
Mandatory Skills:
- Strong hands-on experience in Python
- Experience in Generative AI / LLMs
- Good understanding of FinTech or Banking domain
- Experience with APIs and Microservices
- SQL/Database knowledge
- Cloud platform experience (AWS/Azure/GCP)
- Strong communication and problem-solving skills

About Wissen Technology
About
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.
With offices in 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.
Leveraging our multi-site operations in the USA and India and availability of world-class infrastructure, we offer a combination of on-site, off-site and offshore service models. Our technical competencies, proactive management approach, proven methodologies, committed support and the ability to quickly react to urgent needs make us a valued partner for any kind of Digital Enablement Services, Managed Services, or Business Services.
We believe that the technology and thought leadership that we command in the industry is the direct result of the kind of people we have been able to attract, to form this organization (you are one of them!).
Our workforce consists of 1000+ highly skilled professionals, with leadership and senior management executives who have graduated from Ivy League Universities like MIT, Wharton, IITs, IIMs, and BITS and with rich work experience in some of the biggest companies in the world.
Wissen Technology has been certified as a Great Place to Work®. The technology and thought leadership that the company commands in the industry is the direct result of the kind of people Wissen has been able to attract. Wissen is committed to providing them the best possible opportunities and careers, which extends to providing the best possible experience and value to our clients.
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Job Details
- Job Title: Lead Software Engineer - Java, Python, API Development
- Industry: Global digital transformation solutions provider
- Domain - Information technology (IT)
- Experience Required: 8-10 years
- Employment Type: Full Time
- Job Location: Pune & Trivandrum/ Thiruvananthapuram
- CTC Range: Best in Industry
Job Description
Job Summary
We are seeking a Lead Software Engineer with strong hands-on expertise in Java and Python to design, build, and optimize scalable backend applications and APIs. The ideal candidate will bring deep experience in cloud technologies, large-scale data processing, and leading the design of high-performance, reliable backend systems.
Key Responsibilities
- Design, develop, and maintain backend services and APIs using Java and Python
- Build and optimize Java-based APIs for large-scale data processing
- Ensure high performance, scalability, and reliability of backend systems
- Architect and manage backend services on cloud platforms (AWS, GCP, or Azure)
- Collaborate with cross-functional teams to deliver production-ready solutions
- Lead technical design discussions and guide best practices
Requirements
- 8+ years of experience in backend software development
- Strong proficiency in Java and Python
- Proven experience building scalable APIs and data-driven applications
- Hands-on experience with cloud services and distributed systems
- Solid understanding of databases, microservices, and API performance optimization
Nice to Have
- Experience with Spring Boot, Flask, or FastAPI
- Familiarity with Docker, Kubernetes, and CI/CD pipelines
- Exposure to Kafka, Spark, or other big data tools
Skills
Java, Python, API Development, Data Processing, AWS Backend
Skills: Java, API development, Data Processing, AWS backend, Python,
Must-Haves
Java (8+ years), Python (8+ years), API Development (8+ years), Cloud Services (AWS/GCP/Azure), Database & Microservices
8+ years of experience in backend software development
Strong proficiency in Java and Python
Proven experience building scalable APIs and data-driven applications
Hands-on experience with cloud services and distributed systems
Solid understanding of databases, microservices, and API performance optimization
Mandatory Skills: Java API AND AWS
******
Notice period - 0 to 15 days only
Job stability is mandatory
Location: Pune, Trivandrum
.Net Core is preferred along with SQL or very strong .Net developer with SQL
The job requires the resource to do documentation, SQL support, development with .Net,integration,interaction with end user- mix of all activities
Job Description:
- Experienced in developing .NET Core, http://asp.net/" target="_blank">ASP.NET MVC, Web applications, WEB /REST APIs with C# Language.
- Proficient in OOP and design Skilled in the use of Structured Query Language (SQL) as a tool for retrieving, updating, inserting, deleting, manipulating, and managing data stored in enterprise databases.
- Strong knowledge of Database concepts and Relational Database Management Systems such as Microsoft SQL.
- Work closely with the other team members to meet the goals.
- Work with Quality Analysts to ensure changes are thoroughly tested before release.
- Communicating project status and timelines to business stakeholders and IT management.
As an Associate Software Engineer, you will have the opportunity to collaborate on the creation and maintenance of scalable, high-quality software as we grow. You'll work closely with the CTO and quickly gain skills and responsibilities as the team and the technical requirements grow.
Primary Responsibilities
- Develop RESTful APIs leveraging Django classes, ORM and Postgres Database
- Develop solutions that meet business objectives while leveraging industry best practices
- Write high-quality source code to program complete applications within deadlines
- Troubleshoot and debug applications
Technical Competencies
- Expertise with Python language
- Experience with Django: maintaining APIs
- Familiarity using Git, code repositories, branching and merging strategies
- Ability to break down complex concepts, tasks, or problems into more simple, understandable language and action plans
- Excellent communication skills, and attention to detail
- Good Documentation skills
Perks
- Work from home
- Flexible work schedule
- Flexible standup meetings
Interview Process
- Two technical rounds with Senior Developer and CTO
- Cultural Fit interview with Project Manager
Please do not apply if you don't have professional Django work experience.
