 4+ years of demonstrated software engineering experience in an agile environment designing, architecting and implementing robust scalable systems preferably for modern SaaS application
- 1+ years of technical leadership experience
- Experience with modern server-side programming languages such as Python, Scala, Go. Experience with web frameworks such as Django Rest Framework, Flask.
- Experience with architecting asynchronous services with design patters leveraging PostgreSQL, MongoDB, Redis, Celery for storage and multi-tenant servers over AWS Elastic BeanStalk.
Compensation & Benefits
- **Cash Compensation:** As per industry standards & pedigree of candidate
- **ESOPs:** 10% of NowPurchase is dedicated to current & future team members. Your package would entail some ESOPs so that you own a part of the company and grow along with it.
- **Medical Insurance:** Benefits of group insurance of 3 lakhs for family including parents, spouse, children
- **Generous leave structure and WFHs** including Marriage, Maternity & Paternity leaves
- **Complete Relocation Expenses:** We are building a unicorn out of the city of Joy (Kolkata). We will pay for everything you spend to relocate here.
**Possible Growth path**
Senior Backend End Engineer > Engineering Manager > VP of Engineering
**Tech Stack**
- React/Redux
- Python/Django/Celery
- Git, AWS, ELB (Elastic Beanstalk), Netlify
- PostgreSQL/Redis/S3
## **Hiring Process**
1. Screening of applicants & initial telephonic call with Manager -HR
2. F2F/Video Interview with Engineering Manager and Cofounder CTO
3. Take home written assessment
4. F2F/Video Interview with Cofounder CEO
5. Email communication on final feedback
The end to end process shall take less than 10 days. We pride ourselves on being transparent & moving fast.
*Candidates who accept an offer may join within 1 hour, 1 week or up to 45days of signing - though, we have a preference for as short a gap period between signing and joining since we're at the most exciting part of our journey - laying the foundation for the NowPurchase platform!*
- Work with stakeholders and fellow developers.
- Design and implement Python code using the Django framework.
- Identify and fix bottlenecks that may arise from inefficient code.
- Identify and fix software bugs.
- Create a wide variety of unit tests to verify the functionality of software.
- Manage the security of the platform.
- Write detailed documentation around the code.
- Knowledge of front end languages.
Roles and Responsibilities
- Develop data analysis and processing engines using Python
- Develop server-side applications
- Develop and deploy applications on AWS
- Individually manage multiple projects with end-to-end oversight
- Undertake POCs on new tech stacks and integrate them in applications on a functional level
- Design small and large applications on an enterprise level
- Understand business requirements and translate them into applications
- Plan projects with complete details such as efforts, timelines, and wireframes
- Work under tight timelines
- Assist in project management of micro-innovation projects
- Create tools, templates, SOPs / training manuals, process documents etc
- Work with cross-functional / domain teams
- Work in a fast-paced and agile development environment
Desired Candidate Profile
- 3+ years of relevant experience with Object Oriented Programming.
- Expertise in Web frameworks: Django, Flask.
- Should have working knowledge in Programming: Python Advanced.
- Hands on knowledge on Source Control: GIT.
- And RESTFul Services.
- Strong knowledge of MVC / MVT framework, Apache Web Server/IIS/nginx, Docker, etc
- Proficiency in writing Web APIs / Rest APIs
- Ability to develop client server architecture applications
- Excellent understanding of relational databases such MySQL, MS SQL, and NoSQL(Mongodb)
- Strong understanding of how to connect a database with a chosen back-end language, with adequate grip over architecture
- Understanding of security-related concepts / within a server-side application
- Adequate knowledge on SDLC











