Java Developer

JOB DESCRIPTION

Experience: 4-9 years

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. 4-9 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.

Roles & Responsibilities

• Participated in requirement analysis, solution design, and technical discussions with business and cross-functional teams.
• Designed, developed, and maintained scalable Spring Boot microservices following RESTful API standards.
• Built and enhanced backend services using Java 8/11/17, Spring Boot, Spring MVC, Spring Data JPA, and Hibernate.
• Developed REST APIs for communication between distributed microservices.
• Implemented Spring Security with JWT/OAuth2 for authentication and authorization.
• Worked with Apache Kafka for asynchronous messaging and event-driven communication between microservices.
• Developed business logic and data processing modules using Scala for high-performance applications.
• Integrated applications with external systems and third-party APIs using REST and SOAP web services.
• Designed and optimized SQL queries, stored procedures, and database schemas in Oracle, MySQL, or PostgreSQL.
• Implemented service discovery, centralized configuration, and API Gateway using the Spring Cloud ecosystem (Eureka, Config Server, Gateway).
• Containerized applications using Docker and deployed microservices on Kubernetes/OpenShift environments.
• Built and maintained CI/CD pipelines using Jenkins, GitLab CI, or similar DevOps tools.
• Performed unit testing and integration testing using JUnit, Mockito, and Spring Test frameworks.
• Monitored application health and performance using ELK Stack, Splunk, Prometheus, or Grafana.
• Identified and resolved production issues, performed root cause analysis, and implemented preventive solutions.

Requirements

• Bachelors/Masters in Computer Science or a related field
• 5-8 years of relevant experience
• Proven track record of Team Leading/Mentoring a team successfully.
• Experience with web technologies and microservices architecture both frontend and backend.
• Java, Spring framework, hibernate
• MySQL, Mongo, Solr, Redis, 
• Kubernetes, Docker
• Strong understanding of Object-Oriented Programming, Data Structures, and Algorithms.
• Excellent teamwork skills, flexibility, and ability to handle multiple tasks.
• Experience with API Design, ability to architect and implement an intuitive customer and third-party integration story
• Ability to think and analyze both breadth-wise (client, server, DB, control flow) and depth-wise (threads, sessions, space-time complexity) while designing and implementing services
• Exceptional design and architectural skills
• Experience of cloud providers/platforms like GCP and AWS

Roles & Responsibilities

• Develop new user-facing features.
• Work alongside the product to understand our requirements, and design, develop and iterate, think through the complex architecture.
• Writing clean, reusable, high-quality, high-performance, maintainable code.
• Encourage innovation and efficiency improvements to ensure processes are productive.
• Ensure the training and mentoring of the team members.
• Ensure the technical feasibility of UI/UX designs and optimize applications for maximum speed.
• Research and apply new technologies, techniques, and best practices.
• Team mentorship and leadership.

Summary

We are seeking a highly skilled and motivated Software Engineer with expertise in both backend development and DevOps practices. The ideal candidate will have a proven track record of designing, developing, and deploying robust and scalable backend systems, while also possessing strong knowledge of cloud infrastructure and DevOps principles. This role requires a collaborative individual who thrives in a fast-paced environment and is passionate about building high-quality software.

Responsibilities

Design, develop, and maintain backend services using appropriate technologies.

Implement and maintain CI/CD pipelines.

Manage and monitor cloud infrastructure (e.g., AWS, Azure, GCP).

Troubleshoot and resolve production issues.

Collaborate with frontend developers to integrate backend services.

Contribute to the design and implementation of database schemas.

Participate in code reviews and ensure code quality.

Contribute to the improvement of DevOps processes and tools.

Write clear and concise documentation.

Stay up-to-date with the latest technologies and best practices.

Qualifications

Bachelor's degree in Computer Science or a related field.

3+ years of experience in backend software development.

2+ years of experience in DevOps.

Proficiency in at least one backend programming language (e.g., Java, Python, Node.js, Go).

Experience with cloud platforms (e.g., AWS, Azure, GCP).

Experience with containerization technologies (e.g., Docker, Kubernetes).

Experience with CI/CD tools (e.g., Jenkins, GitLab CI, CircleCI).

Experience with monitoring and logging tools (e.g., Prometheus, Grafana, ELK stack).

Strong understanding of database technologies (e.g., SQL, NoSQL).

Excellent problem-solving and debugging skills.

Strong communication and collaboration skills.

Bonus Points

Experience with specific technologies used by our company (list technologies if applicable).

Experience with serverless architectures.

Experience with infrastructure as code (e.g., Terraform, CloudFormation).

Contributions to open-source projects.

Relevant certifications.

About us:

TAPPP(https://tappp.com/) is building the next-generation digital platform by leveraging cell-based architecture to integrate technologies like Artificial Intelligence, Rules, Workflows, Microservices, FaaS (Function as a Service), Micro-frontends, and Micro apps to create a highly extensible and cutting-edge technology platform that brings together sports fans with broadcasters, sports teams, and sportsbooks to create a marketplace for all aspects of sports and we are available across platforms via the Web, Mobile, Roku, and Tablets.

Building out this brand presents significant product and engineering challenges. At the center of solving those challenges is the TAPPP Product Engineering team which is responsible for the TAPPP product end to end.

