
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
About
Connect with the team
Similar jobs
Description
We are seeking a skilled and detail-oriented Software Developer to automate our internal workflows, develop tools for internal use that are used by our development team.
We follow the following practices: unit testing, continuous integration CI, continuous deployment CD, and DevOps.
We have codebases in go, java, python, vue js, bash and support the development team that develops C code.
You need to like challenges, explore new fields and find solutions for problems.
You will be responsible for coordinating, automating, and validating internal workflows and ensuring operational stability, and system reliability.
Requirements
- Bachelor’s degree in Computer Science, Engineering, or related field.
- 2+ years in professional software development
- Solid understanding of software development patterns like SOLID, GoF or similar.
- Experience automating deployments for different kinds of applications.
- Strong understanding of Git version control, merge/rebase strategies, tagging.
- Familiarity with containerization (Docker) and deployment orchestration (e.g., docker compose).
- Solid scripting experience (bash, or similar).
- Understanding of observability, monitoring, and probing tooling (e.g., Prometheus, Grafana, blackbox exporter).
Preferred Skills
- Experience in SRE
- Proficiency in CI/CD tooling (e.g., GitHub Actions, Jenkins, GitLab).
- Familiarity with build tools like Make, CMake, or similar.
- Exposure to artifact management systems (e.g., aptly, Artifactory, Nexus).
- Experience deploying to Linux production systems with service uptime guarantees.
Responsibilities
- Develop new services that are needed by SRE, Field or Development Team by adopting unit testing, agile, clean code practices.
- Drive the CI/CD pipeline and maintain the workflows, using tools such as GitLab, Jenkins
- Deploy the services and implement and refine the automation for different environments.
- Operate: The services that the SRE Team developed.
- Automate release pipelines: Build and maintain CI/CD workflows using tools such as Jenkins and GitLab.
- Version control: Manage and enforce Git best practices, branching strategies (e.g., Git Flow), tagging, and release versioning.
- Collaboration: Work closely with developers, QA, and product teams to align on release timelines and feature readines
- Success Metrics
- Achieve >99% service up time with minimal rollbacks.
- Delivery in time, hold timelines.
Benefits
Enjoy a great environment, great people, and a great package
- Stock Appreciation Rights - Generous pre series-B stock options
- Generous Gratuity Plan - Long service compensation far exceeding Indian statutory requirements
- Health Insurance - Premium health insurance for employee, spouse and children
- Working Hours - Flexible working hours with sole focus on enabling a great work environment
- Work Environment - Work with top industry experts in an environment that fosters co-operation, learning and developing skills
- Make a Difference - We're here because we want to make an impact on the world - we hope you do too!
Why Join RtBrick
Enjoy the excitement of a start-up without the risk!
We're revolutionizing the Internet's backbone by using cutting-edge software development techniques. The internet and, more specifically, broadband networks are among the most world's most critical technologies, that billions of people rely on every day. Rtbrick is revolutionizing the way these networks are constructed, moving away from traditional monolithic routing systems to a more agile, disaggregated infrastructure and distributed edge network functions. This shift mirrors transformations seen in computing and cloud technologies, marking the most profound change in networking since the inception of IP technology.
We're pioneering a cloud-native approach, harnessing the power of container-based software, microservices, a devops philosophy, and warehouse scale tools to drive innovation.
And although RtBrick is a young innovative company, RtBrick stands on solid financial ground: we are already cash-flow positive, backed by major telco investors like Swisscom Ventures and T-Capital, and our solutions are actively deployed by Tier-1 telcos including Deutsche Telekom (Europe's largest carrier), Regional ISPs and City ISPs—with expanding operations across Europe, North America and Asia.
Joining RtBrick offers you the unique thrill of a startup environment, coupled with the security that comes from working in a business with substantial market presence and significant revenue streams.
We'd love you to come and join us so why don't you embrace the opportunity to be part of a team that's not just participating in the market but actively shaping the future of telecommunications worldwide
Minimum 5 years of experience in NestJS and NodeJS backend development.
● Strong expertise in microservices architecture.
● Proficient in working with SQL databases like PostgreSQL or similar.
● Hands-on experience with ORMs (e.g., TypeORM or other popular ORMs).
● Solid understanding of Swagger for API documentation.
● In-depth knowledge of REST API architecture.
● Basic understanding of Docker/containerization tools.
● Excellent debugging and problem-solving skills.
● Strong communication skills for effective collaboration across teams.
● Sound knowledge of design patterns and backend best practices.
● System design expertise (a strong plus).
● Basic knowledge of frontend technologies like React or Angular (a plus).
Requirements:
- Bachelor’s degree in computer science, computer engineering, or related field.
- Experience working with ruby on rails as well as libraries like Resque and RSpec.
- Ability to write clean ruby code.
- Proficiency with code versioning tools including Git, Github, SVN, and Mercurial.
- Familiarity with MVC, Mocking, RESTful, and ORM.
- Good understanding of front-end technologies including HTML5, JavaScript, and CSS3.
