Senior Software Engineer - Fullstack

Core Specialty Insurance Holdings, Inc.; Cincinnati (OH); On-site; USD 110,000 - 160,000; Full time

Benefits offered by this job

Medical insurance

Dental insurance

Vision insurance

Life insurance

Short-term disability

Long-term disability

401(k) with company match

Employee Assistance Plan

Health Savings Account

Flexible Spending Account

Wellness program

Job summary

Core Specialty Insurance Holdings, Inc. is seeking a Technical Specialist to configure and extend the Duck Creek insurance platform, supporting Policy, Billing, and Claims workflows.

You will partner with product managers, QA, and integrations to implement rules, forms, transactions, and APIs in a scalable, compliant way. The role requires a hybrid schedule (3 days in office / 2 remote) from Cincinnati, OH or Dallas, TX, with no relocation assistance.

Qualifications

• Bachelor’s Degree in Information Technology or a related discipline.
• 3+ years experience coding in C#/.NET Core, .NET Core Web APIs, Next.js, SQL Server, API development/integration, and application deployment.
• 3+ years experience implementing, configuring, or extending enterprise platforms, policy administration systems, or comparable COTS platforms.
• Previous experience with Duck Creek platform strongly preferred.
• Exposure to API-first, headless, or modern integration architectures is preferred.
• Familiarity with cloud or SaaS delivery models is a plus.
• Demonstrated mentoring or technical leadership experience, including code/configuration reviews and delivery ownership.
• Previous experience with insurance platforms preferred.

Responsibilities

• Configure insurance product models—including lines, coverages, underwriting rules, rating factors, and forms—using platform configuration tools to meet business and regulatory requirements.
• Build and customize transactional behaviors supporting key policy lifecycle events such as quote, issue, endorsement, renewal, and cancellation.
• Develop, test, and optimize rules and logic that automate underwriting decisions and pricing calculations.
• Design and generate policy documents and outputs using XML/XSLT- or template-driven form technologies.
• Design and implement integrations between the core insurance platform and external systems using APIs.
• Contribute to platform design decisions with a focus on maintainability, performance, and scalability; conduct peer reviews and mentor junior team members.
• Produce unit and integration tests, collaborate with QA on automation approaches, and support high-quality releases with minimal defect leakage.
• Manage and optimize SQL Server database objects and operational processes, including batch jobs, data fixes, and environment support activities.
• Perform other duties as assigned.

Skills

C# / .NET Core

.NET Core Web APIs

Next.js

SQL Server

API development

Application deployment

XML / XSLT / HTML

Enterprise integration

Education

Bachelor’s Degree in Information Technology or related discipline

Tools

Duck Creek

Job description

Serve as a Technical Specialist working on Core Specialty's Insurance Platform (Duck Creek), responsible for the design, configuration, and extension of core insurance systems supporting Policy, Billing, and Claims workflows. This role focuses on delivering compliant, scalable insurance products by configuring platform capabilities, extending business logic, and integrating with enterprise systems.

You will partner closely with product managers, business analysts, QA, and integration teams to implement rules, forms, transactions, and APIs, applying industry best practices and modern integration patterns while working within the insurance platform ecosystem.

The selected candidate will be required to work a hybrid schedule (3 days in office / 2 remote) from our Cincinnati, OH or Dallas, TX office. No relocation assistance is offered for this role.

Applicants must be authorized to work for any employer in the U.S. We are unable to sponsor or take over sponsorship of an employment Visa for this position.

Key Accountabilities & Deliverables

• Configure insurance product models—including lines, coverages, underwriting rules, rating factors, and forms—using platform configuration tools to meet business and regulatory requirements.
• Build and customize transactional behaviors supporting key policy lifecycle events such as quote, issue, endorsement, renewal, and cancellation.
• Develop, test, and optimize rules and logic that automate underwriting decisions and pricing calculations.
• Design and generate policy documents and outputs (e.g., declarations, endorsements) using XML/XSLT- or template‑driven form technologies.
• Design and implement integrations between the core insurance platform and external systems (e.g., rating services, claims vendors, finance/GL, document management, data platforms) using APIs and open standards.
• Contribute to platform design decisions with a focus on maintainability, performance, and scalability; conduct peer reviews and mentor junior team members.
• Produce unit and integration tests, collaborate with QA on automation approaches, and support high‑quality releases with minimal defect leakage.
• Manage and optimize SQL Server database objects and operational processes, including batch jobs, data fixes, and environment support activities.
• Perform other duties as assigned.

Technical Knowledge & Skills

• Experience configuring or extending enterprise or policy administration platforms, including transactional workflows, rules engines, forms, and integrations.
• Coding in C#/.NET Core, .NET Core Web APIs, Next.js, SQL Server, API development/integration, and application deployment
• Experience designing or consuming APIs and supporting system‑to‑system integrations.
• Proficiency with SQL / SQL Server, including schema understanding, writing and tuning queries, and supporting batch or operational processes.
• Working knowledge of XML, XSLT, and HTML commonly used for document generation, integrations, or platform customization.
• Strong collaboration skills with business users, QA teams, and external vendors.

Required Experience & Preferred Qualifications

• Bachelor’s Degree in Information Technology or a related discipline (or equivalent practical experience).
• 3+ years experience coding in C#/.NET Core, .NET Core Web APIs, Next.js, SQL Server, API development/integration, and application deployment.
• 3+ years experience implementing, configuring, or extending enterprise platforms, policy administration systems, or comparable commercial off‑the‑shelf (COTS) platforms required.
• Previous experience with insurance platforms preferred.
• Exposure to API‑first, headless, or modern integration architectures is preferred.
• Familiarity with cloud or SaaS delivery models, including upgrade‑friendly design and operational constraints, is a plus.
• Demonstrated mentoring or technical leadership experience, including code/configuration reviews and delivery ownership.
• Previous experience with Duck Creek platform strongly preferred.

At Core Specialty, you will receive a competitive salary and opportunities for professional development and advancement. We offer medical, dental, vision, and life insurances; short and long-term disability; a Company-match of 100% of a 6% contribution 401(k) plan; an Employee Assistance Plan; Health Savings Account, Flexible Spending Account, Health Reimbursement Account, and a wellness program