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Join the Sinister Diesel Team

Become part of a leading innovator in high-performance diesel parts and accessories

Build Your Career With Us

Sinister Diesel is more than just a workplace - it's a community of passionate professionals dedicated to excellence in the automotive industry. Based in Roseville, CA, we're committed to American craftsmanship and innovation.

We offer competitive salaries, comprehensive benefits, and opportunities for professional growth in a dynamic, team-oriented environment.

Sinister Diesel Team

Current Job Openings

E-commerce Coordinator
Roseville, CA Full-time DOE
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Company Overview

Our business is growing and we need you. We are an established manufacturing company in the automotive industry and an online parts retailer looking for a detail-oriented and dependable individual to join our team as an Ecommerce Coordinator.

In this role, you will help maintain and improve our ecommerce website, support online merchandising and product content, and manage day-to-day catalog updates across the site and marketplace channels. This position blends website maintenance, product data management, merchandising support, and launch execution in a fast-paced environment.

Position Summary

The Ecommerce Coordinator plays an important role in supporting our online sales operations. This position is ideal for someone who is organized, accurate, comfortable working with product data and website content, and able to manage recurring daily tasks with consistency. The right candidate will be proactive, detail-focused, and comfortable collaborating across teams to keep the site accurate, usable, and conversion-ready.

Key Responsibilities

  • Build, update, and optimize product pages, including images, descriptions, specs, pricing, fitment data, and other website content.
  • Ensure product pages and product data are accurate, complete, organized, and aligned with inventory, branding, and promotions
  • Support website merchandising, category updates, featured products, seasonal promotions, and new product launches.
  • Create and optimize landing pages for campaigns, promotions, and product launches.
  • Maintain and organize a large product catalog, including variants, categories, filters, navigation, uploads, updates, and discontinuations.
  • Execute on-site SEO improvements across product and category pages, including page structure, metadata, and keyword usage
  • Work closely with internal teams and marketing to align site content with ads, email, promotions, and ecommerce priorities.
  • Monitor ecommerce activity and site performance, and identify or resolve issues that impact conversion, usability, accuracy, layout, page speed, or process efficiency.
  • Manage product data across website, Amazon, and eBay channels, ensuring consistency in branding, content, imagery, and accuracy.
  • Maintain organized records and documentation related to website updates and ecommerce operations.
  • Assist with order-related issues as needed and support marketplace listing activity when required.

Qualifications

  • Proven experience managing a full ecommerce website with a large catalog (1,000+ SKUs) is required
  • Hands-on experience with Miva is strongly preferred; experience with comparable ecommerce platforms at scale is also valued
  • Experience updating and managing products on ecommerce platforms such as Shopify, WooCommerce, Magento, BigCommerce, Miva, or similar systems.
  • Strong working knowledge of HTML/CSS for page builds, edits, and troubleshooting
  • Experience building and optimizing landing pages for conversion.
  • Solid understanding of SEO fundamentals, including on-page structure, metadata, and keyword usage.
  • Experience organizing product catalogs and managing the product lifecycle, including uploads, updates, discontinuations, variants, categories, filters, and navigation.
  • Comfortable working with bulk data in Excel or Google Sheets, including imports, exports, and data cleanup.
  • Strong attention to detail and accuracy
  • Good written and verbal communication skills.
  • Ability to stay organized and manage multiple priorities.
  • Dependable, team-oriented, and able to follow established processes.
  • Experience managing product listings on Amazon Seller Central and/or eBay.
  • Direct experience in automotive / aftermarket parts ecommerce or a similar product-based industry.
  • Familiarity with online retail operations, order flow, and ecommerce best practices.
  • Experience with Miva specifically.
  • Familiarity with conversion rate optimization (CRO) principles.
  • Experience working with paid traffic landing pages and alignment with Meta / Google Ads.

Benefits & Perks

  • Competitive salary based on experience
  • Comprehensive benefits package including medical, dental, and vision insurance
  • Paid time off and holiday pay
  • 401(k) retirement plan
  • Employee discount program
  • Opportunities for advancement within a growing company
  • Supportive, team-focused work environment

Schedule: 8 hour shift, Monday to Friday, No weekends, Overtime as needed

Work Location: In person at our Roseville, CA facility

Apply Now
Purchasing Assistant
Roseville, CA Full-time $18.00 - $25.00/hr
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Company Overview

Our business is growing and we need you! Sinister Diesel is an established manufacturing company in the automotive industry and a leading online retailer of aftermarket diesel performance parts. We're looking for a detail-oriented and driven individual to join our team as a Purchasing Assistant to help support our procurement and inventory operations.

Position Summary

We are seeking a reliable and organized Purchasing Assistant to support our purchasing department. In this role, you'll help ensure the accurate and timely ordering of parts and materials, maintain strong vendor relationships, and assist with inventory management. This is a key role that helps keep our production and fulfillment teams running efficiently.

Key Responsibilities

  • Assist in issuing purchase orders and tracking order status
  • Communicate with vendors to confirm pricing, availability, and delivery timelines
  • Maintain accurate inventory and purchasing records
  • Coordinate with receiving and warehouse teams to resolve order issues
  • Help monitor stock levels and suggest reorders when needed
  • Support procurement team with data entry and administrative tasks
  • Identify opportunities to streamline purchasing processes
  • Work closely with internal departments to ensure purchasing needs are met
  • Receiving purchase orders and verifying quantities and quality check the items

Qualifications

  • High school diploma or equivalent; college coursework or business-related training is a plus
  • 1+ years of experience in purchasing, procurement, or inventory management preferred
  • Proficiency in Microsoft Excel and basic computer systems
  • Excellent organizational skills and attention to detail
  • Strong verbal and written communication skills
  • Ability to multitask and meet deadlines in a fast-paced environment
  • Self-starter with a positive attitude and problem-solving mindset

Benefits & Perks

  • Competitive salary based on experience
  • Comprehensive benefits package including medical, dental, and vision insurance
  • Paid time off and holiday pay
  • 401(k) retirement plan
  • Employee discount program
  • Opportunities for advancement within a growing company
  • Supportive, team-focused work environment

Schedule: 8 hour shift, Monday to Friday, No weekends, Overtime as needed

Work Location: In person at our Roseville, CA facility

Apply Now

Why Join Sinister Diesel?

At Sinister Diesel, we're more than just a company - we're a community of passionate professionals dedicated to excellence in the diesel industry. Here's what makes us different:

  • Industry Leadership: Work with a recognized pioneer in high-performance diesel parts and accessories
  • American Craftsmanship: Be part of our commitment to local manufacturing and quality
  • Product Expertise: Gain deep knowledge of Ford Powerstroke, Chevy/GM Duramax, and Dodge/RAM Cummins systems
  • Team Environment: Collaborate with knowledgeable professionals in a supportive atmosphere
  • Growth Opportunities: We invest in our employees' development and career progression
Sinister Diesel Team

Our Employee Benefits

We offer comprehensive benefits designed to support you and your family's health, finances, and overall well-being.

Health Insurance

Choose from flexible medical plans tailored to your needs, with options for individuals and families.

Dental & Vision

Comprehensive dental and vision coverage to keep you and your family healthy.

Retirement Plans

401(k) plan to help you save for the future with company matching options.

Paid Time Off

Generous vacation, sick leave, and holiday pay to maintain work-life balance.

Employee Discounts

Significant discounts on our high-performance diesel parts and accessories.

Professional Development

Opportunities for training and advancement within the company.

Ready to Join Our Team?

If you're passionate about the automotive industry and looking for a rewarding career with a company that values its employees, we'd love to hear from you. Browse our current openings and apply today!