
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

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Key Skills required (Items in Bold are mandatory keywords) :
1. Proficiency in Python & Django
2. Solid understanding of Python concepts
3. Experience with some form of Machine Learning (ML)
4. Experience in using libraries such as Numpy and Pandas
5. Some form of experience with NLP and Deep Learning using any of Pytorch, Tensorflow, Keras, Scikit-learn or similar
6. Hands on experience with RDBMS such as Postgres or MySQL
7. Experience building REST APIs using DRF or Flask
8. Comfort with Git repositories, branching and deployment using Git
9. Working experience with Docker
10. Experience in deploying Django applications to AWS,Digital Ocean or Heroku


Key Responsibility Areas:
- Develop tools and applications by producing clean, efficient code.
- Determine operational feasibility by evaluating analysis, problem definition, requirements, solution development and proposed solutions
- Perform validation and verification testing and debud code.
- Work collaboratively with others to achieve goals
- Experience working in an agile environment
Required Skills:
- Experience in implementing Object-Oriented Python, Django.
- Good understanding on Django
- Experienced in interfacing with *third party API’s using REST
- Worked with varieties of Relational Databases (RDBMS) like SQLite, MySQL, PostgreSQL.
- Experience in Version Control with Git and Bitbucket.
- Experience with JIRA the development progress and tracking deadlines of the project


What kind of work will you get?
We are looking for a Python developer.
Examples of technical tasks:
Working on our backend SDK to implement APIs that will be consumed by the frontend widgets
Designing APIs for different auth recipes
Architecting auth flows
You will also be given non technical tasks like product brain storming, competitor analysis and writing documentation.
Note: Compensation is as per the applicant's geography
Requirements
Well versed in Python with 2+ years of professional experience
Familiar with and comfortable working with Web frameworks like FastAPI, Django and Flask
Familiar with HTTP networking in Python
Strong understanding of async and sync modes in Python
Bonus:
Contributed to open source, or have your own open source repo with a community and many github stars
Built an in-house authentication or authorization solution or worked with solutions such as Keycloak, Auth0, Ory, Okta etc


Role Description
This is a full-time hybrid role for a Python Developer. The Python Developer will be responsible for back-end web development, software development, object-oriented programming, programming, and databases. The role is located in Navi Mumbai but offers flexibility for some remote work.
Qualifications
- Back-end web development and software development skills
- Proficiency in object-oriented programming and programming languages, specifically Python
- Experience with databases, such as MySQL and PostgreSQL
- Experience with source code management tools, such as Git
- Strong problem solving and analytical skills
- Bachelor's degree in Computer Science, Computer Engineering, or related field
- Experience with algorithm design and analysis is a plus
- Experience with financial markets and trading is a plus
Required Skills:
- Candidate must have 3-4 years’ experience .
- Proficiency in Python programming language
- Strong knowledge of Django and Flask frameworks
- Experience in developing and maintaining backend applications
- Understanding of RESTful APIs and database management
- Familiarity with version control systems, such as Git
- Good problem-solving and communication skills
- Proficiency in Python programming language
- Strong knowledge of Django and Flask frameworks
- Experience in developing and maintaining backend applications
- Understanding of RESTful APIs and database management
- Familiarity with version control systems, such as Git
- Good problem-solving and communication skills



