Senior Software Engineer / Backend Developer

Experience: 3 to 5

Location: Bangalore

Wissen Technology is now hiring for a Senior 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 to 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 Us:

At Wissen Technology, we deliver niche, custom-built products that solve complex business challenges across industries worldwide.

Founded in 2015, our core philosophy is built around a strong product engineering mindset—ensuring every solution is architected and delivered right the first time. Our commitment to excellence translates into delivering 2X impact compared to traditional service providers. How do we achieve this? Through a combination of deep domain knowledge, cutting-edge technology expertise, and a relentless focus on quality. 

We don’t just meet expectations—we exceed them by ensuring faster time-to-market, reduced rework, and greater alignment with client objectives. We have a proven track record of building mission-critical systems across industries, including financial services, healthcare, retail, manufacturing, and more. 

Wissen stands apart through its unique delivery models. Our outcome-based projects ensure predictable costs and timelines, while our agile pods provide clients the flexibility to adapt to their evolving business needs. Whether it’s AI/ML for unstructured data processing, cloud enablement, or data engineering, Wissen leverages its thought leadership and technology prowess to drive superior business outcomes. Our success is powered by top-tier talent. Our proprietary Interview Ninja platform ensures we hire the best, building high-performing teams that deliver unmatched results. 

Today, Wissen Technology has a global footprint with 2200+ employees across offices in the US, UK, UAE, India, and Australia. Our mission is clear: to be the partner of choice for building world-class custom products that deliver exceptional impact—the first time, every time.

Website : www.wissen.com 

Java Tech Lead (5–6 Years Experience)

About the Role

We are seeking a highly skilled Java Tech Lead with 5–6 years of hands-on experience in backend engineering, architecture design, and leading development teams. 

The ideal candidate will combine strong technical expertise in Java frameworks with a deep understanding of system design, scalability, and performance optimization.

This role involves technical leadership, code reviews, and architectural decision-making for complex enterprise systems — with occasional exposure to analytics-driven and Python-based components.

Key Responsibilities

• Architect, design, and develop scalable backend systems using Java (Quarkus, Spring Boot, Spring, Java EE).
• Own the architecture — ensure modular, extensible, and high-performance service design.
• Lead and mentor a team of developers; conduct code reviews, enforce best practices, and ensure high code quality.
• Collaborate with cross-functional teams (frontend, DevOps, product, data) to deliver integrated, end-to-end solutions.
• Design and optimize database schemas (MySQL, PostgreSQL) and ensure efficient query performance.
• Implement and maintain microservices and distributed systems with strong fault tolerance and observability.
• Drive the adoption of modern development workflows — Git branching strategy, CI/CD, and code quality automation.
• Analyze system performance bottlenecks, implement monitoring, and ensure smooth production deployments.
• Contribute to architecture reviews, technical documentation, and design discussions.
• Occasionally contribute to Python-based analytics modules or automation scripts.
• Work with AWS cloud services (EC2, S3, RDS, Lambda) for deployment, scaling, and infrastructure automation.

Required Skills & Qualifications

• 5–6 years of professional experience in backend application development using Java.
• Strong proficiency in Java frameworks: Quarkus, Spring Boot, Spring, Java EE.
• Proven experience in architecture design, system decomposition, and microservices design principles.
• Solid understanding of object-oriented design (OOD), design patterns, and SOLID principles.
• Strong experience with relational databases (MySQL, PostgreSQL) and query optimization.
• Good understanding of event-driven systems, RESTful APIs, and asynchronous processing.
• Proficiency in Git for version control and team collaboration.
• Strong analytical and debugging skills; ability to diagnose complex production issues.

Good to Have

• Hands-on experience with Python for data processing or analytics integrations.
• Familiarity with AWS cloud architecture and cost optimization practices.
• Experience with CI/CD pipelines (GitHub Actions, Jenkins, GitLab CI).
• Knowledge of Docker/Kubernetes for containerized deployments.
• Exposure to NoSQL databases (MongoDB, DynamoDB, Cassandra).
• Experience with message queues (Kafka, RabbitMQ, or AWS SQS).
• Understanding of system scalability, caching (Redis/Memcached), and observability stacks (Prometheus, Grafana, ELK).

Soft Skills

• Strong leadership, mentoring, and communication skills.
• Proven ability to drive technical decisions and balance short-term delivery with long-term architectural health.
• Collaborative mindset — works closely with product, design, and operations teams.
• Passion for clean architecture, high performance, and continuous improvement.
• Self-driven with a strong sense of ownership and accountability.

Our client is looking out for an Associate Architect who has strong experience in to Technology

You will be involving in design, coding &scaling the product.

Collaborate with cross functional teams to solve complex problems.
You will be designing large scale distributed system.

Requirements:

8+ years of hands-on experience in developing, designing & scaling complex systems

Programming experience in Java, spring, Hibernate and MongoDb, micro services

• Designing, coding, and debugging software using J2EE, Spring boot,Microservices ,AWS .
• Work closely with Solution architects to understand the architecture
  design and implement software designs accordingly.
• Improving the performance of existing software.
• Providing training to other engineers and code review.
• Maintaining and upgrading existing software.
• Recommending new technologies that can help increase productivity.
• Supervising and overseeing the technical aspects of projects.
• Investigating software-related complaints and making necessary adjustments to ensure optimal software performance.
• Regularly attending team meetings to discuss projects, brainstorm ideas, and put forward solutions to any issues.
• Mentioning Software engineers on correct coding practices.

