
Card91 is simplifying business payments by providing a plug and play issuance infrastructure
to businesses for domestic and cross-border payments. Our full stack platform enables
businesses to gain control and visibility into their payment flows, controlling the entire payment
lifecycle from onboarding, to issuance, to transaction and data reconciliation. The platform
aims to provide holistic solutions around payment issuance and distribution management. Our
deep focus in payments will help us in bringing new issuance formats as well as technologies
to businesses.
The company has been founded by seasoned technology entrepreneurs who have founded
successful companies like Myntra, Mastiff Technologies earlier. Headquartered in Bangalore,
with presence in Mumbai and NCR, Card91 aims to disrupt the payment infrastructure space
in the issuer-processor segment.
Position: Python Developer
We are building our core team which will be responsible for a highly scalable, always available
microservices based backend for payment processing. The developer will be involved with the
design, implementation, and execution from day one and build a robust, secure, and scalable
payment processing engine.
Roles & Responsibilities
● Individual Contributors talking full ownership of the micro services
● Design and Implement the micro services from scratch
● Be creative and always try to evaluate new strategies to execute faster
● Team player and always eager to teach new team members about the code,
● structure and design
● Not afraid of bringing new designs (even languages) which will make the system
execute faster
Experience and Qualifications
● Having 2 - 5 years of experience
● Degree from a premier institute like IIT/NIT/BITS is desirable
● A strong expertise in Python framework (like Django, Flask or Pyramid)
● Experience in creating APIs with design standards, patterns and best-practices
● Knowledge of object-relational mapping (ORM)
● GoLang experience is a big plus
● Experience building web services in REST
● knowledge and hands-on experience in API security standards and implementation
(Oauth, OpenId)
● Experience in developing highly scalable and reliable web applications, including
integration with internal and external systems.
● Experience in databases like MySQL and NoSQL db like Cassandra, etc.
● Experience with Cloud computing AWS & Microservices architecture
● Exposure to front end technologies like VueJS, ReactJS etc is an advantage
● Docker & Kubernetes experience is a big plus
● Previous experience of Fintech company is an added advantage
What’s on offer
● Vibrant, fun and rewarding culture that nurtures and promotes excellence
● Opportunities to learn and interact with payment industry leaders
● Competitive remuneration, group health insurance & PF
● Other office perks of being part of an early-stage startup
Location: HSR Layout, Bangalore

About Card91
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Job Title : Senior Java Developer
Experience : 6+ Years
Shift Timing : 01:00 PM to 10:00 PM
Domain : Clinical Research
Location : Noida, Gurgaon & Pune
Mandatory Skills :
Java 8+, Hibernate, Oracle, PostgreSQL, JAX-RS (RestEasy), Jackson, REST APIs, JSP, React.js, GitHub, GitHub Actions, SonarQube, SonarLint, and AWS (IAM, SNS, SQS, S3, CloudWatch).
Job Summary :
We are looking for an experienced Senior Java Developer with 6+ years of experience to join the software development team of a leading Clinical Research organization.
The role involves developing and enhancing enterprise applications, building scalable APIs, and contributing to feature development while ensuring code quality and best practices.
Key Responsibilities :
- Develop and maintain enterprise applications using Java 8+ and Hibernate.
- Design and consume RESTful APIs using JAX-RS (RestEasy) and Jackson.
- Work with Oracle and PostgreSQL databases, including complex query writing.
- Develop UI components using JSP and React.js.
- Utilize GitHub and GitHub Actions for version control and CI/CD processes.
- Ensure code quality through SonarQube and SonarLint.
- Work with AWS services including IAM, SNS, SQS, S3, and CloudWatch.
- Collaborate with cross-functional teams to deliver high-quality solutions.
Note : Candidates should preferably be sourced from organizations within the Grid ecosystem.

Job Requirements:
- experience with API development, Rest API and Web socket
Proven experience in software and application development, preferably as a .NET Developer
- Experience in working with SQL Server, .net core, ASP.NET framework and architectural patterns such as MVC
- Good understanding in Web API/Rest API
- Good at HTML, CSS3, jQuery and Java Script/Typescript
- Ability to take quick decisions while working in a fast-paced environment
- Strong understanding of Agile methodologies.
Responsibilities and Duties:
- Develop software solutions by studying information needs; conferring with users, studying systems flow, data usage and work processes, investigating problem areas, following the software development lifecycle
- Ensure high-level performance and responsiveness of all the .NET applications.
- Solid understanding of the data structure & algorithms.
- Prepare and install solutions by determining and designing system specifications, standards and programming
- Provide information by collecting, analyzing and summarizing development and service issues
- Understand business needs and know how to create the tools to manage them
- Production quality code is must to have better performance of the application.
