Lead Java Engineer

Apptad Inc; Philadelphia (Philadelphia County); On-site; USD 120,000 - 180,000; Full time

Job summary

Apptad Inc. is seeking a senior software engineer with 5+ years of experience to design and enhance a configurable Spring Batch-based batch-processing platform. You will lead complex workflows, optimize performance, and apply advanced OOP patterns within a fast-paced Agile team.

You will collaborate with architects and engineers to ensure scalable, reliable batch processing, incident analysis, and continual improvement in memory management and threading. Strong mentoring skills are required.

Qualifications

• 5+ years of professional software engineering experience.
• Expert-level proficiency in Java (Java 11 or higher preferred).
• Deep, hands-on experience with Spring Batch, including custom readers/writers, step flows, partitioning, retry/skip logic, and job orchestration.
• Prior experience leading teams or acting as a senior technical mentor.
• Strong command of OOP principles and proven ability to apply classic design patterns in real-world, large-scale systems.
• Strong understanding of multi-threading, performance tuning, and memory management in Java.
• Familiarity with relational databases, SQL, and transactional behavior in batch processing.
• Experience with CI/CD pipelines, Git, automated testing, and cloud or container environments.

Responsibilities

• Participate in Agile ceremonies including daily standup, grooming, retrospective, demos, sprint and PI planning as part of the Alchemist scrum team.
• Assist team in decomposing features into user stories and raise risks to scrum master and architect.
• Lead the design and evolution of a configurable batch-processing platform based on Spring Batch with significant customizations.
• Build and enhance complex batch workflows, job orchestration layers, partitioning strategies, and custom Spring Batch components.
• Optimize memory, threading models, chunk sizes, retry policies, and failure recovery strategies.
• Apply advanced OOP design patterns to construct highly flexible and extensible components.
• Drive design decisions that improve platform modularity, configurability, and performance.
• Create and maintain platform frameworks, libraries, and reusable abstractions.
• Create and maintain software design specification documentation.
• Ensure software quality by conducting design reviews, code reviews, and enforcing unit testing/code coverage, static analysis, and security testing standards.
• Participate in software release preparation, go-live, and hypercare activities to deliver business value.
• Lead production incident and defect root cause analysis and ensure timely remediation.
• Stay current with middleware and enterprise integration trends and discuss improvements with architect.

Skills

Java

Spring Batch

Batch processing

OOP design patterns

Multi-threading

SQL / Relational DB

CI / CD

Cloud / AWS

Mentoring

Tools

Stonebranch

NewRelic

Sumo Logic

Git

AWS Batch

S3

RDS

EFS

Job description

Must Have Technical/Functional Skills

• 5+ years of relevant professional software engineering experience.
• Expert-level proficiency in Java (Java 11 or higher preferred).
• Deep, hands-on experience with Spring Batch, including custom readers/writers, step flows, partitioning, retry/skip logic, and job orchestration.
• Prior experience leading teams or acting as a senior technical mentor.
• Strong command of OOP principles and proven ability to apply classic design patterns in real-world, large-scale systems.
• Strong understanding of multi-threading, performance tuning, and memory management in Java.
• Familiarity with relational databases, SQL, and transactional behavior in batch processing.
• Experience with CI/CD pipelines, Git, automated testing, and cloud or container environments.

Roles & Responsibilities

• Participate in Agile ceremonies including daily standup, grooming, retrospective, demos, sprint and PI planning as part of the Alchemist scrum team. Assist team in decomposing features into user stories, and raise risk/challenges to scrum master and architect.
• Lead the design and evolution of a configurable batch-processing platform based on Spring Batch with significant customizations.
• Build and enhance complex batch workflows, job orchestration layers, partitioning strategies, and custom Spring Batch components
• Optimize memory, threading models, chunk sizes, retry policies, and failure recovery strategies.
• Apply advanced OOP design patterns (e.g., Strategy, Template Method, Factory, Builder, Chain of Responsibility) to construct highly flexible and extensible components.
• Drive design decisions that improve platform modularity, configurability, and performance.
• Create and maintain platform frameworks, libraries, and reusable abstractions.
• Create and Maintain software design specification documentation
• Ensure software quality by conducting design reviews, code reviews, and enforcing unit testing/code coverage, static analysis, and software application security testing standards.
• Participate in software release preparation, go-live, and hypercare activities to ensure development results in business value delivery
• Quarterback production incident and defect root cause analysis ensuring issues are quickly identified and assigned to the correct developer for timely remediation
• Stay current with latest middleware and enterprise integration trends and proactively discuss improvement opportunities with architect

Preferred Skills

• Experience with AWS services including AWS Batch, S3, EFS, and RDS
• Experience building or supporting highly configurable, metadata-driven platforms.
• Experience with enterprise scheduling tools (Stonebranch).
• Experience with observability platforms (NewRelic, SumoLogic).