- Knowledge of server-side templating languages including Slim and Liquid.
- Familiarity with testing tools.
What You'll do
- 3-5 years of experience building scalable backends using Python
- In-depth knowledge of Python/Django or Flask
- Familiar with oauth integration Social Networking API (Facebook, Twitter, Linked In, Google+)
- Experience integrating with mobile Apps
- Django/Flask permissions model, caching, async mechanisms
- Understanding of caching, database interactions
- Able to engineer the best performing solutions and always keeping scalability in mind
What makes you a great fit:
- Strong problem solving skills
- Knowledge of data structures and algorithms
- Hungry for more responsibility and knowledge
- Passion for building robust systems that are engineered to handle failure scenarios, an undying love and attitude for maintaining coding standards
- Strong advocate for producing quality software who makes sure issues are raised and resolved
- Experience with at least one of the cloud platforms like AWS, GCP, Azure, Digital Ocean etc. (docker, Kubernetes, microservice good to have)
Must have skill-sets
- Python/ Django or Flask
- Experience required: 3 -5 years
Perks of Joining Aubergine Solutions
- 5 days working
- Flexi shift timings
- Company sponsored certifications
- Team friendly culture
- Flat hierarchy
- Carrom, Table tennis games, Cricket Tournament Participation for interested employees
- Snack-filled pantry for team members
- Group Medical Insurance (*)
Understanding of Multi-Threading and Parallel Programming.
Working knowledge of Windows Operating System Internals (Process, Threads, Memory
Management).
Application debugging skills using Visual Studio Debugger Exp on Multithreading
techniques in C#/.Net Framework C#.Net with exposure in parsing XML/XSD, XSL/XSLT
Knowledge of object oriented design, data structures, design patterns, algorithms, and
programming skills.
Experience in designing product quality GUI Experience in VC++ application development
Custom development of WPF GUI components. Familiar
This person MUST have:
- BE Computer Science, MCA or equivalent
- Cloud app development experience
- Strong knowledge of Go programming language, paradigms, constructs, and idioms
- Knowledge of common Goroutine and channel patterns
- Experience with the fullsite of Go frameworks and tools, including:
- Dependency management tools such as Godep, Sltr, etc.
- Go’s templating language
- Go’s code generation tools,such as Stringer
- Ability to write clean and effective Godoc comments
- Familiarity with code versioning tools(such as Git, SVN, and Mercurial)
Experience:
- Min 3 year experience
- Not more than 15 year experience.
- Startup experience is a must.
Location
- Remotely, anywhere in India
Timings:
- 40 hours a week but with 4 hours a day overlapping with client timezone. .
Position:
- Full time/Direct
- 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.
Role & Responsibilities -:
- Strong knowledge of PHP web frameworks such as Laravel
- Knowledge of object oriented PHP programming & Restful API
- Strong knowledge of Akamai CDN, Redis, AWS services
- Understanding of LAMP and MVC design patterns
- Basic understanding of front-end technologies, such as JavaScript, HTML5, and CSS3, JS
framework
- Knowledge of Payment Gateway
- Familiarity with MySQL/ PgSQL/ Mongo databases
- Proficient understanding of code versioning tools, such as Git
- Understanding accessibility and security compliance
- Understanding fundamental design principles behind a scalable application.
- User authentication and authorization between multiple systems, servers, and
environments
Skills:
- Building and maintenance of applications.
- Extensive understanding of project management processes, principles and
methodologies.
- Writing maintainable and high performance code.
- Keeping up with the trends in technology and being up for challenges.
Qualification:
- B. Tech in Computer Science or Bachelor’s degree in Engineering
- Master’s degree in Computer Applications /M Tec. would be preferred.
About the Role:
We are looking for a Senior Software Engineer with experience in ROR/GoLang , having 3+ yrs of experience on how best to leverage and exploit the language’s unique paradigms, idioms, and syntax. Your primary focus will be on developing Enterprise Grade Systems and programs that are scalable and maintainable. You will ensure that these packages and programs are well documented and has a reasonable test coverage. You will coordinate with the rest of the team working on different layers of the infrastructure. A commitment to collaborative problem solving, sophisticated design, and quality product is essential.
What You'll Do
- Writing scalable, robust, testable, efficient, and easily maintainable code
- Translating software requirements into stable, working, high performance software
- Playing a key role in architectural and design decisions, building toward an efficient micro services distributed architecture
What You'll Need
-
Working experience on Ruby-on-Rails(ROR)/Golang.
- Worked on enterprise grade systems
- Have designed web services
- Know how to scale systems that have database bottlenecks etc.
- Having good exposure to Microservices architecture added value.
-
Familiarity with OAuth, JWT, SSO, Authentication, and Identity Federation is an added advantage.
-
Familiar with AWS, Docker, and Kubernetes, Pods and Meshes are added advantage.
-
Experience in MySQL, Snowflake, and MongoDB is an added advantage











