
Job Responsibilities: -
- Work on building enterprise grade applications with a strong knowledge of the .net core framework. Experience with Node JS.
- Create Libraries that would be shared across the different modules in the system that can be leveraged by multiple teams within the organization.
- Good understanding of data structures to identify the correct data structure for a specific use case.
- Build RESTful API for customer consumption. Prior knowledge building APIs is a requirement. Understanding of HTTP error codes is a must.
- Work on code in a distributed code development environment. Prior use of Git/Github is desirable.
- Work with a Unit Test platform.
- Strong knowledge on Encryption standards – Asymmetric and Symmetric.
- Create and Manage System Documentations.
Job Qualifications
- At least 4+ years of experience using C# programming language in the build of enterprise software (.net core, asp.net core, web api) – For .Net Developer
- At least 7+ years of experience using C# programming language in the build of enterprise software (.net core, asp.net core, web api). – For Lead.
- Experience handling ISO8583 message standard; Payments Industry knowledge.
- Good understanding of version control (using Git/Github).
- Experience with Unit Test framework; TDD Approach.
- Knowledge and understanding of PCI Requirements for Card processing software .
- Understanding of SQL Database and Database Design.
- Strong understating of hybrid cloud application basics based on Docker, Kubernetes, Microservices and Postgres.
- Minimal 2+ years of experience in building enterprise scale applications: coding, designing, developing, and analyzing data.
- Agile environment. AWS, Docker, Kubernetes, DevOps environment Lead levels only.
- Manage CI/CD Pipeline.
- E/B.Tech/B.Sc/MCA/Msc in Computer Science.
Company Overview
http://www.corecard.com">www.corecard.com & http://www.corecardindia.com">www.corecardindia.com
Core Card Software is a product company, to provide financial service organizations with the best card management applications to help them compete both locally and globally. Core Card Software, a leading provider of card management systems. The Core Card software solution provides the market's most feature-rich platform for processing and managing accounts receivables and a full range of card products including prepaid/stored-value, fleet, credit, debit, commercial, government, healthcare and private-label cards. Core Card have offices based in Atlanta, Bhopal & Navi Mumbai.

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Job Title : Senior Python Developer – Product Engineering
Experience : 5 to 8 Years
Location : Pune, India (Hybrid – 3-4 days WFO, 1-2 days WFH)
Employment Type : Full-time
Commitment : Minimum 3 years (with end-of-term bonus)
Openings : 2 positions
- Junior : 3 to 5 Years
- Senior : 5 to 8 Years
Mandatory Skills : Python 3.x, REST APIs, multithreading, Celery, encryption (OpenSSL/cryptography.io), PostgreSQL/Redis, Docker/K8s, secure coding
Nice to Have : Experience with EFSS/DRM/DLP platforms, delta sync, file systems, LDAP/AD/SIEM integrations
🎯 Roles & Responsibilities :
- Design and develop backend services for DRM enforcement, file synchronization, and endpoint telemetry.
- Build scalable Python-based APIs interacting with file systems, agents, and enterprise infra.
- Implement encryption workflows, secure file handling, delta sync, and file versioning.
- Integrate with 3rd-party platforms: LDAP, AD, DLP, CASB, SIEM.
- Collaborate with DevOps to ensure high availability and performance of hybrid deployments.
- Participate in code reviews, architectural discussions, and mentor junior developers.
- Troubleshoot production issues and continuously optimize performance.
✅ Required Skills :
- 5 to 8 years of hands-on experience in Python 3.x development.
- Expertise in REST APIs, Celery, multithreading, and file I/O.
- Proficient in encryption libraries (OpenSSL, cryptography.io) and secure coding.
- Experience with PostgreSQL, Redis, SQLite, and Linux internals.
- Strong command over Docker, Kubernetes, CI/CD, and Git workflows.
- Ability to write clean, testable, and scalable code in production environments.
➕ Preferred Skills :
- Background in DRM, EFSS, DLP, or enterprise security platforms.
- Familiarity with file diffing, watermarking, or agent-based tools.
- Knowledge of compliance frameworks (GDPR, DPDP, RBI-CSF) is a plus.
Java Developer – Job Description Wissen Technology is now hiring for a Java Developer - Bangalore with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL. We are solving complex technical problems in the industry and need talented software engineers to join our mission and be a part of a global software development team. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting. Required Skills: • Exp. - 4 to 7 years. • Experience in Core Java and Spring Boot. • Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns. • Should have the ability to analyze, design, develop and test complex, low-latency client facing applications. • Good development experience with RDBMS. • Good knowledge of multi-threading and high-performance server-side development. • Basic working knowledge of Unix/Linux. • Excellent problem solving and coding skills. • Strong interpersonal, communication and analytical skills. • Should have the ability to express their design ideas and thoughts. About Wissen Technology: Wissen Technology is a niche global consulting and solutions company that brings unparalleled domain expertise in Banking and Finance, Telecom and Startups. Wissen Technology is a part of Wissen Group and was established in the year 2015. Wissen has offices in the US, India, UK, Australia, Mexico, and Canada, with best-in-class infrastructure and development facilities. Wissen has successfully delivered projects worth $1 Billion for more than 25 of the Fortune 500 companies. The Wissen Group overall includes more than 4000 highly skilled professionals. Wissen Technology provides exceptional value in mission critical projects for its clients, through thought leadership, ownership, and assured on-time deliveries that are always ‘first time right’. Our team consists of 1200+ 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 offers 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. We have been certified as a Great Place to Work® for two consecutive years (2020-2022) and voted as the Top 20 AI/ML vendor by CIO Insider.
