Point Of Sale Developer

Point Of Sale Backend Developer

Location: Bethesda, MD
Work Environment: Hybrid - 4 days onsite, 1 day remote
Experience Level: Expert Level
Employment Type: Contract

Position Overview

We are seeking a strong Backend Developer to design, build, and scale high-performance data integration pipelines and serverless backend services within a modern Azure-based architecture. This role will focus on developing reliable, high-throughput REST APIs, automating ETL/ELT workflows, and optimizing complex relational database layers to support seamless data movement across enterprise systems.
The ideal candidate will have deep experience with C#/.NET, Azure Functions, advanced SQL, RESTful web services, and enterprise data integration. This is a highly impactful role supporting backend systems that power digital ordering, POS platforms, analytics, and real-time operational decision-making.

Key Responsibilities

• Design, build, and maintain scalable backend services using C#/.NET.
• Develop and support serverless applications using Azure Functions, including HTTP and Timer bindings.
• Build high-throughput RESTful APIs to support enterprise system integrations.
• Create, automate, and optimize ETL/ELT data pipelines across multiple business-critical platforms.
• Write, tune, and troubleshoot complex SQL queries, stored procedures, indexes, and relational database performance issues.
• Support data movement across POS, digital ordering, analytics, and enterprise application environments.
• Implement scalable backend solutions with a focus on concurrency, caching, data serialization, and performance optimization.
• Collaborate with business and technical stakeholders to understand integration needs and deliver reliable backend solutions.
• Support CI/CD deployment processes using tools such as Azure DevOps and/or GitHub Actions.
• Monitor application health and performance using Azure monitoring tools, including Application Insights.

Required Qualifications

• 4+ years of professional backend development experience with C#/.NET.
• Hands-on experience building decoupled, maintainable enterprise backend services.
• Strong experience with Microsoft Azure, specifically serverless architecture and Azure Functions.
• Advanced SQL skills, including complex query writing, stored procedure development/debugging, and index tuning.
• Experience designing and developing RESTful web services.
• Proven experience building ETL/ELT pipelines and integrating disparate enterprise systems.
• Strong understanding of performance optimization, concurrency, caching strategies, and data serialization.
• Experience working in CI/CD environments.

Preferred Qualifications

• Experience working with Point of Sale (POS) systems or POS analytics platforms.
• Experience in hospitality technology, retail, restaurant, airport, or other high-volume transaction-based environments.
• Familiarity with Azure Application Insights, Azure DevOps, and GitHub Actions.
• Experience supporting real-time digital ordering, transaction processing, or enterprise reporting platforms.

What You'll Work On

This role supports a major backend modernization initiative focused on scaling and improving enterprise data infrastructure. As digital ordering, POS systems, and analytics platforms continue to expand, this position will help build the APIs, data pipelines, and serverless services needed to ensure accurate, timely, and reliable data flow across the organization.

Interview Process

1. Initial 15-minute virtual screening with a member of the hiring team
2. Technical evaluation
3. Onsite 1-hour discussion with stakeholders

Work Environment

• Hybrid schedule based in Bethesda, MD
• 4 days onsite and 1 day remote
• Collaborative technical environment supporting enterprise-scale backend modernization

This is a great opportunity for a backend engineer who enjoys building scalable data services, modernizing integration platforms, and working on systems that directly impact business operations and customer-facing technology.
Job Type & Location
This is a Contract position based out of Bethesda, MD.
Pay and Benefits
The pay range for this position is $55.00 - $75.00/hr.
Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: Medical, dental & vision Critical Illness, Accident, and Hospital 401(k) Retirement Plan - Pre-tax and Roth post-tax contributions available Life Insurance (Voluntary Life & AD&D for the employee and dependents) Short and long-term disability Health Spending Account (HSA) Transportation benefits Employee Assistance Program Time Off/Leave (PTO, Vacation or Sick Leave)
Workplace Type
This is a hybrid position in Bethesda,MD.
Application Deadline
This position is anticipated to close on Aug 8, 2026.

About TEKsystems

We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

About TEKsystems and TEKsystems Global Services

We're a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We're a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We're strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We're building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

San Francisco Fair Chance Ordinance: Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in the city and county of San Francisco, we will consider for employment qualified applicants with arrest and conviction records.

Massachusetts Lie Detector: It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI): We may use Artificial Intelligence (AI) to support parts of our hiring process, including sourcing, screening, and evaluating candidates. AI helps assess applications and qualifications, but final decisions are made by our hiring team. By applying, you acknowledge and agree that your application may be reviewed using AI tools.