West Monroe · 3 hours ago
Principal Integration Engineer, Lamina, US
Chicago, IL
Full-time
Hybrid
Senior Level, Lead/Staff
$175K/yr - $206K/yr
7+ years expWest Monroe is a global business and technology consulting firm passionate about creating measurable value for clients. They are seeking a Principal API Platform Engineer to drive the strategy, design, and development of their external API platform, focusing on integration with bank-hosted systems and enhancing developer experience.
Business DevelopmentConsultingInformation ServicesInformation TechnologyService Industry
Responsibilities
Lead the design, development, and versioning of Lamina’s external APIs supporting integration with bank-hosted systems (LoanIQ, AFS, CLS)
Define API governance standards including schema validation, version control, rate limiting, and security (OAuth2, API keys, mTLS)
Architect and manage API gateway infrastructure to monitor traffic, enforce policy, and support scalable partner access
Build and maintain internal tools for API payload debugging, request replay, schema diffing, and log observability
Collaborate with other Banking Technology team members to support external client teams during integration development and testing
Own the internal sandbox environments, test harnesses, and mock services to support bank-side development
Help guide product decisions and API roadmap in partnership with Banking Technology Product Lead
Enable automated testing pipelines and ensure consistent quality across releases
Qualification
Required
7+ years of engineering experience, including 3+ years focused on designing and building partner-facing APIs
Deep experience with RESTful API design, JSON schema, OpenAPI/Swagger, and Postman
Strong backend development skills in Node.js, Python, or Java
Experience managing APIs using platforms such as Kong, Apigee, or AWS API Gateway
Knowledge of authentication and security standards such as OAuth2, JWT, and mTLS
Familiarity with integration patterns (batch, event-driven, polling) and tooling for schema validation and observability
Experience working with or building APIs that connect to enterprise platforms like LoanIQ, AFS, or CLS is highly preferred
Experience building internal developer tools, integration health dashboards, replay utilities, and test harnesses
Familiarity with API lifecycle tooling and partner-facing onboarding assets (e.g., sample payloads, Postman collections)
Strong sense of ownership with ability to drive cross-functional collaboration across engineering, product, and solutions
Client-facing mindset with comfort supporting external bank teams and resolving integration issues
Excellent written and verbal communication skills, especially in translating complex technical issues into clear, actionable insights
Desire to operate in a fast-paced, startup environment with high autonomy
Excited to shape the future of Lamina's integration infrastructure and technical tooling
Able to work independently and collaboratively as part of a highly motivated team
Preferred
Prior experience working on integration-heavy platforms in the FinTech or B2B SaaS space
Strong understanding of core banking or financial systems integration is a plus
Experience working with or integrating into Loan Accounting Systems (LoanIQ, AFS, CLS)
Benefits
Employees (and their families) are covered by medical, dental, vision, and basic life insurance.
Employees are able to enroll in our company’s 401k plan.
Employees can purchase shares from our employee stock ownership program.
Employees are eligible to receive annual bonuses.
Employees will also receive unlimited flexible time off.
Employees will receive ten paid holidays throughout the calendar year.
Eligibility for ten weeks of paid parental leave will also be available upon hire date.
Company
West Monroe
West Monroe offers digital transformation, analytics, cloud, cyber security, business advisory, and management consulting services.
1001-5000 employees
H1B Sponsorship
West Monroe has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (4)
2024 (2)
2023 (2)
2022 (10)
2021 (7)
Funding
Current Stage
Late StageTotal Funding
unknownKey Investors
MSD Partners
2021-10-15Series Unknown
2020-01-07Acquired
Leadership Team
Gil Mermelstein
Chief Executive Officer
Kevin McCarty
Co-Founder & Executive Chairman of West Monroe
Recent News
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