Java Developer

Wissen Technology is now hiring for Java Developer with hands on experience in Core Java, multithreading, algorithms, and data structure.

We are solving complex technical problems in the financial 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 highly motivated and expert team which has made a mark as a high-end technical consulting.

Required Skills:

Experience - 3+.

Experience in Core Java 5.0 and above, CXF, Spring.

Extensive experience in developing enterprise-scale n-tier applications for financial domain. 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, preferably Sybase database.

Good knowledge of multi-threading and high-volume server-side development.

Experience in sales and trading platforms in investment banking/capital markets.

Basic working knowledge of Unix/Linux.

Excellent problem solving and coding skills in Java.

Strong interpersonal, communication and analytical skills.

Should have the ability to express their design ideas and thoughts.

About Streamlyn

Streamlyn is a regional leader in adtech, specializing in enhancing monetization for Publishers through innovative and compelling ad products. Our ad tech engagement solutions suite empowers Publishers to elevate their business and monetize their content effectively. With a vast network of premium publisher partners across Asia, Streamlyn reaches over 100 million consumers monthly.

Job Overview

As the Tech Lead, you will play a critical role in defining the future of our advanced ad tech platform. This position requires full technical ownership of a high-impact project, where you’ll architect and implement a scalable, high-performance system while guiding a dedicated team of developers to advance our product roadmap.

In this role, you’ll balance strategic technical oversight with hands-on involvement. You will combine strategic technical leadership with hands-on involvement to oversee the platform’s scalability, reliability, and technical evolution. Success will depend on a combination of ad tech expertise, strategic vision, and strong leadership as you drive innovation and foster a high-performance engineering culture.

Roles and Responsibilities

• Independent Project Leadership: Lead a dedicated project stream within our ad tech platform, from initial architecture and design through to delivery. Take full accountability for your project’s technical vision, resource planning, and execution, ensuring it meets performance and scalability requirements.
• Strategic Technical Ownership: Define and implement a technical roadmap that aligns with Streamlyn’s goals, focusing on scalability, resilience, and innovation. Ensure project components are optimized for real-time bidding, ad serving, and data processing requirements unique to ad tech.
• Performance & Scalability: Architect a platform capable of processing billions of requests daily with minimal latency. Utilize advanced load balancing, caching, and database technologies to achieve optimal performance and reliability.
• Team Building & Mentorship: Lead a specialized team of developers, fostering an environment of technical excellence and innovation. Set high standards for code quality, maintainability, and performance while mentoring team members and encouraging growth.
• Product Innovation & Cross-Functional Collaboration: Work with product, operations, and sales teams to ensure the products and platform meet high standards and unique demands. Drive the development of cutting-edge features like custom ad units and contextual targeting to keep Streamlyn competitive.
• Ad Tech Expertise: Apply a deep understanding of ad tech—DSPs, SSPs, oRTB protocols, and header bidding frameworks—to ensure seamless integration and adherence to industry best practices.
• Team and Process Development: Drive agile methodologies and efficient development processes within your team to support responsive and high-quality delivery. Implement continuous improvement practices that optimize team productivity and platform reliability.

Qualifications

• Experience: 5+ years in software development with hands-on ad tech experience, ideally in building ad servers, header bidding solutions, oRTB (Open Real-Time Bidding) integrations, and data pipelines.
• Technical Proficiency -
• Languages: Advanced knowledge in Java and Python.
• Databases: Strong experience with MariaDB, PostgreSQL, Aerospike, and familiarity with other NoSQL technologies.
• Data Pipeline: Proven experience designing and implementing data pipelines for handling large-scale ad data in real-time, including ingestion, processing, and transformation.
• Infrastructure and Cloud: Proficiency with AWS Cloud services, including EMR, EKS, and Docker Containers. Experience with Apache Spark, Kafka, and MKS.
• Ad Tech Ecosystem Knowledge: Strong understanding of the ad tech landscape, including DSPs, SSPs, header bidding, programmatic advertising, and RTB protocols.
• Architectural Expertise: Advanced skills in designing distributed, microservices-based architectures and developing APIs for high-performance, low-latency applications. Advanced knowledge in load balancing, caching, and database technologies to enhance performance and scalability.
• System Monitoring & Optimization: Hands-on experience with monitoring and optimization tools, such as Prometheus, Grafana, or similar for system reliability.
• Data Engineering: Experience with ETL (Extract, Transform, Load) processes, data warehousing, and building data flows for analytical and reporting purposes.
• Agile and Project Management: Experience with Agile methodologies and the ability to prioritize and manage complex projects.
• Leadership Skills: Demonstrated ability to lead a team, with experience in mentorship, team building, and technical coaching. Comfortable taking ownership and accountable for team deliverables.
• Communication: Excellent communication and collaboration skills, with the ability to articulate complex technical issues and facilitate cross-functional team discussions.

