JAVA DEVELOPER

JOB DESCRIPTION:

Location: mumbai, bangalore, pune

Mode of Work : 3 days from Office

DSA(Collections, Hash maps, trees, Linkedlist and Arrays, etc), Core Oops concepts(Multithreading, Multi Processing, Polymorphism, Inheritance etc) Annotations in Spring and Spring boot, Java 8 Vital features, database Optimization, Microsevices and Rest API

• Design, develop, and maintain low-latency, high-performance enterprise applications using Core Java (Java 5.0 and above).
• Implement and integrate APIs using Spring Framework and Apache CXF.
• Build microservices-based architecture for scalable and distributed systems.
• Collaborate with cross-functional teams for high/low-level design, development, and deployment of software solutions.
• Optimize performance through efficient multithreading, memory management, and algorithm design.
• Ensure best coding practices, conduct code reviews, and perform unit/integration testing.
• Work with RDBMS (preferably Sybase) for backend data integration.
• Analyze complex business problems and deliver innovative technology solutions in the financial/trading domain.
• Work in Unix/Linux environments for deployment and troubleshooting.

Required Skills & Experience:

• 3– 8 years of strong hands-on experience in Core Java, Spring boot, microservices, data structures.
• Deep understanding of Object-Oriented Programming (OOP), data structures, algorithms, and design patterns.
• Proven experience with Spring, CXF, and REST/SOAP web services.
• Solid understanding of microservices architecture and distributed systems.
• Experience working with Sybase or other relational databases.
• Expertise in multithreading, concurrency, and high-throughput server-side development.
• Exposure to capital markets, sales & trading platforms, or similar financial services applications.
• Good working knowledge of Unix/Linux environments.
• Experience in solution architecture and design documentation is a strong plus.
• Strong problem-solving skills, analytical thinking, and a proactive attitude.
• Excellent communication and interpersonal skills to work effectively with global teams.

Preferred Qualifications:

• Bachelor’s or Master’s degree in Computer Science, Engineering, or related field.
• Previous experience in investment banking, capital markets, or financial technology domains.

For more details:

Website: www.wissen.com

Wissen Thought leadership : https://www.wissen.com/articles/

LinkedIn: Wissen Technology

Wissen Technology is looking for experienced Java Developers to join our team in Bangalore!

📍 Location: Bangalore

💼 Experience: 5–7 Years

⚡ Immediate Joiners Only

🔑 Key Skills

Strong experience in Core Java

Strong understanding of OOPs concepts

Hands-on experience with Java Collections

Strong knowledge of Multithreading & Concurrency, DSA (Data Structures & Algorithms), Spring Boot & Microservices, REST APIs, SQL / Database

📌 Please Note: Only candidates currently based in Bangalore can apply, as the interview process includes F2F rounds.

Must have

Experience in the Core Java development 

Good understanding of Object Oriented Design, Design Patterns and data structure algorithms

Experience in Multi-threading, Hashmaps, Collection arrays

Experience in Java collections

Experience in developing applications using Spring Boot

Proficient in building Micro Services with Java 1.8 or higher, J2EE, Spring, Spring Boot.

Proficient with No SQL and Relational Databases

Hands on experience in Unit testing frameworks like Junit / Mockito OR TDD

Java + Angular

Java, spring boot, microservice, angular

5-10yrs

Hyderabad, bangalore

immediate 15days

Call or WhatsApp: 6 3 8 5 0 7 6 1 4 2

Java Developer

Experience: 4+ Years

Location: Pune

Responsibilities:

• Actively contribute to designing, developing, testing, deploying, and maintaining software.
• Collaborate with the team to develop web services, mobile applications, and web applications. Create, enhance, deploy, and maintain functional, secure, and high-quality applications.
• Write well-designed, efficient, secure, and high-performance code.
• Follow best practices in software design and testing.
• Review, test, and debug team members' code.
• Actively contribute to writing and updating technical documentation.

Candidate Requirements:

• Minimum 4+ years of experience in web-based development using the following technologies:

 - Core Java, Spring MVC, Node.js, and ORM.

 - Working knowledge of relational databases, NoSQL databases, and caching technologies.

 - RESTful APIs, SOAP, and JSON.

 - Angular, HTML5, and CSS (StencilJS).

 - Knowledge of application performance tuning is mandatory.

• Proficient understanding of code versioning tools, such as Git.
• Experience in designing and developing microservices-based applications.
• Expertise in real-time issue debugging, root cause analysis, and providing accurate technical solutions.
• Hands-on experience in integrating and troubleshooting third-party APIs such as Perfios, IDfy, Karza Technologies, NSDL, Legality, Hunter, RBIH, and JanSamarth, including API request/response handling, authentication, error handling, and production issue resolution.
• Knowledge of Agile Scrum development methodologies.
• Ability to integrate applications with network systems, servers, and databases.
• Ability to troubleshoot application development and usage issues.
• Excellent conceptual and critical-thinking capabilities.
• Self-directed and self-motivated, with the ability to take charge or work in a supporting role.

Good to Have:

• Experience in the BFSI (Banking, Financial Services, and Insurance) or Fintech domain.

looking for chennai and pune candidates, no relocation and all

Chennai & pune

java8 + springboot + microservice + Kakfa + AWS +Unit testing

Immediate to 15days

JOB DESCRIPTION

Experience: 4 to 10 years

Location- Bangalore/ 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. 4 to 10 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.

