Last updated: October 2026
The Seattle Mariners have one internship open: Intern, Minor League Development, a season-long role that starts by 1 March 2027 and runs until the end of the 2027 minor-league season at one of five affiliates (Tacoma, Arkansas, Everett, Inland Empire or Peoria). It pays $11.00 to $20.77 an hour, "based on the state minimum wage of the affiliate location." It requires only a high school diploma and prefers college coursework, but it prefers experience with video and baseball technology such as BATS, Trackman and Hawk-Eye. It was posted on 21 September 2026 with no closing date on the Mariners' posting. This isn't a summer internship, and we found no Mariners front-office internship posted. Here's the cycle in plain words: you apply in fall 2026, and you start by 1 March 2027, about five months later.
Quick Facts
| Fact | Detail |
|---|---|
| Where to apply | Mariners Workday board (the Internships tile on the club's job opportunities page); the same role is listed on the Mariners TeamWork Online page |
| Application window (2027–28) | Open now. Applications for the 2027 minor-league season opened 21 Sep 2026. Applications for the 2028 season expected ~late Sep 2027 |
| Rolling? | No closing date on the Mariners' posting. The TeamWork copy shows an end date of 21 Oct 2026, a 30-day board setting, so confirm the posting is still live |
| Eligibility | High school diploma required; college coursework preferred. Must identify pitch types and be willing to relocate to the assigned affiliate. GPA and work authorization aren't stated |
| Duration | Start by 1 March 2027; ends with the 2027 minor-league season (no date given). Season-long, with home and road travel; listed as seasonal and part time |
| Compensation | $11.00 to $20.77 per hour, set by the state minimum wage of the affiliate's location, plus paid public transportation and merchandise discounts |
| Return offers | Conversion rate not published |
| Locations | Minor-league affiliates: Tacoma and Everett (WA), Arkansas, Inland Empire (CA) and Peoria (AZ). Front-office roles sit at T-Mobile Park, Seattle |
| # Programs | 1 internship open now |
Open now: one internship, Intern, Minor League Development, posted 21 September 2026 for a start by 1 March 2027. No front-office internship is posted.
This role is video, data and technology work, so data evidence helps. Externships are short, remote programs where you complete a real project for a real company, most commonly over 8 weeks. The Breaking Games E-Commerce Data Analysis & Strategy Externship builds the data-handling habits behind scouting and performance reports, and the Center for Improving Youth Justice Data Analytics Externship adds a second data portfolio piece. Explore all Externships.
What Is a Seattle Mariners Internship?
A Seattle Mariners internship, today, is the Intern, Minor League Development role. The intern runs day-to-day video and technology operations for one minor-league affiliate: capturing, tagging and uploading video in BATS, collecting bullpen and batting-practice data, running Trackman, Hawk-Eye, Edgertronic and Blast equipment, and helping prepare advance scouting reports before each series. Interns travel with the team for home and road games. The Mariners' job opportunities page also lists T-Mobile Park event staff and retail jobs, which are seasonal jobs and not internships. This page is about the club, not the MLB league-office program.
When Do Seattle Mariners Internship Applications Open for 2027–2028?
The Mariners run one season-long intake on a short lead. This year's role was posted on 21 September 2026 for a start by 1 March 2027, about 5.3 months ahead. An archived capture of the Mariners' own Jobvite page, dated 23 September 2024, shows a Baseball Operations intern posting that wanted candidates to start by 1 March 2025 and work through mid-October 2025. That's two late-September postings in two cycles we can see, with a gap year we couldn't check, so treat late September 2027 as expected, not confirmed.
Intern, Minor League Development is open. The Mariners' posting states no closing date, but the TeamWork copy shows an end date of 21 October 2026, so apply this month.
The interview process isn't published. A 2023 Reddit comment from an earlier applicant described recorded video answers for a Mariners analyst role, which may not match this one.
Interns must be available to start. You'll be assigned to one of five affiliates and must relocate there for all home and road games.
Season-long, with the end date set by the conclusion of the 2027 minor-league season. Plan around your spring and fall semesters before you accept.
Applications for the 2028 season are expected, going by postings on 23 September 2024 (archived) and 21 September 2026. Two data points with a gap year, so watch the board from early September.
How to read this page: our dates come from tracking previous recruiting cycles and daily posting data. Treat them as informed estimates based on historical patterns, not confirmed dates. The company's official careers page is always the most current source. If a role is posted there, go by that, even if this page suggests the window hasn't opened yet.
