

**Company Overview**
We are a VC-backed fintech startup developing an innovative online trading platform. As we scale, we're seeking a skilled Backend Engineer with expertise in Python to join our growing team and help build a robust, scalable infrastructure for our cutting-edge trading application.
We're based out of the UK and have our engineering team in India.
**Job Description**
We are looking for a backend developer who specialises in Python. Your role will focus on developing and maintaining the server-side logic, optimising performance, and ensuring seamless integration with the frontend. You’ll work closely with the engineering and product teams to deliver a high-quality, secure, and scalable platform.
**Responsibilities**
1. Develop and maintain server-side logic using Python
2. Design and implement APIs for seamless integration with frontend components
3. Optimise backend performance and scalability for high traffic and large data loads
4. Build and maintain databases, ensuring security, data integrity, and optimal performance
5. Collaborate with frontend engineers to ensure smooth integration between backend and frontend systems
6. Troubleshoot, debug, and optimise backend infrastructure
7. Implement data protection, security protocols, and authentication mechanisms (e.g., JWT)
8. Maintain and enhance real-time communication systems using WebSockets or similar protocols
**Required Skills**
1. Strong proficiency in Python and related technologies, knowledge of databases and SQL, and experience with web frameworks like Django or FastAPI
2. Strong analytical and troubleshooting skills, and the ability to solve problems
3. Good understanding of OOPs, task broking services, Queues, Redis
4. Familiarity with RESTful API design and integration
5. Strong understanding of database management (e.g., PostgreSQL, Redis) and caching strategies
6. Familiarity with modern authentication and authorization mechanisms (e.g., JWT, OAuth)
7. Proficiency in working with cloud hosting services (AWS, Google Cloud, etc.)
8. Experience with containerization and orchestration tools (Docker, Kubernetes)
9. Knowledge of real-time communication protocols (e.g., WebSockets, TCP, SSE)
10. Strong understanding of security best practices for server-side applications
11. Experience with version control (Git) and CI/CD pipelines
12. Minimum of 2-3.5 years of experience building scalable backend systems
**Perks**
1. Work From Anywhere Flexibility
2. Unlimited Leaves policy*
3. Competitive salary and unlimited growth opportunities
4. Insights on how HFT is done using cutting edge technology
If you’re passionate about building scalable, high-performance backend systems and want to be part of a cutting-edge fintech startup, we’d love to hear from you!

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Company Name – Wissen Technology
Group of companies in India – Wissen Technology & Wissen Infotech
Work Location - Senior Backend Developer – Java (with Python Exposure)- Mumbai
Experience - 4 to 10 years
Kindly revert over mail if you are interested.
Java Developer – Job Description
We are seeking a Senior Backend Developer with strong expertise in Java (Spring Boot) and working knowledge of Python. In this role, Java will be your primary development language, with Python used for scripting, automation, or selected service modules. You’ll be part of a collaborative backend team building scalable and high-performance systems.
Key Responsibilities
- Design and develop robust backend services and APIs primarily using Java (Spring Boot)
- Contribute to Python-based components where needed for automation, scripting, or lightweight services
- Build, integrate, and optimize RESTful APIs and microservices
- Work with relational and NoSQL databases
- Write unit and integration tests (JUnit, PyTest)
- Collaborate closely with DevOps, QA, and product teams
- Participate in architecture reviews and design discussions
- Help maintain code quality, organization, and automation
Required Skills & Qualifications
- 4 to 10 years of hands-on Java development experience
- Strong experience with Spring Boot, JPA/Hibernate, and REST APIs
- At least 1–2 years of hands-on experience with Python (e.g., for scripting, automation, or small services)
- Familiarity with Python frameworks like Flask or FastAPI is a plus
- Experience with SQL/NoSQL databases (e.g., PostgreSQL, MongoDB)
- Good understanding of OOP, design patterns, and software engineering best practices
- Familiarity with Docker, Git, and CI/CD pipelines


