
JOB DESCRIPTION
- Has in-depth understanding of the full software development life cycle. Deep familiarity with data & business analysis, along with modern software design &development concepts encompassing a range of languages & platforms.
- Can work within an Agile team to ensure that all key technical requirements are identified, estimated, designed, implemented, and tested.
- Can work on a collaborative cross-technology team where Java, APIs (services), PL/SQL interact with a range of business logic interfaces & systems.
- Can own small to medium scale strategic initiatives/projects, enhances process standards and best practices, and supports issues during UAT/system rollout phases.
- Understands business needs and priorities and provides thought leadership on potential solutions and the opportunities for technology to create positive impact on the business.
- Has excellent analytical and problem-solving skills that are coupled with strong communication, anticipates issues, and deals with them proactively.
- Is team oriented, highly collaborative, works effectively to build strong long-term partnerships with stakeholders at all levels of the organization and across a variety of business and IT functions.
- Self-sufficient and shows ability to lead, given the opportunity
- Demonstrates a passion for technology innovation balanced with a pragmatic approach to developing and deploying solutions that best benefit the business.
- Nimble, adaptable, able to express ideas in meetings & design discussions, comfortable with ambiguity; course correct when circumstances change.
QUALIFICATIONS
- Bachelor of Engineering / 2-3 years of experience
- Willing to work on Testing
PRIMARY SKILLS
- Hands on experience with on Java 11 with Spring Cloud Microservices ecosystem(multi-threading, data structures, design patterns and OOP practices etc).
- Ability to Query Relational Databases like DB2, Sybase and Cloud data sources like snowflake.
- Spring, SOAP & REST Web Services with on XML/JSON based data.
- Experience with DevOps tools and Git.
- Test Driven development (TDD) and experience working in a disciplined development environment.
- Exposure to Azure Cloud experience is a plus.
GOOD TO HAVE SKILLS
- Business analysis – focused on investment management process and tools.
- Some experience into Automation Testing.

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.
Connect with the team
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Job Location
Bengaluru or Remote
Job Summary
Oracle Health is seeking a Software Developer 4 with deep expertise in Java, distributed systems, and microservices to design and build highly available, secure, and scalable healthcare platforms. In this senior individual contributor role, you will drive architecture and design, lead complex technical initiatives, and mentor engineers while leveraging AI-assisted development tools to accelerate delivery and improve code quality. You will partner closely with product, architecture, and operations teams to deliver mission-critical solutions for healthcare providers worldwide.
Responsibilities
- Own end-to-end design and development of complex backend services using Java and modern frameworks for Oracle Health products.
- Define and evolve microservices-based, distributed architectures with strong focus on scalability, resiliency, performance, and observability.
- Design and implement RESTful and event-driven interfaces, data processing pipelines, and integration patterns for large-scale healthcare workloads.
- Champion the use of AI-assisted development tools (code generation, refactoring, test creation, static analysis) to improve developer productivity and engineering quality.
- Provide technical leadership across feature teams: drive design reviews, code reviews, and architectural decisions.
- Mentor and guide junior and mid-level engineers, fostering best practices in coding, testing, automation, and DevOps.
- Collaborate with product managers, architects, QA, SRE/DevOps, and cross-functional stakeholders to plan, estimate, and deliver complex releases.
- Diagnose and resolve production issues related to performance, scalability, reliability, and data integrity; lead root cause analysis and long-term fixes.
- Ensure solutions adhere to security, privacy, compliance, and regulatory requirements applicable to healthcare.
- Contribute to and help standardize shared libraries, frameworks, and platform capabilities across teams.
Required Qualifications
- 8–12 years of professional software development experience, with a strong backend and distributed systems focus.
- Expert-level proficiency in Java (Java 8+), including OOP, concurrency, data structures, algorithms, and performance tuning.
- Proven experience designing and building large-scale distributed systems and microservices in production.
- Strong hands-on experience with Spring / Spring Boot or equivalent enterprise Java frameworks.
- Deep understanding of RESTful API design, contract management, and backward compatibility in microservices ecosystems.
- Solid experience with relational databases (e.g., Oracle, PostgreSQL, MySQL), schema design, and ORM technologies.
- Experience with CI/CD pipelines, Git-based workflows, and automated testing in an Agile environment.
- Practical, regular use of AI-assisted development tools (e.g., advanced code completion, code generation, test suggestion, static analysis) as part of daily development workflows.
- Strong problem-solving skills, with demonstrated ownership of complex modules or systems from design through production support.
- Excellent communication and collaboration skills, with experience influencing technical decisions across teams.
Preferred Qualifications
- In-depth knowledge of distributed systems concepts (consistency models, fault tolerance, resiliency patterns, caching, load balancing, and observability).
- Experience with event-driven architectures and messaging platforms such as Kafka or RabbitMQ.
- Hands-on experience with containerization and orchestration (Docker, Kubernetes) in cloud environments.
- Experience with Oracle Cloud Infrastructure (OCI) or other major cloud providers (AWS/Azure/GCP).
- Familiarity with monitoring, logging, and tracing tools (Prometheus, Grafana, ELK, OpenTelemetry, etc.).
