
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
Technical Proficiency :
Must have :
- Strong development experience in Python in the environment of Unix/Linux/Ubuntu
- Strong practical knowledge of Python and its libraries.
- Current working experience with cloud deployment of AWS/Azure/GCP, Microservice architecture, and Docker in Python.
- Good knowledge of CI/CD and DevOps practices
- Good Experience of Python with Django/ Scrapy/ Flask frameworks.
- Good Experience in Jupyter/ Docker/ Elastic Search, etc.
- Solid understanding of software development principles and best practices.
- Strong analytical thinking and problem-solving skills.
- Proven ability to drive large-scale projects with a deep understanding of Agile SDLC, high collaboration, and leadership.
Good to have :
- Expected to have migration experience from one version to the other, as this project is about migration to the latest version.
- Preferred if had an OpenEdx platform experience or any LMS platform.
7+ years of experience in Python Development
Good experience in Microservices and APIs development.
Must have exposure to large scale data
Good to have Gen AI experience
Code versioning and collaboration. (Git)
Knowledge for Libraries for extracting data from websites.
Knowledge of SQL and NoSQL databases
Familiarity with RESTful APIs
Familiarity with Cloud (Azure /AWS) technologies
About Wissen Technology:
• The Wissen Group was founded in the year 2000. Wissen Technology, a part of Wissen Group, was established in the year 2015.
• Wissen Technology is a specialized technology company that delivers high-end consulting for organizations in the Banking & Finance, Telecom, and Healthcare domains. We help clients build world class products.
• Our workforce consists of 550+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like Wharton, MIT, IITs, IIMs, and NITs and with rich work experience in some of the biggest companies in the world.
• Wissen Technology has grown its revenues by 400% in these five years without any external funding or investments.
• Globally present with offices US, India, UK, Australia, Mexico, and Canada.
• We offer an array of services including Application Development, Artificial Intelligence & Machine Learning, Big Data & Analytics, Visualization & Business Intelligence, Robotic Process Automation, Cloud, Mobility, Agile & DevOps, Quality Assurance & Test Automation.
• Wissen Technology has been certified as a Great Place to Work®.
• Wissen Technology has been voted as the Top 20 AI/ML vendor by CIO Insider in 2020.
• Over the years, Wissen Group has successfully delivered $650 million worth of projects for more than 20 of the Fortune 500 companies.
We have served client across sectors like Banking, Telecom, Healthcare, Manufacturing, and Energy. They include likes of Morgan Stanley, MSCI, StateStreet, Flipkart, Swiggy, Trafigura, GE to name a few.
Website : www.wissen.com
What we are looking
- You must have experience in Python, including development of microservices using flask/fastapi/sanic.
- You hold knowledge of at least one Python web frameworks
- You have experience in NoSQL databases such as MongoDB
- You are familiar with relational databases and unstructured data.
- You are familiar with some ORM (Object Relational Mapper) libraries.
- You have prior exposure to code versioning tools such as Git.
- You understand fundamental design principles behind a scalable application
Good to have
- Experience in cloud services such as AWS
- Knowledge of user authentication and authorization between multiple systems, servers, and environments
- Understanding of the threading concepts in Python and multi-process architecture
What you'll do
- Create database schemas that represent and support business processes
- Integrate multiple data sources and databases into one system.
- Develop and integrate RESTful APIs and services for business use cases
- Perform unit and integration tests on developed modules
1. Develop backend for applications in ecommerce/insurance/wealth management businesses
2. Design technically sound systems and deliver results in a fast manner
3. Building highly performant applications setting top standards in respective industries
Basic qualifications :
1. 5-7 years experience building highly performant applications in Python
2. Expertise in Python frameworks like Django
3. Familiarity with Rest of API
4. Good team handling Experience
5. Good grasp on data structures and proficiency in problem-solving
6. Knowledge of design patterns
Anyone interested send me the resume.
Senior Python Developer (6 + Years Experience)
Core Skills:
- Strong Python experience and understanding of modern design patterns, abstractions, object oriented programming at scale.
- Strong understanding of event based/async architectures (Kafka, WebSockets)
- Database interactions
- Working understanding of infrastructure as code (terraform ) and how develop code that will be deployed by IAC.
- Working understanding of Kubernetes including containerization, deploying, debugging services running on k8s.
Preferred:
- Working GCP experience including GKE, GCE, Cloud functions/cloud run, IAM.
- Git required
- CICD and automation experience; stack includes Jenkins, Terraform, Argo, Harness.

What will you be doing
- Build scalable and loosely coupled services to extend our platform
- Build bulletproof API integrations with third-party APIs for various use cases
- Evolve our Infrastructure and add a few more nines to our overall availability
- Have full autonomy and own your code, and decide on the technologies and tools to deliver as well as operate large-scale applications on AWS
- Give back to the open-source community through contributions to code and blog posts
- This is a startup so everything can change as we experiment with more product improvements
About you
- Relevant Experience: Minimum 6+ Years
- You have prior experience developing and working on consumer-facing web/app products
- Hands-on experience in Python. Exceptions can be made if you’re really good at any other language with experience in building web/app-based tech products
- Experience in at least one of the following frameworks - Django, Flask, Falcon, web2py, Twisted, Tornado
- Working knowledge of MySQL, MongoDB, Redis
- Good understanding of Data Structures, Algorithms, and Operating Systems
- You've worked with core AWS services in the past and have experience with EC2, ELB, AutoScaling, CloudFront, S3
- You can dabble in Frontend codebases using HTML, CSS, and Javascript
- You love doing things efficiently.The works you will have a disproportionate impact on the business. We believe in systems and processes that let us scale our impact to be larger than ourselves
- You might not have experience with all the tools that we use but you can learn those given the guidance and resources
What You'll Do
You will be part of our data platform & data engineering team. As part of this agile team, you will work in our cloud native environment and perform following activities to support core product development and client specific projects:
- You will develop the core engineering frameworks for an advanced self-service data analytics product.
