
JOB DESCRIPTION
Experience: 3-5 years
Location: Bangalore
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. - 3-5 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
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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About the Role
We are looking for a Senior Backend Engineer to join our core engineering team and help build high-
throughput, low-latency services that power real-time trading at scale. What We’re Looking For
You are someone who has built backend systems in a regulated, high-stakes environment — ideally fintech, brokerage, payments, or banking. You think in terms of system reliability, data correctness, and operational
excellence. You take ownership of services end-to-end: from design and implementation through deployment, monitoring, and incident response. You communicate clearly, make pragmatic trade-offs, and hold yourself and
your peers to a high engineering bar. What You’ll Do
• Design, build, and own backend microservices for a real-time trading platform — from API contracts
through to production observability. • Work with databases, caches, and event-driven architectures to ensure high availability and data
consistency across distributed systems. • Build integrations with third-party financial services — clearing, settlement, identity verification, and
payment rails. • Define and enforce engineering standards — code reviews, testing strategies, API design conventions, and incident response processes. • Collaborate with product, design, and cross-functional teams to translate business requirements into
well-scoped technical deliverables. • Participate in on-call rotations and own production reliability for the services you build. • Mentor junior engineers and contribute to a culture of technical excellence and continuous improvement. Must-Have
• 5+ years backend engineering experience with Golang and Java in production. • Strong experience with PostgreSQL, Redis, and event-driven messaging (Kafka, NATS, or RabbitMQ). • Experience building and maintaining REST/gRPC APIs at scale with proper error handling, rate limiting, and versioning. • Understanding of financial systems — ledgers, reconciliation, order lifecycle, or payment processing.
• Experience with microservices architecture, API gateways, and service-to-service communication
patterns. • Familiarity with CI/CD pipelines, containerization (Docker/Kubernetes), and cloud infrastructure (AWS or
GCP). • Strong debugging and incident-response skills in distributed systems. Nice-to-Have
• Prior experience at a brokerage, wealth-tech, neo-bank, or payments company. • Experience with clearing broker integrations or introducing broker models. • Knowledge of compliance and regulatory requirements for cross-border financial products. • Experience with search infrastructure (Typesense, Elasticsearch). • Background in performance engineering — profiling, load testing, and latency optimization. Tech Stack
Languages Golang (primary), Java; Python (analytics/scripting)
Databases PostgreSQL, Redis, Typesense
Messaging Kafka, NATS, SSE / WebSocket
Infrastructure Docker, Kubernetes, AWS/GCP, Terraform
Integrations Clearing broker APIs, KYC providers, payment gateways
Observability Datadog / Grafana, PagerDuty, structured logging (ELK)
Role: Senior Backend Developer
Exp: 4 - 7 Years
CTC: up to 22 LPA
Key Responsibilities
- Design, develop, and maintain scalable applications using Java (Spring Boot) and Python (Flask).
- Build RESTful APIs and microservices following best practices.
- Implement event-driven architecture leveraging NATS messaging server.
- Deploy, manage, and optimize applications in Kubernetes and containerized environments.
- Develop and manage CI/CD pipelines, ensuring smooth deployment and delivery.
- Collaborate with cross-functional teams to deliver high-quality solutions.
- Write clean, maintainable, and well-documented code.
- Participate in code reviews and contribute to architectural decisions.
- Troubleshoot, debug, and optimize application performance.
Key Responsibilities:
- Design, develop, and maintain robust backend services using Core Java and Spring Boot
- Develop and optimize queries in MongoDB, including aggregation and indexing
- Build RESTful APIs and integrate third-party services
- Write clean, maintainable, and scalable code following best practices
- Collaborate with cross-functional teams to gather and implement requirements
Required Skills:
- 5+ years of experience in Core Java
- Strong expertise in Spring Boot (REST APIs, Security, Data)
- Hands-on experience with MongoDB (CRUD operations, schema design)
- Experience with Microservices architecture
Experience in Java
Experience in spring Boot
Experience in microservices
experience in Project management
Experience in leading team
Experience in customer facing
Experience in Product Management
What you will do?
Project Management
- Work with the product management team to create an engineering roadmap that aligns with the product roadmap.
- Translate engineering roadmap into executable internal projects, and own the end-to-end execution of these projects.
- Plan, execute and deliver projects as per schedule, content, and quality metrics.
- Manage the day-to-day activities of the engineering team using Agile practices.
- Keep stakeholders continually updated on the progress of projects and operations.
- Track and report engineering health metrics (such as bugs by severity, production incidents etc.)
People Management
- Hire and mentor a team of engineers
- Manage learning and development, and performance of your team.