- Background in healthcare, clinical systems, financial, or other regulated domains.
- Experience driving technical roadmaps, modernization initiatives, or platform migrations.
- Exposure to applying AI/ML to software engineering workflows (intelligent code search, anomaly detection in services, test optimization, or quality analytics).
About Oracle Health
Oracle Health is transforming healthcare by delivering secure, intelligent, and scalable cloud-based solutions that improve patient outcomes and provider efficiency. As a senior engineer in the Oracle Health team, you will shape the architecture and foundation of systems that power hospitals, clinics, and health networks across the globe, leveraging Oracle’s cloud infrastructure and innovation in AI-assisted development.
Job Title : Senior Node.js Developer (SDE 2)
Experience : 5+ Years
Location : Bengaluru (Whitefield)
Work Mode : Hybrid (3 Days WFO)
Openings : 2
Notice Period : Immediate–20 Days Preferred
Role Overview :
We are looking for an experienced Senior Node.js Developer (SDE 2) professional with strong expertise in building scalable backend applications, microservices, and distributed systems in Agile environments.
Mandatory Keywords :
Node.js, JavaScript, TypeScript, GraphQL, Microservices, Cloud, REST APIs, Docker, Kubernetes, Redis, System Design.
Key Responsibilities :
• Design, develop, and deploy scalable backend systems using Node.js & TypeScript.
• Build REST APIs and GraphQL services.
• Develop secure, reusable, and high-performance applications.
• Work on microservices, cloud platforms, and production support.
• Follow best practices including TDD, testing, and DevOps processes.
• Mentor team members and contribute to technical excellence.
Mandatory Skills :
• 5+ years of software development experience.
• Strong hands-on experience in Node.js, JavaScript, TypeScript.
• Experience with Express.js/Koa/Sails.js.
• GraphQL, REST APIs, Microservices
• AWS/Azure/GCP Cloud
• Docker, Kubernetes, Redis
• Strong understanding of distributed systems, Git, and DevOps.
Good to Have :
Kafka, RabbitMQ, Apollo Federation, New Relic, Datadog, Splunk, React.js/Next.js, Jest/Mocha/Cucumber
Interview Process :
- L1 – Technical
- L2 – Coding
- L3 – System Design (HLD + LLD)
As an engineer, you will help with the implementation, and launch of many key product features. You will get an opportunity to work on a wide range of technologies (including Spring, AWS Elastic Search, Lambda, ECS, Redis, Spark, Kafka etc.) and apply new technologies for solving problems. You will have an influence on defining product features, drive operational excellence, and spearhead the best practices that enable a quality product. You will get to work with skilled and motivated engineers who are already contributing to building high-scale and high-available systems.
If you are looking for an opportunity to work on leading technologies and would like to build product technology that can cater millions of customers inclined towards providing them the best experience, and relish large ownership and diverse technologies, join our team today!
What You'll Do:
- Creating detailed design, working on development and performing code reviews.
- Implementing validation and support activities in line with architecture requirements
- Help the team translate the business requirements into R&D tasks and manage the roadmap of the R&D tasks.
- Designing, building, and implementation of the product; participating in requirements elicitation, validation of architecture, creation and review of high and low level design, assigning and reviewing tasks for product implementation.
- Work closely with product managers, UX designers and end users and integrating software components into a fully functional system
- Ownership of product/feature end-to-end for all phases from the development to the production.
- Ensuring the developed features are scalable and highly available with no quality concerns.
- Work closely with senior engineers for refining the and implementation.
- Management and execution against project plans and delivery commitments.
- Assist directly and indirectly in the continual hiring and development of technical talent.
- Create and execute appropriate quality plans, project plans, test strategies and processes for development activities in concert with business and project management efforts.
The ideal candidate is a passionate engineer about delivering experiences that delight customers and creating solutions that are robust. He/she should be able to commit and own the deliveries end-to-end.
What You'll Need:
- A Bachelor's degree in Computer Science or related technical discipline.
- 2-3+ years of Software Development experience with proficiency in Java or equivalent object-oriented languages, coupled with design and SOA
- Fluency with Java, and Spring is good.
- Experience in JEE applications and frameworks like struts, spring, mybatis, maven, gradle
- Strong knowledge of Data Structures, Algorithms and CS fundamentals.
- Experience in at least one shell scripting language, SQL, SQL Server, PostgreSQL and data modeling skills
- Excellent analytical and reasoning skills
- Ability to learn new domains and deliver output
- Hands on Experience with the core AWS services
- Experience working with CI/CD tools (Jenkins, Spinnaker, Nexus, GitLab, TeamCity, GoCD, etc.)
- Expertise in at least one of the following:
- Kafka, ZeroMQ, AWS SNS/SQS, or equivalent streaming technology
- Distributed cache/in memory data grids like Redis, Hazelcast, Ignite, or Memcached
- Distributed column store databases like Snowflake, Cassandra, or HBase
- Spark, Flink, Beam, or equivalent streaming data processing frameworks
- Proficient with writing and reviewing Python and other object-oriented language(s) are a plus
- Experience building automations and CICD pipelines (integration, testing, deployment)
- Experience with Kubernetes would be a plus.