- B.E Computer Science or equivalent
- 3 years experience with the Django framework
- Experience with building APIs (REST or GraphQL)
- Strong Troubleshooting and debugging skills
- React.js knowledge would be an added bonus
- Understanding on how to use a database like Postgres (prefered choice), SQLite,
MongoDB, MySQL.
- Sound knowledge of object-oriented design and analysis.
- A strong passion for writing simple, clean and efficient code.
- Proficient understanding of code versioning tools Git.
- Strong communication skills.
Experience:
- Min 3 year experience
- Startup experience is a must.
Location:
- Remote developer
Timings:
- 40 hours a week but with 4 hours a day overlapping with client timezone. Typically
clients are in California PST Timezone.
Position:
- Full time/Direct
Other Benefits
- We have great benefits such as PF, medical insurance, 12 annual company holidays, 12
PTO leaves per year, annual increments, Diwali bonus, spot bonuses and other
incentives etc.
- We dont believe in locking in people with large notice periods. You will stay here
because you love the company. We have only a 15 days notice period.
· Strong knowledge of core java & spring boot
· Hands-on experience on payment switch integration
· Good knowledge of ISO8583 and EMV Data.
· Hands-on experience on any database like MySQL, oracle...etc.
· Should be strong in creating/ defining Swagger specs for REST APIs, understand REST principles, Guidelines.
· In depth knowledge of Card Scheme Specifications (VISA, MasterCard, Rupay and AMEX), Card
· Well versed with payment standards and ISO8583 and EMV data (mandatory),
· Hands on experience with Switch payment integration
· Resolve technical issues for designers and developers during project lifecycle
· Excellent problem solving/troubleshooting skills on Java/J2EE technologies
· Result oriented and a versatile engineer who is expert in providing solutions, creating architecture and designs.
· Excellent communication (written and verbal) and interpersonal skills
Payment card industry preferred
As a software engineer, you will be the part of a team that focuses on building software applications that scale well. You will play a significant role in shaping our software architecture that provides measurable customer value. You understand both technology and business to know the right trade-offs to make. You will be a technical mentor for your team members. You will work closely with your peers, managers, product, design, and operations teams to create solutions that meet business requirements. You will drive engineering and operational excellence across Scatter. You will collaborate with other engineers to surface common pain points, develop solutions and evangelize best practices.
Qualifications:
2-3 years of professional software engineering experience building customer-facing web and/or mobile applications Strong coding skills using Python, Django, is mandatory. Knowledge on Html, Css, React Js, Jquery, Bootstrap or equivalent programming language is added advantage Graduated from Tier 1 or Tier 2 engineering colleges Excellent knowledge of Data Structures and Algorithms Bachelor or Master degree in Computer Science or a related discipline Experience working in an agile environment Self-quick learner and passionate problem solver Excellent debugging and troubleshooting skills, with an enthusiastic attitude to support and resolve customer problems Good oral and written communication skills Above all, an insatiable desire and ability to learn
Nice to have skills:
Experience with large-scale SaaS applications Experience building web and mobile applications Experience designing services on top of cloud infrastructure like AWS, Azure, etc Prior experience in building product from 0-1
Benefits
Ownership and autonomy to drive customer and culture initiatives Opportunity to get mentored and mentor junior engineers Remote work
Location: Bangalore
We are looking for the right Backend Developer.
What you will work on Build a scalable API platform that will enhance our customer experience & propel our logistics. You will be part of our Bangalore team of ambitious and talented engineers, who put their best together to build architecturally sound & scalable systems.
What can CasaOne promise you –
An opportunity to - increase your rate of learning exponentially by defining hard problems and solving them - partake in a high-growth journey and increase revenues 5x+ Y-o-Y - be an early innovator in the shifting trend: ‘ownership economy’ -> ‘access economy’ - build a category-defining platform for FF&E (Furniture, Fixture, and Equipment) leasing - build high-performance teams
The must-haves
• Bachelor’s or Master’s degree in engineering
• Good understanding of algorithms, data structures & design patterns
• A minimum of 4 years of work experience Experience required in
• Building distributed systems & service-oriented architecture
• Asynchronous programming, Test Driven Development (TDD)
• Writing (delightful) APIs & integration patterns
• RDBMS & NoSql databases
• Continuous integration & deployment (CI/CD) tools like git, Jenkins
• Cloud computing platforms - AWS/ Azure/ Google Cloud
Good to know CasaOne backend services are written in NodeJS. Experience in NodeJS will be handy, but it isn’t mandatory.