- Own, Conceptualize and Build a tech-focused team
Technical Work
- Core stakeholder to all technical design and architecture of team.
- Review code, test plans, and deployment plans.
- Focus and Strengthen all aspects of reliability
What we look for?
Must Haves
- Experience in telecom messaging software systems.
- Experience in distributed and scalable systems.
- Communication skills - excellent written and oral communication to present complex ideas/concepts in a clear and concise manner; communicating with key stakeholders with work/project progress.
Good to Have
- Experience in telecom messaging software systems.
- Experience in distributed and scalable systems.
- Communication skills - excellent written and oral communication to present complex ideas/concepts in a clear and concise manner; communicating with key stakeholders with work/project progress
Zumen is a Cloud-based Source-to-Pay software for product manufacturing companies.Zumen enables product manufacturing companies to digitize their direct sourcing and procurement, and manage every detail of the process in a transparent, collaborative platform. With Zumen’s part life cycle management, BOM interface, supplier base visibility and product cost management, companies can build an agile, resilient supply chain and get their products to market faster. Zumen is headquartered in Delaware, USA
Responsibilities:
- Develop features and modules independently based on the overall product architecture provided.
- Research and find solutions to challenging new problems; align with technology needs of the future.
- Fully grasp the product concept and think through challenging customer variations and use cases.
- Proactively seek to identify issues and resolve them at the stages of design, deployment and QA.
- Maintain quality and ensure responsiveness of applications.
- Demonstrate a strong sense of milestone-based performance and adherence to overall development timelines.
Requirements:
Experience - 2 to 5 years experience in Java Tech stack
- Strong hands-on experience in Java, Spring Boot, microservices and Rest API.
- Good understanding of general data privacy and information security.
- Exposure to cloud securities for SAAS application development would be an added advantage.
- A good understanding of all facets of building and delivering data-centric products is desirable.
- Knowledge of code versioning tools.
A quick overview of our stack:
Python, MySQL, NoSQL, Memcache, Bigquery, Microservices.
Responsibilities
As a backend developer, you would be responsible for building, scaling, and maintaining the multiple modules, encompassing - external integration, API management, building business and operation processes, designing and defining microservices, designing multi-input/output state machines
You will be given complete ownership of modules and processes. You will work with business, product, and UI teams to work on new features and products. You are expected to drive the services/modules to maximize its business impact and customer delight.
- Acumen for good, secure API design
- Write clear and effective API documentation
- Write/review test cases for code and process coverage
- Stickler for good, clear, secure coding, both oneself and team members by code review
- Reviewing designs, code, and processes from a system security standpoint
- Defining and building micro-services
- Building systems with positive business impact Tracking module health, usage, behavior tracking, measure and improve code and processes
Requirement
You will be working on multiple projects/modules. You are expected to write code to integrate - external providers, internal business and process tools, customer-facing applications, and partner-facing applications.
- At least 1-3 years of working experience in web services, preferably in Python
- Should have built and released APIs in production
- Experience working with RDBMS and NoSQL databases
- Designing thoughtful, extensible data models
- Knowledge of identifying, defining and building micro-services
- Working knowledge of GCS, AWS, Azure or any other cloud provider
- Aggressive problem diagnosis and creative problem-solving skills
- Good communication skills - written and spoken
Good to have
- Focus on constant improvement of developer experience
- Building or Working knowledge of CI/CD
- Basic know-how of front-end technologies like AngularJS/React
- Have worked on additional languages like Javascript/Ruby
Job Location - Bangalore
Responsibilities
Work on the development backend systems for our first product
Build reliable, secure and performant backend systems
Drive test coverage and continuous delivery automation within the team
Requirements
3-5 years of software development experience
Strong computer science fundamentals
Good knowledge of Java ecosystem
Can write code that is readable, maintainable and performant
Good understanding of relational databases, transactions, entity-relationship modeling
Comfortable writing multi-threaded programs
Desired Skills and Experience
Java,J2EE,Spring,Struts
- Well versed in Core Java, OOPs concepts, collections, multi-threading, concurrency, lambdas, and streams.
- Hands-on knowledge of Spring Core, MVC, JPA, Security, transaction
- Working knowledge of REST API designing as well as development, using Spring.
- Exposure to Spring Boot, Docker, Kubernetes, OpenShift for the microservices environment.
- Savvy with SQL and database concepts.
- Ability to use frameworks like JUnit, Mockito, etc., for implementing unit testing.
- Sound understanding of code versioning tools, such as Git/bit bucket with Maven.
- Should have worked in a CI/CD environment with TeamCity/Jenkins.