Why You Must Apply the Week Applications Open
The Mariners' own posting states no closing date, but the TeamWork copy of the same role shows an end date of 21 October 2026, exactly 30 days after posting. That looks like the board's default setting, not a deadline set by the club, though it means the TeamWork listing may drop off soon. A season-long role starting by 1 March also needs relocation to an affiliate, so the club has reason to move early. Apply this month on the Workday board, and don't rely on the TeamWork listing staying up.
Which Seattle Mariners Internship Programs Should You Target?
Only one Mariners student internship is posted. The other student routes are shown so you don't confuse them.
| Role | Focus | Term | Key skills |
|---|---|---|---|
| Intern, Minor League Development | Video and technology operations for one affiliate; advance scouting reports | Start by 1 Mar 2027 to end of the 2027 minor-league season; seasonal, $11.00 to $20.77 per hour | BATS, Trackman, Hawk-Eye, Edgertronic, video editing, pitch-type identification |
| Intern, Baseball Operations | Scouting support, research and advance scouting (2025 posting) | Not posted for 2027 | Check the board in fall |
| Front-office business internships | The careers page says internships span all departments | None posted today | Check the board |
| T-Mobile Park event staff and retail | Game-day jobs on the same Workday board | Seasonal jobs, not internships | Customer service |
The role is on the Mariners Workday board and the Mariners TeamWork page. In 2024 the Baseball Operations internship posted alongside it, so check the board for a repeat.
What Are the Eligibility Requirements?
The Intern, Minor League Development posting sets these rules:
• Education: high school diploma required; college coursework preferred.
• Experience, strongly preferred: BATS video charting software, TruMedia, PitchBase, Portable Trackman, Hawk-Eye and Edgertronic cameras; MLB or NCAA baseball experience; video editing in tools such as Movavi or Adobe Premiere Pro.
• Must: correctly identify pitch types, and be willing to relocate to the assigned affiliate for all home and road games.
• Availability: start by 1 March 2027 and work through the end of the minor-league season.
• Not stated: academic credit, GPA, work authorization and weekly hours.
Is This Open to College Students and Graduates?
Yes to both. The only education requirement is a high school diploma, and college coursework is preferred. But the role runs from 1 March to the end of the minor-league season, which overlaps a spring semester and a fall semester, so a full-time student needs to check with their school. The posting doesn't mention academic credit, so ask before you accept.
What Skills Do the Seattle Mariners Look For, and How Do You Build Them?
The posting names a technology stack. Video and charting: BATS, TruMedia and PitchBase, plus video editing in Movavi or Adobe Premiere Pro. Performance science equipment: Portable and stadium Trackman, Hawk-Eye, Edgertronic and Blast. Baseball judgment: correctly identifying pitch types is a must. Teamwork: supporting the affiliate's Trackman intern and coaches, and troubleshooting technology on the road.
Note: Only one Mariners internship posting exists, so there is no sample to chart. The skills above come from that single requisition.
How Is Demand for Data Analyst Interns Moving Right Now?
Data analyst intern postings · Sep vs Aug 2026
vs 37 in August
For Mariners applicants: the Mariners' board listed one internship on 17 October 2026, a Minor League Development role posted on 21 September with a March start. Most data analyst internships nationally start in summer, so this role's calendar is unusual.
Daily US job-posting counts, Sep 1–30 vs Aug 1–31, 2026. Covers under half of US postings; shows direction, not market size.
Build These Skills Before You Apply
Each skill below comes from the Mariners posting and maps to a remote Externship you can finish while the role is open.
| Skill (from real JDs) | JD evidence | Externship that builds it |
|---|---|---|
| Data collection and quality control | Support the affiliate Trackman intern and coordinate data collection and quality control | Breaking Games E-Commerce Data Analysis & Strategy |
| Analytics for decisions | Provide results from performance science equipment to coaches and staff | Center for Improving Youth Justice Data Analytics |
| Data tooling and automation | Capture, tag and upload video and data across home and road contests | Pfizer Advanced: AI-Powered Document Insights |
| Audience and content insight | Assist coaching staff with video and data-related projects | Pinterest Gen Z Consumer Behavior |
Pair a finished project with any footage or charting you've done for a college or amateur team. The posting prefers hands-on baseball technology experience.
What Is the Seattle Mariners Application and Interview Process Like?
The Mariners don't publish an interview format. Here's what the posting and past applicants show:
1. Find the role. Open the Mariners' Workday board, or the Internships tile on the club's job opportunities page.
2. Apply online. The TeamWork listing tells applicants to complete the follow-up application screen after clicking Apply Now. A former front-office intern on Reddit says walk-in résumés are unlikely to be considered.