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


1. Proficiency in Python 3.x based web and backend development
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. Basic working knowledge of ReactJs
11. Experience in deploying Django applications to AWS,Digital Ocean or Heroku


Job Description: Python Backend Developer
Experience: 7-12 years
Job Type: Full-time
Job Overview:
Wissen Technology is looking for a highly experienced Python Backend Developer with 7-12 years of experience to join our team. The ideal candidate will have deep expertise in backend development using Python, with a strong focus on Django and Flask frameworks.
Key Responsibilities:
- Develop and maintain robust backend services and APIs using Python, Django, and Flask.
- Design scalable and efficient database schemas, integrating with both relational and NoSQL databases.
- Collaborate with front-end developers and other team members to establish objectives and design functional, cohesive code.
- Optimize applications for maximum speed and scalability.
- Ensure security and data protection protocols are implemented effectively.
- Troubleshoot and debug applications to ensure a seamless user experience.
- Participate in code reviews, testing, and quality assurance processes.
Required Skills:
Python: Extensive experience in backend development using Python.
Django & Flask: Proficiency in Django and Flask frameworks.
Database Management: Strong knowledge of databases such as PostgreSQL, MySQL, and MongoDB.
API Development: Expertise in building and maintaining RESTful APIs.
Security: Understanding of security best practices and data protection measures.
Version Control: Experience with Git for collaboration and version control.
Problem-Solving: Strong analytical skills with a focus on writing clean, efficient code.
Communication: Excellent communication and teamwork skills.
Preferred Qualifications:
- Experience with cloud services like AWS, Azure, or GCP.
- Familiarity with Docker and containerization.
- Knowledge of CI/CD practices.
Why Join Wissen Technology?
- Opportunity to work on innovative projects with a cutting-edge technology stack.
- Competitive compensation and benefits package.
- A supportive environment that fosters professional growth and learning.


Responsibilities
- Develop, deploy, and maintain scalable products
- Participate in code reviews, and design discussions to ensure code quality and distribute knowledge
- Pair with team members for functional and non-functional requirements to write well-crafted, well-tested, readable, and maintainable code.
- Help to define roadmap and architecture based on technology and business needs
- Understand business requirements and work closely with the business to provide solutions
Eligibility
- Strong expertise in Backend Python Development with skills to create APIs, integrate the functions into UI, and store and retrieve data from a variety of databases.
- Strong experience with Django/Flask.
- Strong experience in writing unit tests.
- B.Tech/B.E (Preferred CSE)


