



- Working with Databases and Linux platform
- Understanding algorithms, databases and their space and time complexities
- Writing unit and integration tests with reasonable coverage of code and interfaces
- Solving complex and interesting problems
- Taking up a high level of ownership and commitment towards the business and product vision
What you need to have:
- Minimum 1-year experience
- Strong problem-solving skills
- Good understanding of data structures & algorithms and their space & time complexities
- Strong hands-on and practical working experience with at least one programming language: C/Java/C++/C#
- Excellent coding skills – should be able to convert the design into code fluently
- Strong technical aptitude and a good knowledge of CS fundamentals
- Hands-on experience working with Databases and Linux platform is a plus
- B-Tech in Computer Science or equivalent from a reputed college
- Good experience in at least one general programming language (Java, Ruby, Clojure, Scala, C/C++, Python and SQL)
- A solid foundation in computer science, with strong competencies in data structures, algorithms, and software design.
- Have a penchant for solving complex and interesting problems, Worked in startup like environment with high levels of ownership and commitment
- Excellent coding skills – should be able to convert design into code fluently
- Good skills to write unit & integration tests with reasonable coverage of code & interfaces
- TDD is a plus

Similar jobs
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
Hello Everyone,
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. - 5 to 14 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 clientfacing 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 hassuccessfully 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.
We are seeking an experienced and highly skilled Technical Lead with a strong background in Java, SaaS architectures, firewalls, and cybersecurity products, including SIEM and SOAR platforms. The ideal candidate will lead technical initiatives, design and implement scalable systems, and drive best practices across the engineering team. This role requires deep technical expertise, leadership abilities, and a passion for building secure and high-performing security solutions.
Key Roles & Responsibilities:
- Lead the design and development of scalable and secure software solutions using Java.
- Architect and build SaaS-based cybersecurity applications, ensuring high availability, performance, and reliability.
- Provide technical leadership, mentoring, and guidance to the development team.
- Ensure best practices in secure coding, threat modeling, and compliance with industry standards.
- Collaborate with cross-functional teams, including Product Management, Security, and DevOps to deliver high-quality security solutions.
- Design and implement security analytics, automation workflows and ITSM integrations.
- Drive continuous improvements in engineering processes, tools, and technologies.
- Troubleshoot complex technical issues and lead incident response for critical production systems.
Basic Qualifications:
- A bachelor’s or master’s degree in computer science, electronics engineering or a related field
- 3-6 years of software development experience, with expertise in Java.
- Strong background in building SaaS applications with cloud-native architectures (AWS, GCP, or Azure).
- In-depth understanding of microservices architecture, APIs, and distributed systems.
- Experience with containerization and orchestration tools like Docker and Kubernetes.
- Knowledge of DevSecOps principles, CI/CD pipelines, and infrastructure as code (Terraform, Ansible, etc.).
- Strong problem-solving skills and ability to work in an agile, fast-paced environment.
- Excellent communication and leadership skills, with a track record of mentoring engineers.
Preferred Qualifications:
- Experience with cybersecurity solutions, including SIEM (e.g., Splunk, ELK, IBM QRadar) and SOAR (e.g., Palo Alto XSOAR, Swimlane).
- Knowledge of zero-trust security models and secure API development.
- Hands-on experience with machine learning or AI-driven security analytics.


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
RESPONSIBILITIES
- New features developed independently with the ability to document the design after understanding and evaluating the requirements with necessary groundwork on required application components
- Hands-on coding to implement the design for feature completion
- Able to write unit tests that ensures bug free code
- Able to handle the multi-tenant and performance requirements of the new features and applications.
- Integrate the new features with existing modules, deliver ready to use code meeting necessary build requirements and CI/CD requirements.
- Work with other functional groups for product, technology, QA, tech support and deployment team.
QUALIFICATIONS
The ideal candidate must have the following qualifications.
- BE/B.Tech Degree from a reputed institution with at least 7 years of relevant experience
- Hands-on experience with Core Java, J2EE with a good knowledge of its ecosystem
- Experience with JUnit, JMH like performance tuning test tools preferred
- REST API design and development experience. Usage of Swagger or other API spec tools would be preferred. Working knowledge on Spring Boot is a plus
- Hands-on experience with some of the following application components is a plus: Solr, Kafka, OpenTSDB, Elasticsearch, Janus graph or any graph DB.
- Experience with databases such as MongoDB, MySQL or PostgreSQL required.
- Familiarity with continuous integration and build tools such as Jenkins or CircleCI, Maven, Ant required
- Experience building applications using microservices architecture is highly preferred. Knowledge of Kubernetes, Docker would be ideal
- Working knowledge on public clouds like AWS or Google cloud or Azure is a plus
- Experience building scalable systems
- Strong problem solving skills and ability and interest to solve complex problems
- Interest in machine learning (ML) data science is a plus


