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Senior Application Programmer​/Developer; TANTUS

Job in Alexandria, Fairfax County, Virginia, 22350, USA
Listing for: Cotton & Company LLP
Full Time position
Listed on 2026-02-16
Job specializations:
  • Software Development
    Full Stack Developer, Software Engineer, C# / Unity Developer, Senior Developer
Salary/Wage Range or Industry Benchmark: 145000 USD Yearly USD 145000.00 YEAR
Job Description & How to Apply Below
Position: Senior Application Programmer / Developer (TANTUS)

Overview

Senior Application Programmer / Developer (US - Remote)

What to expect when you join Tantus, a Sikich Subsidiary

Tantus, a Sikich Subsidiary, offers the public and private sectors a diverse platform of professional services across consulting, technology and compliance. Highly specialized and hands-on teams deliver integrated solutions rooted in deep industry experience. Our approach is strategically and thoughtfully designed to help our clients, teams and communities accelerate success.

Are you ready to grow with us?

Position summary

We are seeking a Senior Application Programmer/Developer to provide advanced development and maintenance support for federal IT systems.

Clearance

This position supports a federal contract and requires U.S. citizenship or lawful permanent resident (Green Card holder) status, as well as the ability to obtain a Public Trust clearance.

What will you do in this role?
  • Design, develop, enhance, and maintain enterprise applications using .NET Framework 4.x and C#, applying object-oriented design principles and established software quality standards.
  • Develop and integrate RESTful web services using ASP.NET Web API, supporting secure, scalable system interoperability.
  • Implement and maintain user interface components using Angular or Angular

    JS and supporting technologies (HTML, CSS, JavaScript, Type Script, jQuery).
  • Develop and optimize SQL Server queries and data access layers, including use of ORM technologies (e.g., Dapper .NET).
  • Apply Software Configuration Management and Software Quality Assurance practices using Git or Bitbucket within a Scrum/Agile development environment.
  • Support data visualization and reporting solutions (e.g., Tableau), ensure Section 508 compliance, and communicate effectively while working independently or under general direction.
  • Advanced development experience using .NET technologies.
  • Strong foundation in Software Configuration Management and Software Quality Assurance.
  • Strong knowledge of .NET framework 4.x.
  • Proficiency in C# development.
  • Experience with Angular or Angular

    JS.
  • Experience developing RESTful web services using Web API.
  • Experience writing SQL for Microsoft SQL Server.
  • Strong understanding of object-oriented programming concepts.
  • Experience working with Git or Bitbucket.
  • Familiarity with ORM technologies, including Dapper .NET.
  • Experience with HTML, CSS, JavaScript, Type Script, and jQuery.
  • Experience working in a scrum development environment.
  • Familiarity with Section 508 compliance requirements.
  • Demonstrated communication skills and ability to work independently or under general direction.
What do you need to succeed in this role?
  • Master's degree and eleven (11) years of relevant experience, or Bachelor's degree and thirteen (13) years of relevant experience.
  • Engineering, math, or science degree required.

In compliance with this state's pay transparency laws, the midpoint of the salary range for this role is $145,000. This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location.

In addition, specific skills/experience required are as follows:

  • Values driven - You embody and model absolute integrity and servant leadership and you have a bias for action and continuous innovation.
  • Uncompromising problem solver - You see opportunities in every business challenge and can develop, articulate and implement solutions.
  • Collaboration - You are a relationship builder across all levels of the organization and across all business units.
  • Instills trust - You do what you say, without ego, and you follow through on commitments consistently and credibly.
  • Impact & influence - You are relentlessly focused on making a difference and can gain support for ideas, proposals and solutions.
About Tantus, a Sikich Subsidiary

Tantus, a Sikich Subsidiary, offers the public and private sectors a diverse platform of professional services across consulting, technology and compliance. Highly specialized and hands-on teams deliver integrated solutions rooted in deep industry experience. Our approach is strategically and thoughtfully designed to help our clients, teams and communities accelerate success.

Tantus, a Sikich Subsidiary, has approximately 2,000 team members and operates across North America, EMEA and APAC.

Total Rewards

Our team members enjoy expansive benefits ranging from competitive compensation and insurance options to wellness programs and a flexible time off policy. Sikich prioritizes team members' health, wellbeing and time spent with family, friends and in the pursuit of personal goals.

  • Flexible Time Off (FTO) policy activated on your first day
  • Paid holidays and year-end time off where feasible
  • Comprehensive wellness program with rewards
  • Flexible work arrangements
  • Health, dental, vision, life, and disability insurance options
  • HSA employer contributions
  • Eleven (11) paid holidays annually
  • Parental bonding leave
  • 401(k) with employer contributions
  • Tuition reimbursement
  • Employee and client referral bonus…
Position Requirements
10+ Years work experience
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