- Should think out of the box and research on to adapt optimized technical solutions.
website: www.glansolutions.com
Required Skills & Qualifications
- Bachelor's/Master’s in Computer Science or related field
- 5–8 years of backend development experience
- Strong in Java, Spring Boot, REST APIs, and microservices
- Hands-on experience with MySQL/PostgreSQL and NoSQL databases
- Strong debugging, problem-solving, and communication skills
- Ability to work independently and in cross-functional teams
Preferred Traits
- Proactive mindset with a knack for identifying and fixing bottlenecks
- Detail-oriented with a passion for clean, maintainable code
Team-oriented with a drive for continuous learning and improvement
Responsibilities
- Participate in the entire application lifecycle, focusing on coding and debugging
- Write clean code to develop functional web applications
- Troubleshoot and debug applications
- Perform UI tests to optimize performance
- Work individually and closely with other members of the team during code sprints to deliver a complete end-to-end solution.
- Articulate project status to other team members and management.
- Participate in brainstorming sessions and contribute ideas to our technology, algorithms and products.
- Work with the product and design teams to understand end-user requirements, formulate use cases, and then translate that into a pragmatic and effective technical solution.
Qualifications
- Sharp analytical abilities, proven design skills, excellent communication skills experience handling the independent execution with minimal guidance, prior hands on experience or understanding on working with Django and python.
-
1 years experience with Django.
- Must be from Tier 1 University.
We are looking for a PHP Developer who is dedicated to
the craft, writes code that they are proud of, and can hit
the ground running. You will be a part of a full-stack
creative team that is responsible for all aspects of the
ongoing software development from the initial
specification, to developing, testing, and launching.
Requirements
3-5 years of exp in building web applications using
PHP (Laravel framework)
Very good in build rich UI using HTML/CSS and
Jquery
Good understanding of databases like MySQL,
PostgreSQL, etc.
Responsibilities
Write clean and well-designed codes
Produce detailed specifications
Troubleshoot, test, and maintain the core product software and databases to ensure strong optimization and functionality.
Contribute to all phases of the development lifecycle
Follow industry best practices
Develop and deploy new features to facilitate related procedures and tools if necessary
As a Senior Principal Engineer, you’ll lead a team of engineers through challenging development projects. Come join a highly collaborative team of skilled engineers with a passion for quality.
What You’ll do:
- Work in an agile environment, orchestrating a group mostly comprised of skilled PHP engineers of various levels to complete User Stories authored by professional Product Managers
- Architect highly scalable/transaction heavy web/API applications
- Work with 1-2 Frontend resources (in addition to backend PHP) through projects in React, Angular (maintenance), MooTools/Jquery (deprecation), Socket.io and serverside NodeJS
- Work with Product and QA Managers in multiple grooming sessions and sprint planning for your team
- Collaborate/coordinate with other Engineering Managers and Leads
- Work with QA and Application Support teams to triage bugs
- Work with DevOps to automate deployment and monitoring of applications
- Design and develop Restful APIs using frameworks with design patterns
- Design JSON payloads and various payload contexts
- Convert complex business rules and workflows from User Story requirements into SalesForce type CRM applications and client facing web portals
- Work with monolithic legacy codebases, along with design patterns in newer repositories
- Work with large database schemas of 500+ tables
- Write complex queries. Efficiently joining upwards of 20 tables, some containing +10m rows. In T-SQL or Doctrine ORM
- Integrate 3rd party platforms via APIs and callbacks
- Write Unit tests and documentation
What You Have:
- 10+ years professional experience developing APIs & web based applications in PHP as an individual contributor
- Prior experience working with organized development teams (5+ member pods)
- Prefer hands-on experience using MS SQL Server, CosmosDB, but other relational databases/NoSQL ok (MySQL, Postgres, MongoDB)
- Professional experience using open source PHP frameworks. Symfony3+ preferred (Laravel, CodeIgniter - ok)
- Experience scaling in LAMP, but also leveraging Redis, RabbitMQ, Elastic Search (ELK), SupervisorD, Socket.io, centralized Session stores
- Prefer experience designing fault tolerant architecture on cloud deployments (loadbalancing, clustering, reducing/eliminating single points of failure, etc)
- Understand branching, merging, pull requests and conflict resolution in Git (Bitbucket or Github)
- Experienced in leveraging issue tracking systems and wikis for documentation (Jira/Confluence)
- Comfortable on CentOS Linux, command line, SSH, SFTP, SCP…
- Full stack is a plus (JavaScript, CSS, HTML, React/Angular/Vue)
- Able to onboard self and others while working entirely remotely in EST
- Experience in Azure PaaS and IaaS
- Experience crafting architecture diagrams in Visio or LucidChart
- Problem solving skills and a proactive work style
- Strong interpersonal & communication skills
At least 2-3 years of experience as a java developer and 2-3 years of experience in java application development Experience with spring boot, micro services development.