What You will do

● Create beautiful software experiences for our clients using design thinking, lean and agile methodology.

● Work on software products designed from scratch using the latest cutting edge technologies, platforms and languages such as JAVA, python, Javascript, GoLang and Scala.

● Work in a dynamic, collaborative, transparent, non-hierarchical culture.

● Work in collaborative, fast-paced and value-driven teams to build innovative customer experiences for our clients.

● Help to grow the next generation of developers and have a positive impact on the industry.

Basic Qualifications

● Experience: 4+ years.

● Hands-on development experience with a broad mix of languages such as JAVA, Python, Javascript etc.

● Server-side development experience mainly in JAVA, (Python and nodeJS can be considerable)

● UI development experience in ReactJS or AngularJS or PolymerJS or EmberJS or Jquery etc. are good to have.

● Passion for software engineering and follow the best coding concepts. ● Good to great problem solving and communication skills.

Nice to have Qualifications

● Product and customer-centric mindset.

● Great OO skills, including design patterns.

● Experience with devops, continuous integration & deployment.

● Exposure to big data technologies, Machine Learning and NLP will be a plus.

Benefits

● Competitive salary.

● Work from anywhere.

● Learning and gaining experience rapidly.

● Reimbursement for basic working set up at home.

● Insurance (including a top up insurance for COVID).

Location

Remote - work from anywhere

• Strong experience in Core Java, Multi-Threading, data structures (List/Map/Set) and unit testing
• with (Junit, Mockito)
•  Strong experience with Spring Framework (Spring MVC, Spring REST, Spring Data), ORM
• frameworks (JPA, Hibernate) and RDBMS (Oracle/MySQL/Postgres)
•  Strong experience in applying Object-Oriented design principles and Design Patterns
•  Good knowledge of Multi-Tier architecture, Micro Services architecture and Service Oriented
• Architecture 
•  Exposure to AWS Cloud, NoSQL Database (Mongo, Cassandra), Message Broker (Active
• MQ/RabbitMQ/Apache Kafka) and Big Data Technologies (Hadoop/Hive/Spark)
•  Additionally, must possess capability to review code, produce technical specification document
• and knowledge of code quality tools (PMD/FindBugs/Sonar)

Position: Java Backend Developer

Experience: Atleast 3 years

Joining: Immediate

Communication Skills: Good

Mandatory requirements:

- Java 8, SpringBoot 2.x

- Backbase 6, DB 2.x, IPS 1.x, CXS 6.x

- DBS 2.19 – 2.20

- Fluent in English, ability to work in remote teams, dependable

- Problem solving skills

Desirable requirements:

- DevOps, Pipelines, Docker, Kubernets, HELM

- Backbase Identity

- Security

Required Experience and Qualifications:

-3 to 6 years of software development experience.

-Experience of working in at least 2 or 3 projects, managing or leading the entire

tasks.

-Experience from a middle size company or from a startup will be preferred.

-BE/MCA/MSc in Computers/Information technology with a good academic

record.

-Must be willing to start Immediately work from home permanent

-Can Allocate working hours (Flexible) as per Projects Requirements.

-Must have Good Internet & Good Laptop/System

Perks & Benefits:

• Great learning, innovative and development platform.
• Remote work and flexible timings.
• Reimbursement of the online learning courses on certification.
• Medical insurance coverage for you and the dependence.
• Five Working days per week.

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