Fulfil’s software engineers develop the next-generation technologies that change how millions of customer orders are fulfilled by merchants. Our products need to handle information at massive scale. We're looking for engineers who bring fresh ideas from all areas into our technology.
As a senior software engineer, you will work on our python based ORM and applications that scales to handle millions of transactions every hour. This is mission critical software and your primary focus will be building robust and scalable solutions that are easy to maintain.
In this role, you will be collaborating closely with the rest of the team working on different layers of infrastructure in an international environment. Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product are important.
What You’ll Do:
- Own definition and implementation of API interfaces (REST and GraphQL). We take pride in our 100% open API with over 600 endpoints.
- Implement simple solutions to complex business logic that enables our merchants to manage financials, orders and shipments across millions of transactions.
- Build reusable components and packages for future use.
- Translate specs and user stories into reviewable, test covered patches.
- Peer review code and refactor existing code.
- Integrate with our eCommerce partners (Shopify, BigCommerce, Amazon), shipping partners (UPS, USPS, FedEx, DHL) and EDI.
- Manage Kubernetes and Docker based global deployment of our infrastructure.
Requirements We’re Looking for Someone With:
- Experience working with ORMs like SQLAlchemy or Django (2-3 years)
- Experience with SQL and databases (Postgres preferred)
- Experience in developing large server side applications and microservices
- Ability to create high quality code
- Experience with python testing tools (pytest) and test automation
- Familiarity with code versioning tools like GIT
- Strong sense of ownership and leadership quality
- Experienced in the tools of our web stack- Python, Celery, Postgres, Redis, RabbitMQ
Nice to Haves:
- Prior experience at a growth stage Internet/Software company
- Experience with ReactJS, Google Cloud, Heroku
- Cloud deployment and scaling experience

Who We are
At e6data (https://e6x.io/">https://e6data.io) we’re building core algorithms that makes querying 25 - 200X more performant (i.e. faster and/or cheaper) than every other analytics platform in the world. This results in billions of dollars of value unlocked across faster analytics, savings on compute / infra, and new use cases becoming possible.
Our core team has 100+ years of combined experience and 10+ patents across diverse but complementary disciplines like real time databases, time series databases, SQL OLAP engines, distributed computing platforms, stream processing, and log analytics. Two of the founding team are second time founders with past exits.
We are passionate about solving the deepest and most important problems in computer science, and believe in making our technology available to customers regardless of their location, size, or budget. Our vision is for e6data to power every analytical workload in the world - regardless of deployment scenario (cloud, on-premise, edge), across every use case (end user queries, ETL / data pipelines), and every latency requirement (batch, streaming / real time).
What you'll do?
- Write awesome code
- The focus will be on performance of our data platform
- Identify tactical and long-term product improvements (could be code, script, etc.)
- Responsible for Planning and executing Metadata and Governance tool supports
- Build our internal Data Platform using exdata
- Adding scalable functionality to the system for new features like UDF's, sql functions etc
What are we looking for?
- Worked with Python for a minimum of 2 years
- Well versed with Django REST framework
- Knowledge of document based data stores like MongoDB
- Strong team player
- A passion for continuous learning and growth (both at a personal and team level)
- Experience (or enjoys) working in a startup will be an added advantage
Digit88 is looking for an enthusiastic, self-motivated, hands-on Java/J2EE platform engineer to join the
back-end platform engineering team for our partner. Experience with a fast-paced India/US product
start-up or a product engineering services company in a developer role, building a high-performance
real-time system is mandatory. Applicants having experience in developing and maintaining large scale
messaging platforms are preferred. Applicants must have a passion for engineering with accuracy and
efficiency, be highly motivated and organized, able to work as part of a team, and also possess the ability
to work independently with minimal supervision.
To be successful in this role, you should possess
● Bachelor's degree in Computer Science or a related field with 7-9 years hands-on experience with
Java based open source tech stack
● Expertise in Core Java, Data Structures, J2EE with proven expertise in Spring MVC, Spring boot,
Microservices architecture, Web Services (Rest) in distributed systems
● Practical experience with MySQLand/or NoSQL databases like Couchbase, DynamoDB,
Cassandra
● Practical experience with Caching frameworks Memcached/Redis, Message Queues (JMS,
RabbitMQ)
● Practical hands-on experience in JavaScript and NodeJS
● Experience in building high performance, high availability REST APIs and REST clients
● Expertise with log file analysis using one or more of ELK, Splunk, Kibana
● Prior experience with CI/CD, Container architecture - Docker/Jenkins and build scripts Maven/Ant
● Experience with Kubernetes
● Prior experience in transformation to cloud platforms is preferred
● Experience with Kafka is a definite plus
● Experience with building analytics pipeline and analytics DB is a plus
● Strong practical experience in applying design patterns, multithreading concepts to solve complex
problems, strong problem solving skills
You are someone who would easily be able to
● Study and learn the latest in AI/NLP/Chatbots domain and the messaging platform
● Work closely with the US and India engineering teams to help build the Java/Spring based backend
and REST APIs.
● Closely collaborate with the principal engineer in the India engineering team in technical excellence
and ownership of critical modules; own the development of new modules and features
● Troubleshoot live production server issues; assume leadership responsibilities in the production
issue resolution lifecycle
● Handle client coordination and be able to work as a part of a team, be able to contribute
independently and drive the team to exceptional contributions with minimal team supervision
● Perform Unit Testing and Integration testing in a Continuous Deployment scenario
● Follow Agile methodology, JIRA for work planning, issue management/tracking

They are working on using drones to neutralize terrorists hidden in deep forests.
Responsibilities
Write effective, scalable code
Develop back-end components to improve responsiveness and overall performance
Integrate user-facing elements into applications
Test and debug programs
Improve functionality of existing systems
Implement security and data protection solutions
Assess and prioritize feature requests
Coordinate with internal teams to understand user requirements and provide technical solutions
Requirements
Work experience as a Python Developer
Expertise in at least one popular Python framework (experience in Flask preferred)
Knowledge of object-relational mapping (ORM)
Familiarity with front-end technologies (like JavaScript and HTML5)
Team spirit
Good problem-solving skills
BSc in Computer Science, Engineering or relevant field





