Java Developer

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.

We’re looking for an Engineering Manager to guide our micro-service platform and mentor a fully remote backend team. You’ll blend hands-on technical ownership with people leadership—shaping architecture, driving cloud best practices, and coaching engineers in their careers and craft.

Key Responsibilities:

Area

What You’ll Own

Architecture & Delivery

• Define and evolve backend architecture built on Java 17+, Spring Boot 3, AWS (Containers, Lambdas, SQS, S3), Elasticsearch, PostgreSQL/MySQL, Databricks, Redis etc...

• Lead design and code reviews; enforce best practices for testing, CI/CD, observability, security, and cost-efficient cloud operations.

• Drive technical roadmaps, ensuring scalability (billions of events, 99.9 %+ uptime) and rapid feature delivery.

Team Leadership & Growth

• Manage and inspire a distributed team of 6-10 backend engineers across multiple time zones.

• Set clear growth objectives, run 1-on-1s, deliver feedback, and foster an inclusive, high-trust culture.

• Coach the team on AI-assisted development workflows (e.g., GitHub Copilot, LLM-based code review) to boost productivity and code quality.

Stakeholder Collaboration

• Act as technical liaison to Product, Frontend, SRE, and Data teams, translating business goals into resilient backend solutions.

• Communicate complex concepts to both technical and non-technical audiences; influence cross-functional decisions.

Technical Vision & Governance

• Own coding standards, architectural principles, and technology selection.

• Evaluate emerging tools and frameworks (especially around GenAI and cloud-native patterns) and create adoption strategies.

• Balance technical debt and new feature delivery through data-driven prioritization.

Required Qualifications:

● 8+ years designing, building, and operating distributed backend systems with Java & Spring Boot

● Proven experience leading or mentoring engineers; direct people-management a plus

● Expert knowledge of AWS services and cloud-native design patterns

● Hands-on mastery of Elasticsearch, PostgreSQL/MySQL, and Redis for high-volume, low-latency workloads

● Demonstrated success scaling systems to millions of users or billions of events Strong grasp of DevOps practices: containerization (Docker), CI/CD (GitHub Actions), observability stacks

● Excellent communication and stakeholder-management skills in a remote-fi rst environment

Nice-to-Have:

● Hands-on experience with Datadog (APM, Logs, RUM) and a data-driven approach to debugging/performance tuning

● Startup experience—comfortable wearing multiple hats and juggling several projects simultaneously

● Prior title of Principal Engineer, Staff Engineer, or Engineering Manager in a high-growth SaaS company

● Familiarity with AI-assisted development tools (Copilot, CodeWhisperer, Cursor) and a track record of introducing them safely

Job Title: Engineering Manager (Java / Spring Boot, AWS) – Remote

Leadership Role

Location: Remote

Employment Type: Full-time

Job Summary:

We are looking for an experienced Java Developer with 4+years of hands-on experience to join our dynamic team. The ideal candidate will have a strong background in Java development, problem-solving skills, and the ability to work independently as well as part of a team. You will be responsible for designing, developing, and maintaining high-performance and scalable applications.

Key Responsibilities:

• Design, develop, test, and maintain Java-based applications.
• Write well-designed, efficient, and testable code following best software development practices.
• Troubleshoot and resolve technical issues during development and production support.
• Collaborate with cross-functional teams including QA, DevOps, and Product teams.
• Participate in code reviews and provide constructive feedback.
• Maintain proper documentation for code, processes, and configurations.
• Support deployment and post-deployment monitoring during night shift hours.

Required Skills:

• Strong programming skills in Java 8 or above.
• Experience with Spring Framework (Spring Boot, Spring MVC, etc.).
• Proficiency in RESTful APIs, Microservices Architecture, and Web Services.
• Familiarity with SQL and relational databases like MySQL, PostgreSQL, or Oracle.
• Hands-on experience with version control systems like Git.
• Understanding of Agile methodologies.
• Experience with build tools like Maven/Gradle.
• Knowledge of unit testing frameworks (JUnit/TestNG).

Preferred Skills (Good to Have):

• Experience with cloud platforms (AWS, Azure, or GCP).
• Familiarity with CI/CD pipelines.
• Basic understanding of frontend technologies like JavaScript, HTML, CSS.

Key Responsibilities:

• Rewrite existing APIs in NodeJS.
• Remodel the APIs into Micro services-based architecture.
• Implement a caching layer wherever possible.
• Optimize the API for high performance and scalability.
• Write unit tests for API Testing.
• Automate the code testing and deployment process.

Skills Required:

1. At least 2.5 years of experience developing Backends using NodeJS — should be well versed with its asynchronous nature & event loop, and know its quirks and workarounds.
2. Excellent hands-on experience using MySQL or any other SQL Database.
3. Good knowledge of MongoDB or any other NoSQL Database.
4. Good knowledge of Redis, its data types, and their use cases.
5. Experience with graph-based databases like GraphQL and Neo4j.
6. Experience developing and deploying REST APIs.
7. Good knowledge of Unit Testing and available Test Frameworks.
8. Good understanding of advanced JS libraries and frameworks.
9. Experience with Web sockets, Service Workers, and Web Push Notifications.
10. Familiar with NodeJS profiling tools.
11. Proficient understanding of code versioning tools such as Git.
12. Good knowledge of creating and maintaining DevOps infrastructure on cloud platforms.
13. Should be a fast learner and a go-getter — without any fear of trying out new things Preferences.
14. Experience building a large-scale social or location-based app.

What you need to have:

· 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

· Manage cutting-edge technologies to improve legacy applications

· Collaborate with Front-end developers to integrate user-facing elements with server- side logic

· Gather and address technical and design requirements

· Provide training and support to internal teams

· Build reusable code and libraries for future use

· Liaise with developers, designers and system administrators to identify new features

· Follow emerging technologies

Key Responsibilities 

• Build and create Credflow Product - Do development on our tech Stack 
• Understand requirements from the product manager and sometimes talk to customers to understand the exact requirement and develop insights. 
• Maintain the product and optimize over time for performance
• Identify needs of the stakeholders and work with technology and management team to build future timeline of products and features
• Be the go-to person for all technology related requirements, queries, discussion etc
• Develop a complete analytics framework as the product evolves.

What we seek

• We are looking for someone who is a hustler and is deeply passionate about solving technology-led complex problems
• The person should be able to take ownership of work in a highly challenging and dynamic startup environment

Benefits

• Chance to be with the right team, at the right time
• Work as part of the core team and experience the aspects of growing a business exponentially
• Get a deep understanding of the Fintech domain and unleash your potential to create an impact. 

Qualifications and skills

• Undergraduate/Graduate degree from an engineering college
• Has full stack proficiency, managing large amounts of data and prior exposure to backend, web frontend, mobile apps etc. 
• Full Stack Proficiency on Node.JS, React.JS
• SQL
• In memory data stores like Redis
• Experience in AWS (preferable)

Experience

2-4 years of experience 

Preference

Previous experience in a startup or as an entrepreneur