Senior Java API & Integration Engineer

Openkrill

United States

Remote

USD 140,000 - 150,000

Full time

14 days+

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Benefits offered by this job

Health Insurance

Dental Insurance

Vision Insurance

401(k) with company matching

Paid time off

7 Paid company holidays

4 Floating holidays per-year

Life Insurance and AD&D

Job summary

ABC Legal Services is seeking a Senior Java Developer to expand the Enterprise team's capacity for high-impact integrations. You will design, build, and support APIs and integration services that connect our platform with customers, partners, vendors, and internal products.

You will work on public-facing APIs and the backend services that support them. This is an opportunity for a senior engineer who translates complex business workflows into dependable, well-designed integrations across Java

Qualifications

7+ years of professional software development experience with strong Java production experience.
Strong experience designing and implementing REST APIs and system integrations.
Experience with Spring/Spring Boot, DI, security, and SOA architecture.
Strong API security concepts (OAuth 2.0, token-based auth, secrets management).
Relational databases (SQL), data modeling, indexing, migrations.
Experience with asynchronous/event-driven processing patterns.
Experience with a business-rules engine (e.g., Drools) or ability to learn.
Strong automated testing: unit & integration tests for APIs, logic, data access.
Familiar with AI development tools (Codex/Claude) in engineering workflows.
Ability to analyze ambiguous requirements and communicate tradeoffs clearly.

Responsibilities

Design, build, and maintain RESTful APIs used by customers, partners, and internal systems.
Extend and support APIs for future integration projects with customers, vendors, and partners.
Develop secure machine-to-machine integrations, including authentication and API versioning.
Build resilient integrations with inbound/outbound processing, webhooks, and document exchange.
Design event-driven workflows with durable processing, retries, and audit history.
Work with SQL databases, data modeling, transactions, and persistence frameworks like MyBatis.
Implement business rules in Java and a rules engine; keep behavior testable and safe.
Collaborate with product, operations, and external technical contacts to deliver solutions.
Investigate production issues, identify root causes, and deploy durable fixes.
Contribute to design, code reviews, testing, and API/integration documentation.
Use AI tools thoughtfully to improve speed, investigation, documentation, and code quality.