XpressBees– a logistics company started in 2015 – is amongst the fastest growing companies of its
sector. While we started off rather humbly in the space of ecommerce B2C logistics, the last 5 years
have seen us steadily progress towards expanding our presence. Our vision to evolve into a strong full-
service logistics organization reflects itself in our new lines of business like 3PL, B2B Xpress and cross
border operations.
Our strong domain expertise and constant focus on meaningful innovation have helped us rapidly evolve
as the most trusted logistics partner of India. We have progressively carved our way towards best-in-
class technology platforms, an extensive network reach, and a seamless last mile management system.
While on this aggressive growth path, we seek to become the one-stop-shop for end-to-end logistics
solutions. Our big focus areas for the very near future include strengthening our presence as service
providers of choice and leveraging the power of technology to improve efficiencies for our clients.
Job Description
XB is looking for driven & talented engineers to build highly scalable, reliable and performant cloud-
based platforms to drive the logistics business. You will have opportunities to make a big impact at XB
on the software solutions being built for Logistics businesses. We build a variety of technology products
that span multiple businesses.
The challenges that SDEs at XB solve are big (handle 50 Lakh shipments per day!) and influence the E-
Commerce business in India in coming years. We are looking for individuals who are passionate about
creating new products, features, and services from scratch while managing ambiguity and the fast pace
of the company. The challenges span areas like highly scalable and reliable orchestration
platforms, Client Integration API frameworks, Billing Solutions, Workforce Engagement. Further you may
solve complex optimization problems like Vehicle routing, Allocation, Network Optimization etc.
Roles & Responsibilities
You will be responsible for working with cross functional teams to deep dive into the
business and technology problems related to our portfolio of products, understanding the
gaps that exist in our current tools, and work within our team and with partner teams to
design best in class solutions.
You will have the opportunity to influence, invent, and design system architecture
across multiple product and technology spaces.
You will lead and mentor other talented engineers. You will be responsible for building
the best customer experience, keeping latency, security, and usability in mind.
You will interact with Product Managers and Designers and convert their vision into
a technical solution.
You will own portions of software deliverables including major critical path code from
your designs while finding opportunities to grow and mentor the team around you.
You will collaborate with other engineering leads and guide the team on software
development best practices and set examples by using them in solutions that you build.
You will own the end-to-end design of major deliverables, working closely with a team
of SDEs and Front-End Engineers to execute them. This is a high visibility and fast-paced
environment where you will make a direct impact on the customer experience and the
bottom line of the company.
You should have a commanding understanding of object-oriented design, data
structures and algorithms which you use to mentor a team of engineers. You should have
experience with agile methodologies, experience building scalable services and robust user
interfaces. We make extensive use of AWS Services (API Gateway, Lambda, SQS, etc.) and
prior experience is a plus. Experience with modern JavaScript frameworks (like angular,
react, backbone, and node.js) would be a plus.
Qualifications
Experience developing cloud software services and an understanding of design for
scalability, performance, and reliability.
Development experience defining, developing and maintaining web service API's
Demonstrated ability to mentor other software developers to maintain architectural
vision and software quality.
Experience in communicating with users, other technical teams, and senior
management to collect requirements, describe software product features, technical designs,
and product strategy.
Experience taking a leading role in building complex software systems that have been
successfully delivered to customers.
Knowledge 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.
Experience with distributed computing and enterprise-wide systems
Deep understanding of CS fundamentals including data structures, algorithms and
complexity analysis.
Experience building large-scale, high-performance systems in a complex, multi-tiered,
distributed environment.
Design and architecture expertise as well as familiarity with object-oriented analysis and
design patterns (OOA/OOD).
Ability to thrive in a fast-paced, dynamic environment.





· 4+ years in a software engineering role
· You want to work in a highly collaborative environment: we believe a team can be stronger than its individual parts
· Are independent and curious
· Are comfortable owning features from design through delivery to production
· Have experience with one or more modern programming languages
· Are willing to dive into a large code base and contribute immediately
· Enjoy writing code that is understandable, maintainable, and testable
· Collaborative and Communicative - you love being part of a diverse team, building consensus, and establishing credibility.
You are a Class-A communicator: curious, thoughtful, clear, and (mostly) correct.
· BA/BS degree from top institution; MBA or CompSci degree preferred but not required.


Candidates should have worked with Startups (IT Product Firms)
Should be from B2C Firms/Product/SaaS Firms
Key Skills: Python, Golang, Java, Distributed Systems, Cloud, Microservices Architecture, MVC, Design Patterns, Data Structure, Algorithms
Your Experience Across The Years in the Roles You’ve Played
- 6+ years of technology experience (at least 2 years in direct engineering management)
- Managing a 5-15 member engineering team in an agile product org
- Track record of collaborative working with multiple stakeholders
- Planning and analysis with effective communication skills
You’ll Be Improving & Responsible For
- Our products engineering team that works on initiatives fuelling the growth of our recent health retail insurance products
- Collaboration across cross-functional stakeholders to ensure delivery timelines are met
- Implementing product engineering best practices, and evangelizing them within the org
- Engineering management with a strong sense of ownership
- Problem solving with a clear and analytical approach and organized work habits
- Technological innovation in agile product engineering scenarios
- Product and business management principles and metrics





