Senior Software Engineer

Vaco by Highspring; Brentwood (TN); Sur place; USD 74 000 - 105 000; Plein temps

Résumé du poste

Vaco is seeking a hands-on Senior Software Engineer to modernize critical enterprise applications and systems, using scalable backend services, data workflows, and AI-assisted development tools. You will own modernization initiatives from assessment through production, and collaborate with teams to align with technology standards.

The role demands 8+ years in software engineering, strong C# and Python, API/data-processing experience, and cloud familiarity with Azure or AWS to deliver robust,

Qualifications

• 8+ years of professional software engineering experience, ideally building or modernizing enterprise applications.
• Strong object-oriented programming fundamentals with experience in C#, Python.
• Backend engineering experience involving APIs, data processing, and architecture.
• Experience with legacy codebases and modernization/refactoring.
• Practical experience with AI development tools such as GitHub Copilot, Cursor, Claude Code.
• Experience with Azure or AWS and scalable cloud application design.
• Ability to independently assess technical problems and execute solutions.
• Strong problem-solving skills and willingness to challenge outdated approaches.

Responsabilités

• Analyze, reverse‑engineer, and modernize legacy applications and backend systems.
• Own modernization initiatives from technical assessment and architecture through hands‑on development and deployment.
• Design and build scalable backend services, APIs, data-processing workflows, and integrations.
• Evaluate existing technology and determine the right modernization approach rather than defaulting to one programming language.
• Use AI-assisted development tools to speed up coding, refactoring, testing, troubleshooting, and documentation.
• Improve application performance, reliability, maintainability, and scalability.
• Collaborate with engineering teams to align modernized applications with broader technology standards.
• Take increasing technical ownership as applications and systems are modernized.

Connaissances

C#

Python

OO programming

APIs

Cloud (Azure/AWS)

AI tooling

Legacy modernization

Backend design

Outils

GitHub Copilot

Cursor

Claude Code

Azure

AWS

Description du poste

Senior Software Engineer - Application Modernization & AI-Assisted Development

Employment Type: 12+ Month Contract

Compensation: $65/hr (W2)

About the Opportunity

Vaco is partnering with an established enterprise organization seeking a hands‑on Senior Software Engineer to modernize business‑critical applications and systems.

This is a good fit for an engineer who enjoys digging into complex systems, figuring out how legacy applications work, and rebuilding them with modern architecture, scalable technologies, and AI-assisted development tools.

We're not looking for someone who simply maintains existing applications or delegates the development work. We need someone who still enjoys getting into the code, solving difficult problems, and owning modernization efforts from concept through production.

What You'll Do

• Analyze, reverse-engineer, and modernize legacy applications and backend systems
• Own modernization initiatives from technical assessment and architecture through hands‑on development and deployment
• Design and build scalable backend services, APIs, data-processing workflows, and integrations
• Evaluate existing technology and determine the right modernization approach rather than defaulting to one programming language
• Use AI-assisted development tools to speed up coding, refactoring, testing, troubleshooting, and documentation
• Improve application performance, reliability, maintainability, and scalability
• Collaborate with engineering teams to align modernized applications with broader technology standards
• Take increasing technical ownership as applications and systems are modernized

What We're Looking For

• 8+ years of professional software engineering experience, ideally building or modernizing enterprise applications
• Strong object-oriented programming fundamentals with experience in C#, Python
• Strong backend engineering experience involving APIs, integrations, data processing, and application architecture
• Experience working with legacy codebases and improving, refactoring, or rebuilding existing systems
• Practical experience with AI development tools such as GitHub Copilot, Cursor, Claude Code, or similar tools
• Experience with Azure or AWS and scalable cloud application design
• Ability to independently assess technical problems, recommend an approach, and execute it
• Strong problem-solving skills and a willingness to challenge outdated approaches

Equal Opportunity Notice

Highspring LLC (d/b/a Vaco by Highspring) and its parents, affiliates, and subsidiaries ("we," "our," or "Vaco by Highspring") are committed to the full inclusion of all qualified individuals and does not discriminate against any employee or applicant for employment because of race (including but not limited to traits historically associated with race such as hair texture and hair style), color, sex (includes pregnancy or related conditions), religion or creed, national origin, citizenship, age, disability, status as a veteran, union membership, ethnicity, gender, gender identity, gender expression, sexual orientation, marital status, political affiliation, or any other protected characteristics as required by applicable law. The company is also committed to ensuring that persons who need them are provided with reasonable accommodations; if an accommodation is needed to participate in the job application or interview process, please contact [e-mail] .

Vaco by Highspring also wants all applicants to know their rights that workplace discrimination is illegal.

Representation Notice

By submitting to this position, you agree that you will be giving Vaco by Highspring the exclusive right to present your as a candidate for the foregoing employment opportunity. Additionally, you agree to be included in our talent pool for future hiring for similarly qualified positions. You further agree that you have represented information about yourself accurately and have not affirmatively misrepresented your qualifications. Lastly, you agree to maintain as confidential, to the fullest extent permitted by law, any information you learn from Vaco by Highspring about the position and you will limit disclosure of information about the position only to the extent necessary to perform any obligations in furtherance of your application. In exchange, Vaco by Highspring agrees to exercise reasonable efforts to represent you through all solicitation, job screening and resume dispersal.

For residents of Ontario, Canada only: to the extent the position for employment is not with Highspring or not otherwise noted as vacant above, candidate should be informed that this role is to replace a presently employed person at Vaco by Highspring's client.

Privacy Notice

Vaco by Highspring respects your privacy and are committed to providing transparent notice of our policies.

• California residents may access Vaco by Highspring HR Notice at Collection for California Applicants and Employees here.
• Virginia residents may access our state specific policies here.
• Residents of all other states may access our policies here.
• Canadian residents may access our policies in English here and in French here.
• Residents of countries governed by GDPR and UK GDPR may access our policies here.

Additionally, submissions to this position are subject to the use of AI to perform preliminary candidate screenings, focused on ensuring minimum job requirements noted in the position are satisfied. More details about Vaco by Highspring's use of AI can be found here (https://www.highspring.com/ai-use-notices/). Further assessment of candidates beyond this initial phase will be conducted by recruiters and hiring managers. Vaco by Highspring does not know and cannot opine on if its client's use of AI products in hiring.

Pay Transparency Notice

Determining compensation for this role (and others) at Vaco by Highspring depends upon a wide array of factors including but not limited to:

• the individual's skill sets, experience and training;
• licensure and certification requirements;
• office location and other geographic considerations; and
• other business and organizational needs.

With that said, as required by local law, Vaco by Highspring believes that the following salary range referenced above reasonably estimates the base compensation for an individual hired into this position in geographies that require salary range disclosure. The individual may also be eligible for discretionary bonuses and/or participation in medical, dental, and vision benefits as well as the company's retirement plan (or similar retirement benefits).