JOB DESCRIPTION
Experience: 5-8 years
Location: Mumbai
Wissen Technology is now hiring for a Java Developer - Bangalore with hands-on experience in Core Java, algorithms, data structures, multithreading and SQL. We are solving complex technical problems in the industry and need talented software engineers to join our mission and be a part of a global software development team. A brilliant opportunity to become a part of a highly motivated and expert team which has made a mark as a high-end technical consulting.
Required Skills:
- Exp. - 5-8 years
- Experience in Core Java and Spring Boot.
- Extensive experience in developing enterprise-scale applications and systems. Should possess good architectural knowledge and be aware of enterprise application design patterns.
- Should have the ability to analyze, design, develop and test complex, low-latency client- facing applications.
- Good development experience with RDBMS.
- Good knowledge of multi-threading and high-performance server-side development.
- Basic working knowledge of Unix/Linux.
- Excellent problem solving and coding skills.
- Strong interpersonal, communication and analytical skills.
- Should have the ability to express their design ideas and thoughts.
About Us:
At Wissen Technology, we deliver niche, custom-built products that solve complex business challenges across industries worldwide.
Founded in 2015, our core philosophy is built around a strong product engineering mindset—ensuring every solution is architected and delivered right the first time. Our commitment to excellence translates into delivering 2X impact compared to traditional service providers. How do we achieve this? Through a combination of deep domain knowledge, cutting-edge technology expertise, and a relentless focus on quality.
We don’t just meet expectations—we exceed them by ensuring faster time-to-market, reduced rework, and greater alignment with client objectives. We have a proven track record of building mission-critical systems across industries, including financial services, healthcare, retail, manufacturing, and more.
Wissen stands apart through its unique delivery models. Our outcome-based projects ensure predictable costs and timelines, while our agile pods provide clients the flexibility to adapt to their evolving business needs. Whether it’s AI/ML for unstructured data processing, cloud enablement, or data engineering, Wissen leverages its thought leadership and technology prowess to drive superior business outcomes. Our success is powered by top-tier talent. Our proprietary Interview Ninja platform ensures we hire the best, building high-performing teams that deliver unmatched results.
Today, Wissen Technology has a global footprint with 2000+ employees across offices in the US, UK, UAE, India, and Australia. Our mission is clear: to be the partner of choice for building world-class custom products that deliver exceptional impact—the first time, every time.
Website : www.wissen.com
Location: Bangalore.
Work from office only.
Notice period: within 30 days joiner.
Skills: C++ with windows application(c# or dot net)
Job description
- Engage with the business team and stakeholder at different levels to understand business needs, analyze, document, prioritize the requirements, and make recommendations on the solution and implementation.
- Delivering the product that meets business requirements, reliability, scalability, and performance goals
- Work with Agile scrum team and create the scrum team strategy roadmap/backlog, develop minimal viable product and Agile user stories that drive a highly effective and efficient project development and delivery scrum team.
- Work on Data mapping/transformation, solution design, process diagram, acceptance criteria, user acceptance testing and other project artifacts.
- Work effectively with the technical/development team and help them understand the specifications/requirements for technical development, testing and implementation.
- Ensure solutions promote simplicity, efficiency, and conform to enterprise and architecture standards and guidelines.
- Partner with the support organization to provide training, support and technical assistance to operation team and end users as necessary
- Product/Application Developer
- Designs and develops software applications based on user requirements in a variety of coding environments such as graphical user interface, database query languages, report writers, and specific development languages
- Consult on the use and implementation of software products and applications and specialize in the business development environment, including the selection of development tools and methodology
Primary / Mandatory skills:
- Overall Experience: Overall 4 to 6 years of IT development experience
- Design and Code NodeJS based Microservices, API Webservices, NoSql technologies (Cassandra/MongoDb)
- Expert in developing code for Node-JS based Microservice in TypeScript
- Good Experience in understanding the data Transmission through pug/sub mechanism like Event Hub and Kafka
- Good Understanding of Analytics and clickstream data capture is HUGE Plus
- Good understanding of frameworks like Java Spring Boot, Python is preferred
- Good understanding of Microsoft Azure principles and services is preferred
- Able to write Unit test cases
- Familiarity with performance testing tools such as Akamai SOASTA is preferred
- Good knowledge on Source Code control like GIT, code clout, etc and understanding of CI/CD(Jenkins and Kubernetes)
- Solid technical background with understanding and/or experience in software development and web technologies
- Strong analytical skills and the ability to convert consumer insights and performance data into high impact initiatives
- Experience working within scaled agile development team
- Excellent written and verbal communication skills with demonstrated ability to present complex technical information in a clear manner to peers, developers, and senior leaders
- The desire to be continually learning about emerging technologies/industry trends
• Experience in the financial domain preferred.