WHAT YOU’LL BE DOING: 

• Compile and analyze data, processes, and codes to troubleshoot problems and identify areas for improvement. 
• Collaborate with the front-end developers and other team members to establish objectives and design more functional, cohesive codes to enhance the user experience. 

• Develop ideas for new programs, products, or features by monitoring industry developments and trends. 
• Record data and report it to proper parties, such as clients or leadership. 
• Participate in continuing education and training to remain current on best practices, learn new programming languages, and better assist other team members. 
• Take the lead on projects, as needed. 
• Be involved and participate in the overall application lifecycle. 

• Build high-quality reusable code that can be used in the future. 
• Develop functional and sustainable web applications with clean codes. 
• Conduct UI tests and optimize performance. 
• Manage cutting-edge technologies to improve applications. 

QUALIFICATIONS: 

• Bachelor’s degree in Computer Science, Computer Programming or relevant field. Master’s Degree in a related field is preferred. 
• 5-7 years of relevant experience 
• Must be an expert programmer, skilled at computer languages such as HTML, C+++, C#, PHP, Python and Java. 
• Must understand Spring Core, Spring Boot, Spring MVC, Spring Data, JMS, Mysql, Redis, CouchDb, Micro Services, Docker, Kubernetes 
• Must be able to interpret and follow instructions related to the ultimate functionality of our IT-based product 

• Familiarity with front-end languages such as HTML, JavaScript and CSS 
• Must be comfortable with technology architecture and how a computer and its software functions. 
• Deadline driven, organized and understand how people view and understand content on the front-end 
• Proven experience in highly complex environments 
• Strong technical documentation skills 

• An ability to solve multifaceted technical issues in a fast-paced environment 
• Self-motivated and accountable for your work 
• Passionate about learning and continuous improvement 
• Excellent written and verbal communication skills 
• Ability to work overtime 

The role of software engineer here is, to develop the application software that is being used on compactors and to do thorough software testing methodically. Expertise is needed on both embedded & application development.

• Expertise on Object oriented programming.
• Highly proficient in C# & C++. Expertise on .NET Framework, ASP.NET, JavaScript, HTML & CSS.
• Proficient in windows frameworks like WPF, WCF, etc for developing desktop applications.
• Knowledge on Microsoft Azure / other cloud technologies.
• Good knowledge on C programming and some exposure to embedded software development.
• Good at unit testing and testing frameworks like gmock, gtest, etc.
• Good at developing solutions in efficient way. Good at solving problems, quick grasper & solid analysis skills.
• Automating manual activities, drive the test automation strategy by architecting new solutions.
• Analyse test results and debug test failures in fast & efficient manner.
• Strong interpersonal & communication skills – written, verbal and presentation.

• As a polyglot developer Ideally, you should have:
• 1.5+ years of development experience using any of technology java, scala, python or any similar exciting technologies.
• Hands-on experience in coding, and implementation of complex, custom-built applications Working knowledge of build tool like maven/sbt and code versioning systems like git/bitbucket/cvs/svn
• Familiarity with few databases, like MySQL, Oracle, PostgreSQL, SQL Server, NoSQL etc Great OO skills, including strong design patterns knowledge
• Good communication and ability to work in a consulting environment is essential

• Think through hard problems in a consultancy environment, and work with amazing people to make the solutions a reality Work in a dynamic, collaborative, non-hierarchical environment where your talent is valued over your job title or years of experience
• Build custom software using the latest technologies and tools Craft your own career path

• Providing solution to real problems in Bigdata world.
• RnD on using the latest tools,techniques and cloud services.
• Automating the manual-timetaking tasks.
• Hands-on coding, usually in a pair programming environment.
• Working in highly collaborative teams and building quality code
• Working in lots of different domains and client environments
• Understanding the business domain deeply

• Java, J2EE
• Microservices
• Spring Boot
• JPA, REST API, JSON, JWT, OAuth, Spring Security, Swagger
• Oracle / MySQL / Postgres DB
• Angular / React / React Native
• JIRA, Bitbucket

Must-Have -

• Excellent knowledge of Core Java and Spring
• Strong experience in REST API and web services
• Experience in Oracle / Mysql / Postgres DB
• Should be efficient with Java J2EE and related technologies
• Should have very good communication skills and analytical skills.
• Should have good knowledge in Software Development Life Cycle and Agile methodologies.
• Good knowledge of current / emerging technologies and trends
• Good analytical and problem-solving skills
• Excellent written and verbal communication skills. High levels of initiative and creativity
• Good communication skills with all stakeholders, good team player with the ability to mentor juniors

Good to Have:

• Knowledge in Banking Domain
• Full-stack developers with knowledge and understanding of Javascript and associated technologies like React, Angular, HTML5, CSS will have an advantage.