Java Developer with Scala

4 - 10 Years

26 - 30 lpa

Bangalore

Mandatory Skills

Strong hands-on experience in Java development.

Practical experience with Scala programming.

Strong knowledge of OOP concepts, data structures, and algorithms.

Experience developing REST APIs and microservices.

Knowledge of Spring Boot and related Java frameworks.

Experience with SQL and relational databases.

Understanding of Git, unit testing, debugging, and code review practices.

Good knowledge of software development lifecycle and Agile methodologies.

Mactores is the agent-native AWS modernization firm. Most modernization work doesn't ship, it stalls in pilots, slips a year, or lands at three times the budget. We exist to ship it: production systems running, legacy retired, outcomes measured. Our delivery is built on Aedeon, the agent platform built by Mactores' founders' sister company, which absorbs the repetitive 60–70% of engagement work, discovery, dependency mapping, validation, test generation, that traditional consulting bills human hours against. Forward-deployed engineers own the rest: architecture, judgment, and cutover, on dates we commit to in the contract.

Enterprises stuck on Oracle carry license renewals, vendor-specific SQL nobody wants to touch, and application layers welded to the database underneath them. This role sits in our Application & Database Modernization pillar: you'll work an Oracle-to-PostgreSQL migration where Aedeon handles the mechanical conversion at scale and you own what the tools can't, which is the refactoring judgment inside large enterprise Java codebases.

You'll rewrite the SQL the application actually depends on, align it with the modernized schema, prove functional parity, and see the application through production cutover. Not a proof of concept. A system that ships.

What you will do?

• Decompose a large Java monolith into microservices: identify bounded contexts, extract services with the strangler-fig pattern, and define REST and event contracts.
• Apply proven microservice patterns: database-per-service (staged pragmatically), Saga with compensating actions, transactional outbox, idempotent consumers, and resilience patterns such as circuit breakers.
• Remediate Oracle- and SQL Server-specific code for Aurora PostgreSQL: rewrite embedded SQL, stored procedure calls, sequences, pagination, date handling and error handling, and update JPA/Hibernate or MyBatis mappings.
• Work closely with database migration engineers so application-layer SQL lines up with the converted target schema and supports environment cloning and refresh.
• Deploy and run services on Amazon EKS: Helm charts, health probes, JVM and resource tuning, autoscaling, ALB/NLB ingress, and Pod Identity for AWS access.
• Build and maintain GitHub Actions CI/CD pipelines for Java services: Maven/Gradle builds, scanned images in Amazon ECR, Flyway/Liquibase migrations, and promotion from dev to prod with approval gates and rollback.
• Automate testing: unit, Testcontainers integration, contract, API and smoke tests, plus parity and performance tests that prove modernized services match or beat legacy baselines. Wire the client's existing suites into the pipeline.
• Use GenAI-assisted tools (Claude Code) to accelerate code conversion, and validate their output rigorously.
• Instrument services for Dynatrace and support production cutover: rehearsals, validation, rollback planning and stabilization.
• Produce engineering documentation that outlives the engagement: design notes, code-migration runbooks, troubleshooting guides and knowledge-transfer material for the client's teams.
• Pair with client engineers and SMEs across US- and India-based teams, reviewing code and keeping business logic aligned.

What are we looking for?

• Bachelor's degree in Computer Science, Engineering, or a related field.
• 5+ years of professional Java development experience (Java, Spring Boot, Spring Cloud, JDBC, JPA/Hibernate or MyBatis).
• Hands-on experience decomposing a monolith into microservices in production: domain-driven design, Saga and event-driven integration (Kafka, SQS/SNS or EventBridge).
• Strong SQL expertise. You can analyze, optimize and rewrite complex SQL embedded in Java, and you've migrated application code from Oracle or SQL Server to PostgreSQL.
• Deep understanding of JDBC, ORMs, transaction management, connection pooling and database-driven application flows.
• Production experience running Spring Boot on Kubernetes (preferably Amazon EKS) with Docker and Helm.
• CI/CD experience with GitHub Actions: reusable workflows, environment approvals and OIDC authentication to AWS.
• Test automation skills: JUnit 5, Mockito, Testcontainers, REST Assured and consumer-driven contract testing.
• Working knowledge of AWS application services: Aurora PostgreSQL, RDS Proxy, KMS and IAM roles for workloads.
• Regular use of AI coding assistants in real delivery work.
• Excellent spoken and written English, and the ability to work US Mountain Time business hours with globally distributed teams.

You will be preferred if you

• Have exposure to automated code-refactoring tools or GenAI-assisted remediation workflows.
• Have experience with Amazon VPC Lattice or a service mesh.
• Have done performance testing (Gatling, JMeter or k6) and worked with observability stacks (Dynatrace or OpenTelemetry).
• Have worked on MuleSoft integrations and Ping Identity (OAuth 2.0 / OIDC).
• Have worked in SOX-regulated environments: change control, approvals and audit evidence.
• Have worked on e-commerce, subscription ordering or commission/compensation systems.
• Hold an AWS certification (Developer Associate or Solutions Architect) and have basic Terraform.

JOB DESCRIPTION

Experience: 3-10 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. 3-10 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.