Senior Mobile Developer Jobs in Maryland
Senior Mobile Developer jobs in Maryland are open across Baltimore, Annapolis, and Bethesda and other Maryland metros, with employers like Fleet Services by Cox Automotive, AST SpaceMobile, and Stanley Black & Decker hiring at every experience level. Find a role that fits below and apply directly.
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INTRODUCTION
Cox Fleet keeps your fleet moving! Headquartered in Indianapolis, Cox Fleet has grown to become one of the largest fleet maintenance companies in the country. Cox Fleet is the leading provider of on-site mobile maintenance and repair services nationwide, offering mobile on-site fleet service for light medium, and heavy-duty trucks and trailers. Cox Fleet also services customers utilizing its 50+ nationwide service centers; each offering accident repair, painting, refurbishment, and heavy mechanical repair. We are supported by a 24/7 in-house call-center and provide scheduled maintenance services and unscheduled services to fleets anywhere, anytime. Cox Fleet is currently hiring a Sr. Mobile Diesel Technician.
ROLE AND RESPONSIBILITIES
The Sr. Mobile Diesel Technician will be responsible for performing licensed DOT inspections, Preventative Maintenance inspections, light and advanced repairs, advanced mechanical/hydraulic/electrical and electronic diagnostics, and other duties as assigned. Heavily relied upon for advanced diagnostics and triage of complicated repairs by Mobile Diesel Technician I/II. Considered the Lead on jobsites by customers and Technicians. Functions as a consultant on the customer's behalf. A successful Sr Mobile Diesel Technician complies with all company policies and achieves high level performance metrics.
DUTIES:
- Perform scheduled preventative maintenance (“PM”), DOT Inspections and follow up repairs on light, medium and heavy-duty vehicles in a mobile/field environment.
- Perform minor adjustment and repairs on various types of truck equipment including, but not limited to the following: Electrical/Brake/Cooling Systems, Starters/Alternators, Fan clutches, Engine electronics, Diesel steering systems, Engines (gas and diesel), Transmissions (manual and automatic), Clutches, Differentials, etc.
- Diagnose, adjust, and repair various types of truck equipment including, but not limited to the following: Electrical/Brake/Cooling Systems, Starters/Alternators, Air conditioning systems, Fan clutches, Engine electronics, Diesel steering systems, Engines (gas and diesel), Transmissions (manual and automatic), Clutches, Differentials, etc.
- Inspect, test, and listen to defective equipment to diagnose malfunctions, using test instruments such as handheld computers and pressure gauges.
- Road test vehicles to diagnose malfunctions and to ensure that they are working properly.
- Identify problems, determine accuracy and relevance of information, using sound judgment to generate and evaluate alternatives.
- Independently manage parts inventory and equipment provided on company-issued service truck and perform periodic reconciliation.
- Maintain and operate company-issued service vehicle, conduct safety checks, and pre-/post-trip inspections of vehicle.
- Work with and listen effectively to clients and customers to assess their needs, providing information or assistance, resolving their problems, or satisfying their expectations.
- Manage concurrent assigned tasks, making effective judgments as to prioritizing work related activities and time allocations.
- Use hand tools, precision instruments, as well as Diesel tools, welding equipment, lift and jacks.
- Document according to company standards and upload pictures of work performed, parts used, and all findings observed on Repair Orders (“RO”) using company-issued iOS device and our proprietary TRAIT application.
- Accurately complete DOT forms and all other forms of documentation in timely fashion.
- Work with a high degree of independence and manage own daily schedule.
- Maintain a high level of productivity and be able to work within or close to most Standard Repair Times.
- Obtain parts from approved local and national vendors as necessary for the repairs to be performed.
- Communicate with management and support team via email or phone to obtain approvals on repair estimates, retrieve purchase order numbers and/or discuss RO findings notes.
- Perform all work in compliance with organizational safety, health and environmental policies, and federal regulations, to include OSHA, EPA, and DOT.
- Maintain company issued service truck, conduct safety checks and daily pre/post trip inspections.
BASIC QUALIFICATIONS
- High School Diploma/GED and 3 years’ experience in a related field. The right candidate could also have a different combination, such as any level degree/certification beyond a HS diploma/GED in a related discipline; or 5 years’ experience in a related field.
- At least 3 years of experience with refrigerated equipment.
- Possess and supply a set of hand tools necessary to perform required job duties.
- OEM training and certifications are preferred.
- Participate In And Complete All-in Company Required Training.
- This position follows regulations issued by the Department of Transportation’s (DOT) Federal Motor Carrier Safety Administration (FMCSA).
- Candidate must be able to successfully complete and pass a DOT-regulated pre-employment background screening and DOT physical prior to employment.
- A current and valid DOT medical card with more than four (4) months remaining until its expiration may be submitted in leu of a DOT physical. If the DOT medical card has four (4) months or less of validity remaining, a DOT physical will be required.
- Due to interstate operating authority commerce regulations, candidates must be at least 21 years or older.
- Safe drivers needed; valid driver’s license required.
- Candidate must hold a valid state-of-residence driver’s license, be able to obtain and maintain their Driver Qualification File.
CERTIFICATIONS
Required Certifications Or Obtained Within 18 Months
- ASE T8 (PMI) certification
- ASE 608/609 certification
Preferred Certifications
- ASE T2 (Diesel Engines) certification
- ASE T3 (Drivetrain) certification
- ASE T4 (Brakes) certification
- ASE T5 (Suspension) certification
- ASE T6 (Electrical and Electronic Systems)
- ASE T7 (HVAC) certification
- ASE A8 (Engine Performance) certification
- ASE L1 (Advanced Engine Performance Specialist)
- ASE L2 (Electronic Diesel Engine Diagnosis Specialist) certification
SKILLS & ABILITIES
- Understand the implications of new information for both current and future problem-solving and decision-making.
- Ability to lift, bend, climb, stand, and walk for long periods of time; ability to perform moderately heavy laboring work.
- Ability to exert oneself physically over long periods of time without tiring, which may include performing repetitive tasks.
- Communicates information (for example, facts, ideas, or messages) in a succinct and organized manner.
- Engages in effective two-way communication with individuals and groups.
- Ability to determine the type of tools and equipment needed.
- Ability to accurately judge which of several objects is closer or farther away from the observer, or the distance between an object and the observer.
- Use logic and reasoning to identify the strengths and weaknesses of alternative solutions, conclusions, or approaches to problems.
WHY COX FLEET?
- Weekly pay – get paid every Friday for added convenience and financial flexibility.
- Safe driving & tech efficiency bonuses.
- Safety boots & safety glasses reimbursement.
- Extreme weather gear (cold & hot).
- Uniforms provided with laundry service where available.
- Take the service truck home daily (stop paying for gas!).
- Tablet & company cellphone provided.
- Technical training provided to advance your career.
- Dedicated career path – Over 50% of our front-line managers are promoted from within.
BENEFITS:
- Health, dental, vision insurance starts DAY ONE of employment.
- 401(k) matching starts after 90 days, 100% match up to 6% contribution and an additional 2% discretionary contribution by the company.
- Accrue up to 200 hours (5-weeks) of Paid Time Off based on your tenure with the company.
- Tuition Assistance/Reimbursement.
- Adoption/Surrogacy assistance.
- Pet Insurance.
- Multiple ERG, diversity groups, and company paid volunteer hours.
- Employee discounts on new vehicle purchases, cellphone plans, ridesharing, home/rental insurance, wellness/fitness incentives and much more.
This posting is for informational purposes only and does not constitute an official job application. To be considered for employment, all candidates must submit their application directly through official Cox careers website. Applicants who complete Applications that are received through third-party postings, social media, or other channels will be invited to submit an official Application through the company’s career site.
See All 6 Senior Mobile Developer Jobs in Maryland
Find roles in Maryland that match your experience and apply in just a few clicks.
Find Senior Mobile Developer JobsSenior Mobile Developer Jobs by City in Maryland
Where Maryland roles are concentrated, by current openings.
Senior Mobile Developer Job Market in Maryland
A snapshot from current Maryland openings, updated as new roles post.
Who's Hiring
- Fleet Services by Cox Automotive3

