Sr. Java Developer

Mactores is a trusted leader among businesses in providing modern data platform solutions. Since 2008, Mactores have been enabling businesses to accelerate their value through automation by providing End-to-End Data Solutions that are automated, agile, and secure. We collaborate with customers to strategize, navigate, and accelerate an ideal path forward with a digital transformation via assessments, migration, or modernization.

Mactores is looking for a Software Engineer with proficiency in Java, Spring, and Hibernate to participate in the migration project from Oracle to PostgreSQL. The ideal candidate should possess a robust understanding of Java, Spring, and Hibernate, with hands-on experience in developing large-scale Java web applications.

What you will do?

• Analyze and remediate large enterprise Java codebases to replace legacy or database-specific SQL constructs with modern, standards-compliant SQL.
• Convert embedded SQL within Java services and MyBatis XML mappers, including rewriting constructs such as vendor-specific functions, sequences, pagination logic, dynamic SQL, and error-handling patterns.
• Collaborate closely with schema and database migration engineers to ensure application-layer SQL aligns with the modernized target schema.
• Refactor Java transaction logic, error-handling, drivers, and ORM/DAO layers to support the behavior of modern databases.
• Participate in unit, integration, and performance testing to confirm functional parity and ensure applications meet performance SLAs post-modernization.
• Support application cutover activities for production environments, including validation, monitoring setup, rollback planning, and stabilization.
• Produce engineering documentation: SQL remediation guides, code-migration runbooks, troubleshooting guides, and knowledge-transfer material for customer teams.
• Work across distributed teams (US & India) and collaborate with customer SMEs to ensure business logic alignment and successful modernization outcomes.

What are we looking for?

• Bachelor’s degree in Computer Science, Engineering, or related field.
• 5+ years of professional Java development experience (Spring, JDBC, MyBatis/Hibernate or equivalent).
• Experience with application modernization, database migrations, or large-scale refactoring initiatives.
• Strong SQL expertise and the ability to analyze, interpret, optimize, and rewrite complex SQL used within Java applications.
• Deep understanding of JDBC, ORMs, Java transaction patterns, and database-driven application flows.
• Experience working on enterprise-grade, high-performance applications with complex data interactions.
• Strong communication skills and ability to work with global distributed teams in US time-zones.

You will be preferred if

• Experience with PostgreSQL, Aurora PostgreSQL, or modernization from legacy databases such as Oracle, SQL Server, or DB2.
• Exposure to automated code-refactoring tools or GenAI-assisted remediation workflows.
• Familiarity with CI/CD environments, performance testing tools, and observability stacks.
• Consulting or professional services experience delivering fixed-timeline modernization projects.

Job Description below:

Required Skill Set

Senior Software Engineer- Java

• Experience in Core Java 5.0 and above, Data Structures, OOPS, Multithreading, Algorithms, Collections, Unix/Linux
• 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-volume server-side development
• 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.

Job Brief-

·       Understand product requirements and come up with solution approaches

·       Build and enhance large scale domain centric applications

·       Deploy high quality deliverables into production adhering to the security, compliance and SDLC guidelines

• Analyze highly complex business requirements;
• generate technical specifications to design or redesign complex software components and applications;
• Acts as an expert technical resource for modeling, simulation and analysis efforts;
• Adapt to change quickly and adjust work accordingly in a positive manner;
• Be flexible and thrive in an evolving environment;
• Individual contributor to build the application for e-commerce platform;
• Assures quality, security and compliance requirements are met for supported areas;
• Working in cloud data stores to include S3, DynamoDB and/or Amazon RDS;
• Perform test automation in a test-driven development environment;
• Implement DevOps concepts, tools and continuous delivery pipelines - Bamboo, Jenkins, Maven, Bitbucket, Jira, etc;
• Implement instrumentation to gather business-specific metrics around consumer usage patterns;

• Candidates with good experience with SDLC
• Minimum 3+ years of hard core coding experience is mandatory
• Excellent hands on coding in Java, J2EE, Spring, Struts

REQUIRED SKILLS:

• 8+ years experience in web application development and architecture.
• ·Extensive experience using open source software libraries
• Strong experience in at least one MVC architecture or application of the pattern
• Solid hands on experience with Java
• Strong experience with SQL ( Oracle, MySQL, Postgres)
• Strong experience in Data Structures & Algorithms
• ·Must have built end to end continuous integration and deployment infrastructure for micro services
• Strong commitment to good engineering discipline and process including code reviews and delivering unit tests in conjunction with feature delivery
• Must possess excellent communication and teamwork skills. Strong presentation and facilitation skills are required.
• Self-starter that is results focused with the ability to work independently and in teams.
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GOOD TO HAVE:

• Prior experience building modular, common and scalable services
• Experience using chef, puppet or other deployment automation tools
• Experience working within a distributed engineering team including offshore
• Bonus points if you have contributed to an open source project
• Familiarity and experience with agile (scrum) development process
• Proven track record of identifying and championing new technologies that enhance the end-user experience, software quality, and developer productivity

What we look for:

• Strong analytical and problem-solving skills
• Hands on programming work in Advance Java, Springs, Spring Boot framework,
• Ability to independently work on complex business requirements 
• Ability to communicate clearly and concisely 

What will you do:

You will independently work on designing and developing solutions that solve customer’s business problems. You will own the assigned problem statements, evaluate multiple technical approaches and use design-thinking to take independent decisions while implementing the solution. You will also guide junior members of the team and participate in code and design review process.

Who should apply:

You have -

• a graduate degree in BE, BTech, MTech, MCA from a reputed institute
• 5 to 7 years of hands-on experience in programming Core Java 8, Spring Boot, Spring Rest Template, Spring Security, Spring Data, Spring JDBC Template
• Good to Have experience/knowledge on Docker, Oracle, MongoDB, Quartz Scheduler, Shell scripting
• Working experience with Windows, Linux environments