Sr Solutions Engineer/ Application Developer

job summary:

Role Overview

We are seeking an experienced, forward-thinking Lead / Principal Full-Stack Software Engineer to join our engineering team. In this role, you will champion technical execution, spearhead system-wide modernization initiatives, and drive the evolution of high-performance architecture. You will handle everything from modern microservices and API strategy down to the intricate mechanics of refactoring and migrating mission-critical legacy applications.

Beyond technical mastery, you will serve as a foundational mentor to junior and mid-level developers, instilling engineering best practices, robust unit-testing cultures, and collaborative code craftsmanship across the entire department.

location: Holland, Michigan

job type: Contract

salary: $40 - 57 per hour

work hours: 8am to 5pm

education: Bachelors



responsibilities:

Primary Responsibilities

• Architecture & Evolution: Architect, implement, and maintain scalable N-tier applications and modern microservices frameworks using the Microsoft stack and advanced JavaScript ecosystems.
• Application Modernization: Strategize and execute the systematic breakdown, refactoring, and migration of legacy systems (including Classic ASP and monolithic environments) into modern cloud-native architectures.
• Performance Engineering: Diagnose performance bottlenecks and systematically implement caching strategies and database optimizations to ensure elite software reliability, throughput, and sub-second response times.
• Technical Leadership & Mentorship: Provide active engineering mentorship to junior and mid-tier developers. Champion architectural reviews, pair programming sessions, and foster an environment of continuous technical growth.
• DevOps & Quality Assurance: Drive code quality through strict test-driven frameworks (Unit, Integration) and collaborate with DevOps to implement reliable automated CI/CD deployment pipelines.

Experience & Qualifications Work Experience:

• 8+ years software development experience, including 5+ years web full-stack development experience utilizing relevant skills
• Experience in providing technical leadership
• Experience in mentoring junior developers

Skills and Knowledge:

• Strong verbal and written communication skills
• Excellent problem-solving skills, including troubleshooting and debugging
• Ability to learn quickly
• Passion for technology
• Naturally curious, willing to learn and experiment
• Self-directed, accountable, and disciplined to prioritize and manage multiple tasks

Required Skills

• Extensive IDE experience (Visual Studio, VS Code)
• MVC Framework, C#, HTML5, CSS, JavaScript, TypeScript, jQuery, Bootstrap, Git
• Angular (or React/Vue.js)

• N-tier Application Development, Microservices
• APIs, OData/RESTful services, message queues
• Unit testing (NUnit, Jasmine, Jest)
• Caching strategies, optimization techniques
• Application modernization, code refactoring
• Data modeling (3rd normal form), SQL Server/PostgreSQL
• Azure or AWS fundamentals
• DevOps: CI/CD pipelines, automated deployment

Nice to Have:

• Legacy Technologies: Classic ASP, legacy system migration
• UI Components: Telerik, DevExpress
• Cloud Services: Cloudflare, CDN management
• Microsoft Stack: UWP, MAUI, Blazor
• Additional: API Management, containerization (Docker), monitoring tools
• Database: NoSQL experience (MongoDB, Redis)
• Security: OAuth, JWT, security best practices

qualifications:

Experience & Qualifications

8+ Years of Professional Experience in full-stack software development building enterprise-grade software applications.

Proven track record of success migrating, modernizing, and optimizing legacy systems without impacting active production availability.

Demonstrated leadership capacity with a genuine enthusiasm for mentoring peers and elevating overall team performance.

Deep understanding of data modeling practices, specifically including 3rd Normal Form (3NF) optimization.

Equal Opportunity Employer: Race, Color, Religion, Sex, Sexual Orientation, Gender Identity, National Origin, Age, Genetic Information, Disability, Protected Veteran Status, or any other legally protected group status.

At Randstad Digital, we welcome people of all abilities and want to ensure that our hiring and interview process meets the needs of all applicants. If you require a reasonable accommodation to make your application or interview experience a great one, please contact

Pay offered to a successful candidate will be based on several factors including the candidate's education, work experience, work location, specific job duties, certifications, etc. In addition, Randstad Digital offers a comprehensive benefits package, including: medical, prescription, dental, vision, AD&D, and life insurance offerings, short-term disability, and a 401K plan (all benefits are based on eligibility).

This posting is open for thirty (30) days.