- AST SpaceMobile1

- Stanley Black & Decker1

- T-Mobile1

Top Industries Hiring
- Automotive3
- Transportation & Logistics3
- Telecommunications2
- Manufacturing1
What Maryland Employers Look For
The qualifications that appear most often in senior mobile developer jobs across Maryland.
- 5 or more years of professional mobile development experience on iOS or Android
- Proficiency in Swift or Kotlin, with working knowledge of the other platform
- Experience with cross-platform frameworks such as React Native or Flutter
- Strong understanding of mobile architecture patterns including MVVM, MVI, or Clean Architecture
- Familiarity with CI/CD pipelines, automated testing, and app store deployment processes
- Bachelor's degree in computer science, software engineering, or a related technical field
Senior Mobile Developer Jobs in Maryland: Frequently Asked Questions
How many senior mobile developer jobs are there in Maryland?
There are 6+ senior mobile developer openings in Maryland on Migrate Mate as of June 2026, with the most roles in Baltimore, Annapolis, and Bethesda. New positions post regularly as employers across Maryland hire.
How much do senior mobile developers make in Maryland?
Senior mobile developers in Maryland earn a median of about $138,680 a year, based on May 2025 Bureau of Labor Statistics wage data, ranging from around $87,690 for the lowest 10% to over $222,610 for the top 10%. Pay rises with experience, specialty, and employer.
Which Maryland cities have the most senior mobile developer jobs?
Baltimore, Annapolis, and Bethesda have the most senior mobile developer openings in Maryland right now, with additional roles spread across smaller metros statewide.
Which companies hire senior mobile developers in Maryland?
Employers hiring senior mobile developers in Maryland include Fleet Services by Cox Automotive, AST SpaceMobile, and Stanley Black & Decker, based on current listings on Migrate Mate as of June 2026.
Are there remote senior mobile developer jobs in Maryland?
Yes. About 33% of senior mobile developer openings tied to Maryland are remote or hybrid as of June 2026. The rest are on-site roles based in Maryland metros.
How do I apply for senior mobile developer jobs in Maryland?
You can apply to senior mobile developer jobs in Maryland directly on Migrate Mate. Search the listings above, find roles that match your experience and preferred Maryland location, then apply to each one that fits.
See All 6 Senior Mobile Developer Jobs in Maryland
Find roles in Maryland that match your experience and apply in just a few clicks.
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