Senior Applications Developer (C# / SQL Server); USA (Onsite)

HTF Inc; Frederick (MD); On-site; USD 110,000 - 160,000; Full time

Benefits offered by this job

Medical, dental and vision Insurance

401(k) Plan with Employer Match

Paid holidays

Disability insurance

Life insurance

Job summary

Hi-Tech Fasteners, Inc. (HTF) is seeking a Senior Applications Developer to own the ERP extension portfolio built on Epicor Prophet 21.

You will design and ship C# / .NET applications, optimize T-SQL, and drive customization versus configuration decisions across Sales, Purchasing, Distribution and Accounting. The role requires strong engineering judgment, mentoring junior staff, and coordinating with Epicor and third-party partners for reliable, scalable solutions.

Qualifications

• 7+ years of professional software development experience with C# / .NET.
• Advanced SQL Server skills: complex T-SQL, stored procedures, indexing, and performance tuning.
• Experience integrating business systems via REST or SOAP APIs, queues, file interfaces, or EDI.

Responsibilities

• Design, build, and maintain C# / .NET applications, services, and integrations for P21 and ecommerce storefronts.
• Write and optimize complex T-SQL against the P21 database, including performance tuning.
• Own P21 customization portfolio: rules, screens, extensions, and configuration decisions.

Skills

C# / .NET

T-SQL

SQL Server

REST APIs

SOAP APIs

Message queues

EDI

Education

Bachelor’s degree in Computer Science, Information Systems, or related field

Tools

Prophet 21

Git

Power BI

Job description

Hi-Tech Fasteners, Inc. (HTF) has been a leading master-stocking distributor of fasteners, electronic hardware and components for over 30 years. By building strategic and dependable customer and manufacturer relationships, HTF has steadily grown from a local distributor to one with an international presence and reach. Through our distribution facilities in both the United States and Canada, we strive to meet our goal of exceptional service and “delivering the parts our customers need, when they need them.”

The Opportunity:

For over 30 years, HTF has been a trusted master-stocking distributor of electronic hardware, fasteners, and components. As an ISO-certified supplier, we provide both standard and non-standard parts, ensuring fast, reliable delivery to customers worldwide. With distribution centers in the U.S. and Canada, we stock top brands and support industries including aerospace, telecom, defense, medical, and industrial manufacturing. Our operations run on Epicor Prophet 21 (P21) backed by SQL Server, alongside a B2B eCommerce storefront and a growing set of internal applications. We are hiring a Senior Applications Developer to own that portfolio: the business rules, the integrations, the custom applications, and the data layer underneath all of it. This is a senior, hands‑on role with real autonomy. We are looking for a strong C# and SQL Server developer first. Prior Prophet 21 experience is a significant plus, but it is not a requirement — a developer who is fluent in C# and relational data modeling will read the P21 schema and pick up its customization framework quickly, and we would rather hire for engineering judgment than for familiarity with one vendor’s toolset. You will be the technical authority on how our ERP is extended. That means shipping work yourself, but also making the calls about what gets customized versus configured versus left alone — decisions that either compound into a maintainable system or into an upgrade nightmare.

Duties and Responsibilities:

• Design, build, and maintain C# / .NET applications, services, and integrations that extend P21 and connect it to our eCommerce storefront, middleware, supplier systems, and internal tools.
• Write and optimize complex T-SQL — stored procedures, views, functions, and queries — against the P21 database, including performance tuning where custom logic or reporting load affects production.
• Own the P21 customization portfolio: business rules (DynaChange), custom screens, and extensions. Decide what belongs as configuration, what belongs as a rule, and what belongs in application code.
• Translate business requirements from Sales, Purchasing, Distribution, and Accounting into working solutions, pushing back where a request is better solved by process change than by code.
• Establish and enforce engineering practice: source control, code review, a real test-to-production path, and documentation of every customization in service.
• Lead upgrade impact assessment — maintain the customization inventory, identify what breaks, and plan remediation ahead of P21 version upgrades.
• Build and maintain reporting and data integrations (SSRS, Power BI, or equivalent) that give the business reliable numbers.
• Serve as technical liaison to Epicor and to third‑party implementation and development partners, holding vendor work to the same standard as internal work.
• Mentor junior technical staff and share knowledge deliberately, so that no system has exactly one person who understands it.

Required Qualifications:

• 7+ years of professional software development experience, with a substantial portion in C# / .NET.
• Advanced SQL Server skills: complex T-SQL, stored procedure development, indexing, execution plan analysis, and performance tuning against large transactional databases.
• Demonstrated experience integrating business systems — REST or SOAP APIs, message queues, file‑based interfaces, or EDI — including error handling and reconciliation for processes that must not silently fail.

• Experience working directly against a third‑party application database: reading an unfamiliar schema, inferring intent, and extending a system you did not build.
• Source control discipline (Git or equivalent) and a working definition of “tested” that does not mean “it ran once on my machine.”
• Ability to gather requirements from non‑technical business users and translate them into a technical design without a business analyst in between.
• Bachelor’s degree in Computer Science, Information Systems, or a related field — or equivalent professional experience.
• Ability to work on‑site in Frederick, Maryland.

Preferred Qualifications:

• Epicor Prophet 21 experience — DynaChange Rules, Screen Designer, Portals, the P21 API, or P21 Middleware.
• Experience with another distribution or manufacturing ERP (Epicor Kinetic, NetSuite, SAP Business One, Infor, Acumatica) and its customization layer.
• Background in wholesale distribution, industrial supply, or manufacturing — order‑to‑cash, procure‑to‑pay, inventory, and pricing.
• eCommerce and B2B storefront integration, including pricing and availability services.
• Reporting development in SSRS, Crystal Reports, Report Studio, InfoMaker, or Power BI.
• SQL Server administration: backup strategy, replication, high availability.
• Front‑end skills (JavaScript, React, or similar) for internal tooling.

What Success Looks Like

First 90-days:
Fluent in the P21 schema and our existing customizations. Several requests delivered end‑to‑end. A clear‑eyed written assessment of where our current customization portfolio carries risk.
Six Months:
Owning delivery for ERP development work without day‑to‑day oversight. Source control, code review, and a documented test‑to‑production path in place and actually followed. Business stakeholders coming to you directly.
One Year:
The technical authority on how HTF extends P21. Upgrade impact is a planned exercise rather than a fire drill. At least one meaningful integration or application built and in production that the business depends on.

Why This Role

• Genuine ownership — you will set the technical direction for ERP development, not implement someone else’s design.
• Broad scope across every business function, with direct access to the people whose problems you are solving. No layers between you and the decision.
• An established company with an active project portfolio, a growing eCommerce channel, and real appetite for automation.
• Company‑funded training and Epicor certification, plus a durable, in‑demand specialization if P21 is new to you.

Compensation and Benefits:

Hi-Tech offers competitive wages and includes the following benefits:

• Medical, dental and vision insurance and prescription coverage for eligible employees and their dependents.
• Paid holidays and time off.
• Participation in 401(k) Plan with Employer Match after one year of full‑time employment.
• Company paid long‑term disability insurance.
• Company paid life insurance.

Hi-Tech Fasteners, Inc. provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.