- You will work with multiple types of data storage technologies such as relational, blobs, key-value stores, document databases and streaming data sources.
- You will work with latest technologies for data federation with MPP (Massive Parallel Processing) capabilities
- Your work will entail backend architecture to enable data modeling, data queries and API development for both back-end and front-end data interfaces.
- You will support client specific data processing needs using SQL and Python/Pyspark
- You will integrate our product with other data products through Django APIs
- You will partner with other team members in understanding the functional / non-functional business requirements, and translate them into software development tasks
- You will follow the software development best practices in ensuring that the code architecture and quality of code written by you is of high standard, as expected from an enterprise software
- You will be a proactive contributor to team and project discussions
Who you are
- Strong education track record - Bachelors or an advanced degree in Computer Science or a related engineering discipline from Indian Institute of Technology or equivalent premium institute.
- 2-3 years of experience in data queries, data processing and data modeling
- Excellent ANSI SQL skills to handle complex queries
- Excellent Python and Django programming skills.
- Strong knowledge and experience in modern and distributed data stack components such as the Spark, Hive, Airflow, Kubernetes, Docker etc.
- Experience with cloud environments (AWS, Azure) and native cloud technologies for data storage and data processing
- Experience with relational SQL and NoSQL databases, including Postgres, Blobs, MongoDB etc.
- Familiarity with ML models is highly preferred
- Experience with Big Data processing and performance optimization
- Should know how to write modular, optimized and documented code.
- Should have good knowledge around error handling.
- Experience in version control systems such as GIT
- Strong problem solving and communication skills.
- Self-starter, continuous learner.
Good to have some exposure to
- Start-up experience is highly preferred
- Exposure to any Business Intelligence (BI) tools like Tableau, Dundas, Power BI etc.
- Agile software development methodologies.
- Working in multi-functional, multi-location teams
What You'll Love About Us – Do ask us about these!
- Be an integral part of the founding team. You will work directly with the founder
- Work Life Balance. You can't do a good job if your job is all you do!
- Prepare for the Future. Academy – we are all learners; we are all teachers!
- Diversity & Inclusion. HeForShe!
- Internal Mobility. Grow with us!
- Business knowledge of multiple sectors
Location – Gurugram (currently work from home)
Job Description –
• Should have worked upon various Python Frameworks Django
• Should have good knowledge of MySql, MongoDB, Hadoop, Big Data, Docker.
• Should have a good understanding of API development in XML and JSON
• Should have worked upon at least one cloud provider such as Google Cloud or AWS
• Should have worked upon Google APIs integration
• Familiarity with SOA (micro-services/message buses/ etc.)
• Should always be ready with new innovative ideas
• Should have the ability to transform the requirements into scalable and smart code
• Responsible for Unit design and coding Responsible for implementing and following standards and guidelines with coding best practices in mind.
• Should be able to work with developers and architects, to ensure bug-free and timely delivery of allocated development tasks.
• Responsible for conducting proper unit testing.
• Should be able to take ownership of a product end-to-end
• Experience working with SAAS, and PAAS would be a plus
Requirements -
• Eligibility BE/ B Tech/ M Tech/ MCA
• Degree in Computer Science or related field
• Critical thinker and problem-solving skills
• Able to contribute individually
• Good time-management skills Great interpersonal
• Education background: BE/ BTech (Computer Sc or Electronics)/ MTech/ MCA with min 70% in their 10th/ 12th/ UG/ PG.
Job Responsibilities
Design and build from cloud-based products and services with massive scale and reliability Write clean and modular code primarily in Python to create multi tenant microservices Terabyte scale data per month with SLA end to end latency and tenant fairness
Build CICD based software development model with end-to-end ownership of code delivery - starting from design/architecture, coding, automated functional/integration testing and operating/monitoring the service in production.
Use relevant technologies and cloud services like Kafka, Redis, Mongo, RDS, Spark Streaming, Redshift, Airflow to build highly performant and scalable distributed systems
Design and develop data schema and access layer to optimally store and retrieve data
Stay up to date with the latest developments in cloud computing and incorporate relevant learnings to both product features and product architecture.
Preferred Qualifications
BS/Btech (Btech Preferred) in Computer Science, Computer Engineering, Information Technology
Preferred Technical Skills:
2- 6 years of software development experience with enterprise-grade software. Must have experience in building scalable, high-performance cloud services Expert coding skills in Python, Django
In Depth experience in AWS is mandatory
Expertise in building scalable event based asynchronous systems based on the microservices architecture
Experience working with docker and kubernetes
Experience with databases such as MongoDB, Redis, RDS, RDF, Graph DB, SPARQL etc. Experience with messaging technologies such as Kafka, Pulsar, SQS
Must have expertise in building REST APIs
Strong object-oriented designing and programming experience Experience in cloud object stores: S3, Cloud Storage, Blobs, etc. Desired Technical Skills:
Open source committer in related areas like cloud technologies, kubernetes, database etc Additional Skills
Great written and verbal communication
Ability to work geo distributed cross functional group







