Sr Java Full Stack Developer Principal

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Important to let everyone know: After September 2026, it is going to be 100% onsite at all Fidelity positions, no exceptions. So, please let every candidate know and if they are not able to be onsite 5 days/week from September 2026, do not submit them. Till September 2026, it is going to be alternate weeks onsite. Please stay away from relocation candidates.

JOB#181457

Title: Sr. Java Full Stack Developer/Principal Level candidate

Location: Durham, NC
Client: Fidelity

Duration: 12+ months

Rate: 70-80/hr on W2
Visa: USC, GC, GC-EAD & H4-EAD (EADs' must have validity for at least a year) (LOCALS)

MOI: 1 round

• 10+ years of Java Development (Spring Boot & Spring Cloud)
• Financial Services / Investment Management experience (strongly preferred)
• Java Microservices & RESTful API Development
• 3+ years of Angular (v12+)
• Strong SQL & Spring Batch (Large Financial Datasets)
• Concurrency, Memory Management & JVM Tuning
• AWS (EC2, S3, ECS/EKS)

Key Responsibilities

Technical Leadership

• Own end-to-end technical delivery of MACAR modernization workstreams: ingestion, calculation, reporting, and API layers
• Drive architecture decisions (ADRs) for service decomposition, data access patterns, and API contracts
• Design and build RESTful services and Angular-based UIs that serve operations, business partners, and downstream consumers
• Establish engineering standards: code quality, testing strategy, CI/CD patterns, observability

Hands-on Engineering (60 70% of time)

• Develop Java-based microservices for calculation engines, data access routines, and business logic
• Build and maintain RESTful APIs that serve attribution analytics, reporting, and PADDS backward-compatibility layers
• Contribute to Angular front-end components for ops self-service, dynamic views, and configuration management
• Design for performance at scale: batch and near-real-time processing of large financial datasets

Collaboration & Influence

• Partner with Product Owner and Business Partners (OPS, RM) to translate domain requirements into technical solutions
• Work across squads to resolve cross-cutting concerns: data contracts, shared libraries, integration patterns
• Participate in architecture review boards, sprint reviews, and PI planning
• Communicate technical trade-offs clearly to non-technical stakeholders

Mentorship & Quality

• Mentor mid-level and senior engineers through code reviews, pairing, and design discussions
• Champion test-driven development, automated testing (unit, integration, contract), and production readiness
• Drive down tech debt deliberately - identify, quantify, and propose resolution paths

• 10+ years hands-on Java Development
• Deep expertise in Spring Boot and Spring Cloud (or similar frameworks)
• Strong grasp of Concurrency, Memory Management, and JVM Tuning

• Proven track record designing, building, and versioning RESTful Services at scale
• API-First Design
• OpenAPI / Swagger
• Contract Testing
• Pagination
• Error Handling Patterns

• 3+ years of Angular (v12+)
• Component Architecture
• RxJS
• State Management
• Responsive Design
• Experience building Operations-Facing Tools with a strong usability focus

• Experience with Batch Processing Frameworks (Spring Batch, Custom Schedulers)
• Strong SQL proficiency
• Experience working with Large Relational Datasets
• Bonus: Time-Series or Financial Data

• Practical experience with AWS Services:
  • EC2
  • S3
  • ECS / EKS
  • RDS
  • Lambda
• Infrastructure-as-Code (Terraform / CloudFormation) awareness

• Git
• Jenkins / GitHub Actions
• Docker
• Deployment Automation
• Observability
  • CloudWatch
  • Splunk
  • Grafana

• Excellent Written and Verbal Communication
• Ability to explain complex technical concepts to Business Partners, Architects, and Leadership

• Collaborative Mindset
• Thrives in Cross-Functional Teams
• Comfortable giving and receiving feedback
• Focused on Team Success, not just individual output