- Good understanding of working with distributed teams using Agile: Scrum, Kanban
- Strong interpersonal skills as well as excellent written and verbal communication skills
• Attention to detail and quality, and the ability to work well in and across teams
Position Title: Senior Software Developer
Freestone Infotech is a global IT solutions company providing innovative best-in-class turnkey solutions toenterprises worldwide. http://freestoneinfotech.com/
Experience: 5+ yrs
Core Experience:
• Experience in Core Java, J2EE, Spring/Spring Boot, Hibernate, Spring REST, Linux, JUnit, Maven, Design Patterns.
• Sound knowledge of RDBMS like MySQL/Postgres, including schema design.
• Proficient in general programming, logic, problem solving, data structures & algorithms
• Exposure to Linux environment.
Secondary Skills:
• Agile / Scrum Development Experience preferred.
• Comfortable working with a microservices architecture and familiarly with NoSql solutions.
• Experience in Test Driven Development. • Good analytical, grasping and problem-solving skills.
• Excellent written and verbal communication skills.
• Hands-on skills in configuration of popular build tools, like Maven and Gradle
• Good knowledge of testing frameworks such as JUnit.
• Good knowledge of coding standards, source code organization and packaging/deploying.
• Good knowledge of current and emerging technologies and trends.
Job Responsibilities:
• Design, Development and Delivery of Java based enterprise-grade applications.
• Ensure best practices, quality and consistency within various design and development phases.
• Develop, test, implement and maintain application software working with established processes.
Education and Experience: • Bachelor’s / master’s degree in computer science or information technology or related field.
Product Based Client:
A multinational technology and e-commerce company based in the United States is widely recognized as one of the world's largest online retailers. In addition to e-commerce, it is a major player in cloud computing through its cloud services division and has expanded into areas such as streaming services, artificial intelligence, and smart devices.
Essential Job Functions:
Top 3 responsibilities
• Taking for operational work.
• Monitoring data pipelines.
• Addressing/Triaging customer tickets
Qualifications:
Exp: 1+ Years
• Skillset:Core Java, Data Structures, Al
· 3+ years of Java backed application development and implementation experience.
· Minimum of one year of experience in Cloud, AWS Engineering & Development .
· Demonstrated knowledge of Distributed and Scalable systems.
· Experience on AWS Services is a big plus, such as EC2, ECS, ECR, Lambda, Elastic Cache, API Gateway.
· Knowledge about API design standards, patterns and best-practices especially Swagger and OpenAPI 3.0, REST, SOAP, MQ, JSON, Microservices etc.
· Java Microservices, RESTful Web Services.
· Spring Boot, Spring Cloud, Hibernate.
· JMS, queues, JBoss/Wildfly.
· Tools - JUnit, Easymock, Mockito, Docker, Kubernetes, Teraform.
- 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.
Responsibilities & ownership
- Lead, build, deliver and ensure customer success of next-generation features related to scalability, reliability, robustness, usability, security, and performance of the product.
- Work on distributed systems for data processing with efficient protocols and communication, locking and consensus, schedulers, resource management, low latency access to distributed storage, auto scaling, and self healing.
- Understand and reason about concurrency and parallelization to deliver scalability and performance in a multithreaded and distributed environment.
- Lead the team to solve complex and unknown problems
- Solve technical problems and customer issues with technical expertise
- Design and deliver architectures that run optimally on public clouds like GCP, AWS, and Azure
- Mentor other team members for high quality and design
- Collaborate with Product Management to deliver on customer requirements and innovation
- Collaborate with Support and field teams to ensure that customers are successful with Dremio
Requirements
- B.S./M.S/Equivalent in Computer Science or a related technical field or equivalent experience
- Fluency in Java/C++ with 3alm+ years of experience developing production-level software
- Strong foundation in data structures, algorithms, multi-threaded and asynchronous programming models, and their use in developing distributed and scalable systems
- 5+ years experience in developing complex and scalable distributed systems and delivering, deploying, and managing microservices successfully
- Hands-on experience in query processing or optimization, distributed systems, concurrency control, data replication, code generation, networking, and storage systems
- Passion for quality, zero downtime upgrades, availability, resiliency, and uptime of the platform
- Passion for learning and delivering using latest technologies
- Ability to solve ambiguous, unexplored, and cross-team problems effectively
- Hands on experience of working projects on AWS, Azure, and Google Cloud Platform
- Experience with containers and Kubernetes for orchestration and container management in private and public clouds (AWS, Azure, and Google Cloud)
- Understanding of distributed file systems such as S3, ADLS, or HDFS
- Excellent communication skills and affinity for collaboration and teamwork
- Ability to work individually and collaboratively with other team members
- Ability to scope and plan solution for big problems and mentors others on the same
- Interested and motivated to be part of a fast-moving startup with a fun and accomplished team
Frontend - Angular js, Javascript, JSP, added advantage for RIOTjs
Websocket technologies - Added advantage
Basic understanding of Apache Tomcat