TAPPP is led by a very able leadership team drawn from Industry leaders from companies like ESPN, Amazon, Blackhawk, Kargocard, Visa, and

many others.

The organization is flat, processes are minimal, individual responsibility is big, and there is an emphasis on keeping non-productive influences out of the everyday technical decision-making process. Upholding these philosophies will be imperative as we execute our aggressive plan of global expansion over the next 2 years.

Who are we looking for:

A coding enthusiast who loves writing elegant code and developing software systems.

As a senior java developer, you will be a part of the core product development team that is responsible for building high-performant components of the TAPPP platform.

Your responsibility:

• You will be responsible for designing, coding, reviewing, testing, and bug-fixing different modules of the software product that needs to work seamlessly across different environments.
• Write production-quality code in Java, J2EE, and Spring
• You will work in an agile team, working on the TAPPP revolutionary platform. You‘ll be using cutting-edge solutions (Spring Boot, Docker, Kafka, Redis, Continuous Delivery) for creating and maintaining high-load distributed services that are part of our messaging platform.

Mandatory technical skills:

• Hands-on experience with
• Java 1.7+
• RDBMS (MySQL/PostgreSQL)
• JPA (Hibernate or any other ORM framework)
• Spring Boot, Spring MVC, Spring Security
• Hands-on experience in writing extensible RESTful APIs
• Hands-on in Java development (all facets of development) with a sound understanding of OOAD.
• Should have excellent debugging, code review, and design review skills
• Should have a sound understanding of a Microservice based architecture

Good to have technical skills:

Kafka

GraphQL

Redis

AWS (ECS, Cloudwatch)

Other

• Strong independent contributor
• Comfortable working in a start-up environment

The position is based in Pune, India.

Role

Backend engineers at AssetSprout work on our products. They include software for Certified Financial Planners, their clients, and also internal admin tools. They work with the CTO, frontend engineers, and other backend engineers to deliver towards the company’s vision.

Responsibilities

• Develop and own product features end to end in a scalable, secure and maintainable way. The buck stops with you on whatever you own.
• Provide technical solutions through design, architecture and implementation. Wear multiple hats in delivering greenfield projects from concept to production. 
• Establish, advocate and bring your experience on coding styles, best practices, and in scaling the product from MVP to production.
• Iterate fast. Display maturity in prioritizing towards velocity while balancing quality. As a startup, we break or make on how fast we deliver.
• Teach and mentor other backend engineers. Focus on providing technical expertise and solutions regardless of how long one has been working professionally.

Requirements

• We are language and framework agnostic as long as you can pick up new technologies.
• Proficient and expert level coding skills with any of the programming languages, preferably Java, Kotlin. Experience in Python, C++, Scala etc. is welcome.
• Develop web applications and services using Spring Boot. Experience with Akka, Play, Flask, Django is welcome.
• Write automated tests with any of the frameworks. We measure success on how well your code is unit tested and integration tested.
• Advanced level understanding of RDMS systems, preferably Postgres. Working knowledge of non-relational databases such as DynamoDB, Cassandra is helpful
• Able to use CI/CD tools such as CircleCI, GitLab, Jenkins etc. and create workflows and pipelines to release to production every other day.
• Expert level understanding of RESTful APIs, pagination, networking concepts around HTTP, thread pools, and other server-side concepts.
• Solid experience of how AWS services work. Some cloud services directly relevant are Lambda, EC2, S3, Dynamo, RDS, Eventbridge, SQS, ElastiCache Redis, Load Balancers etc.

Good-to-haves

• Early or mid-stage startup experience
• Eager to work in a flat organization with no corporate politics
• Positive energy with a get-it-done attitude.
• Worked in a remote environment and high trust and high responsibility role
• Working knowledge of build systems like Gradle, Maven, Bazel, Webpack etc. We use Gradle

• Primary skills:Java,Java-Java 8,Java-Microservices,Java-Springboot

We are looking for a Backend Developer who has hands-on experience in coding, building technology blocks, help answer choice of certain platform/tech over others, help the team visualise the product with the available resources and assets. 

What you’ll do:

• Design, develop, and test functionality for the latest app design.
• Support the entire application lifecycle (concept, design, test, release, and support).
• Collaborate with cross-functional teams to define, design, and develop new features.
• Take requirements and specs from design to development and be the first line of quality assurance.
• Understand user requirements—these apps have to meet real-world scenarios.
• Support the Supersub Mobile application in its entirety, including working on bug fixes and improving application performance, reliability and stability.
• Continuously discover, evaluate, and implement new technologies to maximise development efficiency.

What you bring:

• 3+ years of experience in building Java, Node JS applications. 
• Experience in Building Robust REST APIs Using MEAN or MERN Stack. 
• Good programming skills, with the ability to Perform UI testing, Debugging Taking the ownership of the complete lifecycle of a product. 
• Solid experience with Unit Testing. 
• In-depth understanding of the entire web development process (design, development, and deployment) 
• Experience with deploying the code in AWS or AZURE is a plus. 
• Ability to write clean code and document the same to develop functional APIs and Admin Panel. 

Proven work experience in building a product is a plus. And the candidate must have an Engineering CS background.