JOB POSITION- FULL TIME BACKEND ENGINEER (TRADING SYSTEMS)
Satsio is an African startup that is building a crypto exchange for both spot trading and perpetual futures trading. We have many exciting and innovative features and products in the pipeline. We are looking to add to our engineering team and we are recruiting for a full time backend engineer (trading systems).
How to apply:
After reading the job description, please complete the job application via the following link: https://forms.gle/wEdVVktX3iVLCqj59
Location
This is a fully remote position. We are accepting applications from worldwide candidates.
Remuneration
Salary range in USDT shown at the top of the advert, depending on skills, experience, and location, and subject to good performance, vesting shares of 1% of the business.
Requirements
· Proficiency in Python and expertise in working with websockets
· Proven experience in designing and implementing complex REST APIs
· Project experience with Flask and Django
· Proficient with Linux and experienced working with cloud servers
· Excellent communication skills
· Intellectually motivated and a quick learner
· Fluent in both spoken and written English
Preferences
· Proficient in C++ or another low latency language
· Experience building matching engines and trading systems
· Experience working in the crypto exchange industry
· Experience with blockchain nodes, creating blockchain wallet systems, cryptocurrency deposit and withdrawal systems and optimising network fees
· Familiar with the agile development process, Github flow, and modern software engineering practices
· Align working hours with the standard 9am-6pm UTC+1 schedule
Key Responsibilities
· Review and understand existing backend code base and make improvements where necessary
· Matching engine and improving its speed
· The system that updates user balances following user transactions and performs the necessary checks prior to permitting transactions
· Cloud server configurations and deployment and cost optimisation of resources
· Creating APIs with supporting documentation for users who trade algorithmically directly via APIs and not via the frontend
· Work on our p2p trading product and KYC process
· Building the perpetual futures trading product and integrating data from 3rd party APIs
· Performing unit tests, integrated tests, performance tests and end to end tests
· Working on various other backend tasks that the startup requires to be done
Startup culture
Our culture is one of constant innovation. Great teamwork, creativity, a passion for innovation, constantly trying to improve, being hard working, a self starter, a quick learner, taking initiative, a can do attitude, shipping product, loyalty, and having a positive mindset are all traits which we are seeking in our future colleague. We seek to create an environment whereby colleagues can see their long-term career to be with us and to flourish with us as we grow.


Fulfil’s software engineers develop the next-generation technologies that change how millions of customer orders are fulfilled by merchants. Our products need to handle information at massive scale. We're looking for engineers who bring fresh ideas from all areas into our technology.
As a senior software engineer, you will work on our python based ORM and applications that scales to handle millions of transactions every hour. This is mission critical software and your primary focus will be building robust and scalable solutions that are easy to maintain.
In this role, you will be collaborating closely with the rest of the team working on different layers of infrastructure in an international environment. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product are important.
What You’ll Do:
- Own definition and implementation of API interfaces (REST and GraphQL). We take pride in our 100% open API with over 600 endpoints.
- Implement simple solutions to complex business logic that enables our merchants to manage financials, orders and shipments across millions of transactions.
- Build reusable components and packages for future use.
- Translate specs and user stories into reviewable, test covered patches.
- Peer review code and refactor existing code.
- Integrate with our eCommerce partners (Shopify, BigCommerce, Amazon), shipping partners (UPS, USPS, FedEx, DHL) and EDI.
- Manage Kubernetes and Docker based global deployment of our infrastructure.
Requirements We’re Looking for Someone With:
- Experience working with ORMs like SQLAlchemy or Django (2-3 years)
- Experience with SQL and databases (Postgres preferred)
- Experience in developing large server side applications and microservices
- Ability to create high quality code
- Experience with python testing tools (pytest) and test automation
- Familiarity with code versioning tools like GIT
- Strong sense of ownership and leadership quality
- Experienced in the tools of our web stack- Python, Celery, Postgres, Redis, RabbitMQ
Nice to Haves:
- Prior experience at a growth stage Internet/Software company
- Experience with ReactJS, Google Cloud, Heroku
- Cloud deployment and scaling experience
Affinsys is a Cognitive CX platform that combines Human & AI realms to help businesses with customer experience management, hyper-personalization & operations automation. With laser sharp focus on Customer Experience automation for financial services, we use Deep learning, NLP, computer vision, big data, recommendation system & speech analytics fused with our domain knowledge of working with 100's of banks across 50 countries to help financial institutions shift : from legacy to latest channels (Embedded Financial services), from transactions to goal based journeys (Personalized customer experience), from reactive service provider to proactive advisor (Robo/AI based advisory), from silos to ecosystem (Open banking).