3. Show your tools. Lead with BATS, Trackman, Hawk-Eye or video-editing work, and be ready to identify pitch types.
4. Interview and offer. Steps aren't published. One 2023 commenter described recorded video answers to five or six questions for a Mariners analyst role.
Plan your relocation before you accept: the role assigns you to an affiliate and travels with the club.
What Students on Reddit Say
Reddit has little on this role. These two comments are the closest first-hand accounts we found, and both concern other Mariners roles.
In January 2025, a former Mariners front-office intern told a job seeker to apply online and said the club probably wouldn't consider a walk-in résumé.
A commenter who interviewed with the Mariners for an analyst internship a few years before 2023 said it was recorded video answers to five or six questions, with time to think first. They found it easy but odd to talk to nobody.
How Do You Stand Out for a Mariners Internship?
Three moves. First, show tools, not just interest. The posting names BATS, Trackman, Hawk-Eye and video editing as strongly preferred, so put any hands-on use at the top of your résumé. Second, prove pitch-type identification, which is a must. Charting a college or amateur game and describing the process is direct evidence. Third, show you can relocate and travel for the season. The role goes to one of five affiliates, and reviewers will want to see that you can start by 1 March. The Mariners don't publish an applicant count or a conversion rate, so treat the internship as the goal and ask about baseball operations paths while you're there.
What Other Companies Should You Consider?
If you're aiming at the Mariners, these programs sit closest by sport or by function.
- MLBleague-office program, separate from any club applicationGuide →
- LA Dodgersanother MLB club with a front-office internship programGuide →
- New York MetsMLB club with a baseball analytics internshipGuide →
- Texas RangersMLB club with the paid Charley Pride FellowshipGuide →
- Sporting Kansas Citypro soccer club that hires interns three times a yearGuide →
Our sports internships summer 2027 guide maps league, team, media and betting programs in one place.
FAQ
Can I still apply for a summer 2026 Seattle Mariners internship?
No. The Mariners' board lists no 2026 internship. What is open is Intern, Minor League Development, posted on 21 September 2026 for a start by 1 March 2027, running to the end of the 2027 minor-league season. The next cycle is expected around late September 2027.
Is the Mariners internship a summer internship?
No. It's a season-long role. Interns must be available to start by 1 March 2027, and the end date is set by the end of the 2027 minor-league season. Interns travel with the affiliate for home and road games, so plan around your spring and fall semesters.
How much do Mariners interns earn?
The posting lists $11.00 to $20.77 per hour for this seasonal role, based on the state minimum wage of the affiliate's location. The Mariners also list paid public transportation and merchandise discounts, subject to eligibility. Weekly hours aren't stated, and Workday lists the role as part time.
Do I need to be in college to apply?
No. The posting requires a high school diploma and prefers college coursework. It strongly prefers experience with baseball technology such as BATS, Trackman and Hawk-Eye, and with video editing. You must correctly identify pitch types and be willing to relocate to the assigned affiliate.
Where would I work as a Mariners intern?
At one of the Mariners' minor-league affiliates: Tacoma, Arkansas, Everett, Inland Empire or Peoria. You relocate to the assigned affiliate and travel with the club for road games. Front-office roles sit at T-Mobile Park in Seattle, but none is posted as an internship today.
Is there a Mariners Baseball Operations or business internship?
Not posted today. An archived capture of the Mariners' own page from 23 September 2024 shows a Baseball Operations intern posting then, at $20.00 per hour. Check the Workday board in fall for a repeat, and treat Instagram claims of a 2027 posting as unconfirmed.
Where do I apply for a Mariners internship?
On the Mariners' Workday board, which the Internships tile on the club's job opportunities page links to. The same role is on the Mariners' TeamWork Online page, where you finish a follow-up application screen after clicking Apply Now. Walk-in résumés are unlikely to be considered.
Do Mariners interns get full-time offers?
The Mariners don't publish a conversion rate or class size. The posting is for a seasonal internship with no stated path to a full-time role. Ask about baseball operations or player development openings during your season, and keep checking the board for entry-level roles.
The Mariners' Minor League Development internship is open now and starts by 1 March. While you apply, a remote Externship takes about 5 to 10 hours a week and gives you a finished data project to discuss in the interview.
About the Author
Bifei Wang has spent 17 years focused on human flow and the growth of young professionals, spanning international education, career training and coaching, and recruitment process outsourcing. Over 7 years at Extern, he has had one-on-one sessions with thousands of students exploring careers in consulting, finance, tech, marketing, and data, giving him a firsthand view of how the job market has shifted for early-career professionals and what it actually takes to break in.