• Hands-on developer in Core Java with an excellent understanding of computer science fundamentals, data structures, algorithms and design patterns.
• Experience with frameworks like Spring, Restful Webservices, Queuing systems, Angular, and Python is highly desired.
• Deep understanding of several cloud providers such as AWS, Azure, Google etc.
• Hands-on experience developing CI/CD pipelines for continuous development and integration.
• Deep knowledge and experience of Java/J2EE and servers like Tomcat.
- Experience in Asp .NET Core,EF Core, Asp .NET Core Blazor, ASP .NET MVC, C#
- Should have experience of all aspects of Software Development Life Cycle
- Excellent problem solver, able to assimilate formation quickly
- Excellent communication skills, oral and written
- Technical expertise: Demonstrates knowledge and experience in .net development
- Strong team player; work effectively in groups; and help others to get the job done
- Decision making: ability to analyze, integrate, evaluate and make decisions
- Motivation: Establish and communicate vision. Demonstrate enthusiasm and excitement
- toward achieving project goals
- High quality standards: accuracy, proficient and thoroughness in unit testing
- Time Management: Completes work in a timely manner to meet production deadlines
- Organizational skills: Ability to establish priorities for projects to meet goals
- 4+ years’ experience in .Net .
Responsibilities:
- Follow proper coding standards, application architecture guidelines and procedural guidelines
- Manage entire asp.net team and direct communication with client along with project manager
Apart from compensation, we are welcoming with:
- Unique Growth Opportunities.
- We will provide training based on Project Requirement
- You will learn directly from expert developers in the field.
- You will get an opportunity to work on the complete lifecycle of projects
- You will get an opportunity to work on multiple technologies.
- Discretionary Bonus.
- Work from Home, Flexible Timings, Paid Vacation and much more!
- Work Days: Monday to Friday.
Immediate joiners preferred
We are looking to hire a Full-time, Remote (India) Backend engineer with a flair for writing full stack code to help create a SAAS product from the ground up in a niche industry.
This will be the v2.0 of an existing legacy platform with paying customers. This position is within the first few hires in the founding team of the revamped company.
We are on a mission to build a truly world class product and deliver at high speeds with high quality.
Read on and apply for the job if you are a doer, likes no BS, think you're competent enough to get things done, wants some quiet time every day, wants to make a difference, values work life balance and enjoy life outside work.
Experience -
At least 3 to 4 years building scalable SAAS applications in the cloud. It would be great to showcase anything progressive. Education from premier institutions, git contributions, tech blogs, volunteering, pet projects, etc.
Responsibilities -
- Architect, write, deploy and own the (SAAS) product from a technical standpoint working closely with other devs on the team
- Create and deliver the product end-to-end all the way to the user
- Write highly performant code and continuously measure performance and make the application better based on benchmarks
- Debug production issues and keep the application quality high always
- Assist with hiring more people when the team grows
- Pick up any appropriate work as in any early-stage company
General Skills Needed -
- Should be able to build and deploy multi-tenant SAAS applications end to end
- Need to have a technology-agnostic mindset. Should be able to easily pick up any new technology based on the use case.
- Should be an expert software craftsman/craftswoman. Must own the code and be proud of what you build.
- Write well thought out, well-tested code with extensive unit tests and integration tests so that the addition of future features is easy.
- Must know cloud deployment concepts and be comfortable creating and maintaining cost-effective cloud deployment strategies. AWS experience highly preferred.
- Must be able to design and architect simple, market-tested yet highly scalable solutions
- Must be able to quickly iterate and produce working software at a high speed. Must not be shy to scrap and rebuild when there is a need
- Must be appreciative of documentation and write well-documented code and technical documentation alongside
Technical Skills Needed -
- Expert level knowledge in Python and Django. We are a Python/Django/Javascript/ReactJs/AWS shop.
- Must have good knowledge/experience in creating cost-efficient and scalable cloud deployments (AWS preferred)
- Must have good knowledge of industry-standard design patterns and tools
- Must have a good understanding of various frameworks on authentication and authorization, billing and metrics
- Some experience in data analytics and reporting - creating reports based on the data collected and deliver to the frontend
- Expertise with Frameworks
- Django, or similar backend frameworks
- PostgreSQL, MySQL, any NoSQL or other database technology
Job Perks
Perks -
- Opportunity to build a SAAS product from the ground up. Lots of challenges to tackle on
- Work remotely from anywhere within India
- Emphasis on work-life balance and professional development
- Flexible work hours and a lot of autonomy
- Work with a very informal team collaborating over slack. No meaningless meetings. Focus on getting things done and not hours put in
- Opportunity to grow the team with the company
- Market salary and a yearly bonus outside the salary based on company + individual performance
- Generous PTO plan









