Sr. Software Engineer

Milwaukee, WI

Full Time

CNH

Experienced

Salary Range: $120K - 140K | Location: Remote to US
We kindly request that recruiting agencies and search firms do not contact us regarding this opening. Only direct applications will be reviewed

POSITION SUMMARY
The Senior Software Engineer is responsible for the end-to-end development and support of Prototek’s Instant Quote (IQ) platform, which manages primarily quoting, ordering, and shipping workflows. This role owns the core Laravel + Inertia.js/React system, covering backend services, frontend, and database performance. The engineer will collaborate with Product and business stakeholders (estimators, marketing, shipping, etc.) to clarify requirements and deliver business-driven solutions.

Candidates with additional experience in Python and adjacent systems (CAD integrations, AI/ML model serving) are preferred. This position is a hands-on individual contributor role, reporting to the Director of Software Engineering.

ESSENTIAL FUNCTIONS

Design, develop, and maintain features in the Laravel + Inertia.js/React platform, including quoting, orders, and shipping workflows.
Design and optimize SQL queries and workflows for high-volume transactions.
Collaborate with Product and stakeholders to refine ambiguous requirements into clear, practical solutions aligned with business value.
Contribute to both backend architecture and user experience improvements to balance system complexity with usability.
Partner with Data Science to integrate and support ML models in production environments.
Contribute to CI/CD pipelines and cloud infrastructure (GitHub Actions, ArgoCD, AWS, Kubernetes, Terraform).
Explore opportunities for performance and process optimization (e.g., runtime and process management improvements).
Participate in Agile/Kanban process, including sprint planning, retrospectives, and demos.
Conduct code reviews and uphold standards for engineering quality and testing.
Provide input on technical direction and raise ideas for continuous improvement.
Perform other duties as assigned.

TECHNICAL COMPETENCIES

Strong expertise in Laravel/PHP, including integrated frontend via Inertia.js.
Solid skills in React/TypeScript/TailwindCSS for frontend development.
Deep SQL knowledge with proven query optimization experience.
Familiarity with containerization and orchestration (Docker, Kubernetes).
Experience building and supporting production APIs at scale.
Preferred: Strong Python experience, FastAPI familiarity.
Preferred: Exposure to CAD/geometry processing, ML model serving, or data pipelines.
Preferred: Experience with RBAC, Stripe API, Salesforce API.
Preferred: Familiarity with ERP-related business processes (quotes, RFQs, sales orders, work orders, CRM).
Preferred: Experience working in ITAR-regulated environments.

BEHAVIORAL COMPETENCIES

Pragmatic and business-minded: Balances engineering quality with measurable customer and business impact.
Forward-looking: Stays current with modern technologies and practices but applies them thoughtfully, based on business value.
Stakeholder-focused: Engages with cross-functional partners to clarify problems and deliver the right solutions.
Data-driven: Designs systems that provide insights for continuous improvement.
Collaborative: Works effectively with Product, Data Science, DevOps, and other teams.
Adaptable: Comfortable working with ambiguity and iterating toward clarity.
Ownership mindset: Speaks up with ideas, takes initiative, and follows through to delivery.

EDUCATION & PROFESSIONAL EXPERIENCE

Bachelor degree in Computer Science, Engineering, or related field; or equivalent professional experience.
5+ years of professional software engineering experience.
Proven track record delivering scalable, production-grade Laravel applications.
Additional experience with Python and data/ML integrations strongly preferred.

WORK ENVIRONMENT

Works effectively in a fast-paced, deadline-driven environment.
Comfortable collaborating with a distributed team across functions (Product, Data Science, DevOps, Business stakeholders).
Brings a team-first mindset - able to communicate clearly, collaborate with diverse colleagues, and align around common goals.
Willing to share knowledge, provide constructive feedback, and mentor others in software engineering as the team grows.
Able to adapt to changing requirements and work with ambiguity to deliver practical solutions.

WORK HOURS/TRAVEL

Monday through Friday. 40 hours/week.
Fully Remote Position
Flexible scheduling in agreement with the supervisor.

WORK AUTHORIZATION
Applicants must be legally authorized to work in the United States. At this time, we are unable to provide visa sponsorship.

WHAT PROTOTEK OFFERS:

Career advancement opportunities
Flexible Schedule
Competitive pay scale
Paid time off (PTO) starting at 80 hours with annual increase for each year of service
9 paid Holidays annually
Education reimbursement program
Health, dental, vision, life and short-term disability insurance
Company paid life and long-term disability insurance
Employee Assistance Program (EAP)
401(k) match: 100% of 3% and 50% for 4% and 5%

ABOUT PROTOTEK
Prototek is a leading national provider of digital based manufacturing services including CNC machining, precision sheet metal fabrication, EDM, and additive manufacturing services. Prototek serves a variety of customer end markets, including aerospace, defense, medical, robotics, electronics, consumer, and general industrial. Prototek has manufacturing locations across the United States including facilities in New Hampshire, Wisconsin, California, Colorado, and Pennsylvania. Prototek is ISO 9001:2015 and AS9100D:2016 certified as well as ITAR Registered. For more information, visit www.prototek.com.

We are an Equal Opportunity Employer, making decisions without regard to race, color, religion, sex, national origin, sexual orientation, gender, gender identity, veteran status, disability, or any other protected class.

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We endeavor to make this site accessible to any and all users. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process, please contact 603-746-2001 or email us: HR@PROTOTEK.COM. You may also write to us and we will be happy to assist you with the application: Prototek, 205 Pine St., Hopkinton, NH 03229

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