Experience creating & consuming Rest APIs Experience with core java, Java 8, spring, spring boot, micro services, Restful web services Experience with multithreading, collections, design patterns Experience in Java 8 or above Cloud experience mentioning the specific cloud needs to be included CI/CD experience using specific tools needs to be included Salary Range- upto 10LPA
Preferred- Immediate Joiners
Job Location - Airoli, Maharashtra
- 5+ years of object-oriented software development of web applications
- 5+ years of C# in a .NET environment
- Preferable Experience in Cloud Technologies (AWS, AZURE)
- Experience with MS SQL stored procedures, database design and optimization
- Experience developing and utilizing web services
- Experience with high volume consumer oriented web sites
- Experience working in an Agile Scrum environment
- Experience with formal test procedures, release management
- Preferable Travel industry experience preferred, especially programming associated with GDS’s - SABRE, Farelogix, and Travelport
- Ability to distill complex business needs into functional requirements
- Excellent follow-up, verbal and written communication skills
- Excellent problem solving skills and an ability to make good decisions
- Team player with a professional attitude
- Ability to manage multiple tasks and maintain tight schedules
- Ability to work effectively with a geographically dispersed team in India
Strategic and Development Responsibilities
- Ability to "think outside the box"
- Ability to provide accurate and timely project estimates.
Pluses:
- Experience with Angular JS frameworks and Mobile Development.
- Experience with developing machine learning algorithms.
- Experience on projects that required localization/globalization
- Experience with MS SQL Reporting Services
- Knowledge of web farm configuration and best practices
Software Tools/Languages
Required: MS Visual Studio, MS SQL Server Management Studio, IIS, AWS
C#, Web Services, MS SQL (stored procedures), Jenkins, DevOps Tools.
Education
Bachelor of Science in CS, MIS, or equivalentWe’re looking for a Senior Backend Engineer to help us build the tools, services, and applications that will enable us to be the planet’s most patient-focused pharmacy. You will work on projects ranging from greenfield initiatives to matured products with an active user base.
What you’ll do:
- Collaborate with engineering team to design and implement products using event driven micro-services architecture.
- Interact with Product Managers and key stake-holders on regular basis to understand and execute Product vision.
- Take charge of end-to-end feature development, right from proof-of-concept to production deployment and support
- Brainstorm and lead continuous improvement projects for product
- Providing feedback to peer developers on code quality and development standards.
- Mentoring team on strong coding and design standards.
- Setting the bar high for development practises while striking the right balance between pragmatism and perfection for code and processes.
- Effectively document API's and services using Swagger/OpenAPI, visualize flow and dependencies using diagrams, and create technical documents on engineering wikis.
- Present crisp and clear feature demos to stakeholders.
Some of our opensource projects- https://meet.google.com/linkredirect?authuser=0&dest=https%3A%2F%2Fgithub.com%2Fmedly">https://github.com/medly
Your tool-belt:
We don’t expect anybody to be an expert on all of these, but you should be deeply familiar with some, and a self-starting learner who isn’t afraid to ask for help:
- Polyglot Development (at least 1 more lang apart from Java and JavaScript)
- At least one JVM language
- Functional Programming,
- OO Design, Clean Code, SOLID principles
- Solid grasp on HTTP, and REST
- Web based SaaS product development
- Deployment to AWS or any cloud
- Test Driven Development,
- Security Compliance like HIPAA, PCI-DSS, SOC2
- Git, Linux, CI/CD, Gradle, IDEA
- Security based on OAuth2 / OIDC
- SQL and NoSQL DBs like PostgreSQL, DynamoDB, ElasticSearch
- Docker
- SQL Migration tools like Liquibase, Flyway
- Semantic Versioning, Feature Toggles, PR, Feature Branches
What you`ll need:
- 3+ Years of experience mainly on Backend Development using any two languages (Java, Kotlin, NodeJS, Ruby etc.)
- Minimum a bachelor degree in Computer Science, Engineering or any related field.
You will work on the following:
- Develop service/APIs using Kotlin/Micronaut Node/Serverless
- Aurora Serverless PostgreSQL DB
- AWS, Lambda, API Gateway, Amplify, Cognito, Okta
- Github, Github Actions, SonarCloud
- Database versioning using tools like Liquibase
- Terraform to manage infra
- Cloudwatch/AWS X-Ray to monitor the infra
- Opportunity to make Open Source Contribution










