Our Team Performance Metrics
At EIR, we’re just as passionate about building a world-class product as we are about fitness and health.
We’re looking for people who thrive in the unorthodox — naturally driven, resourceful, and able to deliver high-quality work on efficient timelines. Every role here has room for leadership, and we believe in giving you the trust and autonomy to make an impact from day one.
We take a people-first approach: flexible schedules, work-from-anywhere freedom, and compensation that reflects the value you bring.
EIR is a scrappy early-stage startup. We’re not flush with perks or padding — we’re lean, focused, and investing in people who are ready to build something meaningful from the ground up.
What We Offer
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A chance to shape the future of how endurance athletes train
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Flexible hours and remote work
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Equity opportunities for long-term contributors
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An honest, passionate, and mission-driven team
Think you have the right qualities to join us?
Check out some of the positions we’re filling below.
LT1
Aerobic Threshold
The point where lactate begins to rise above baseline, marking the transition from easy, sustainable effort to moderate intensity.
Mobile Developer
Help shape the future of fitness tech by building intuitive and responsive iOS applications for EIR. You’ll work on features that connect users to their performance data, enhance their training experience, and bring our product vision to life — right from their phones.
Qualifications
Proven experience shipping iOS apps to the App Store
Strong knowledge of Swift, SwiftUI, and mobile UX best practices
Familiarity with BLE and CoreBluetooth for connecting to external fitness devices
Experience working with RESTful APIs and handling offline/low-connectivity scenarios
A builder mindset – excited to work on an early-stage product with high impact
Strong communication skills and comfort working in a lean, async team environment
Bonus: Experience with Garmin Connect IQ SDK, wearable data syncing, or Apple HealthKit
Responsibilities
Own the development of EIR’s iOS app using Swift and SwiftUI, from architecture to deployment
Integrate with Bluetooth LE (BLE) sensors, including our custom muscle oxygen monitor and potentially Garmin devices
Connect to and consume REST APIs for user data, analytics, and personalized coaching
Collaborate with product and design leads to turn prototypes into polished, user-ready features
Implement smooth onboarding flows, background training modes, and real-time performance visualization
Write clean, testable, maintainable code and contribute to the technical direction of the app
Monitor app performance and iterate quickly based on feedback from early users and testers
Performance Marketer
Help shape the future of endurance fitness by owning our paid marketing engine. As EIR’s Performance Marketer, you’ll design, launch, and optimize paid campaigns that acquire customers, validate messaging, and fuel growth. You’ll work across Meta, Google, TikTok, and YouTube, using data to uncover insights, guide spend, and scale what works. This is a hands-on role ideal for a results-driven growth marketer who loves testing, learning, and iterating fast.
Qualifications
2+ years running paid digital campaigns with demonstrable results
Proficient in managing ads through Meta Business Manager, Google Ads, and TikTok Ads Manager
Strong understanding of digital KPIs (CTR, CPA, LTV, ROAS) and performance funnels
Experience with A/B testing frameworks and multivariate testing
Comfortable with performance reporting using tools like Google Analytics, Looker Studio, or similar
Bonus: Experience marketing fitness, wellness, healthtech, or wearables
Bonus: Comfort writing or editing ad copy with strong emotional hooks and clear calls-to-action
Responsibilities
Launch and manage paid ad campaigns across Meta (Facebook/Instagram), Google Ads (Search and Display), TikTok, and YouTube
Create and test ad variations in copy, creative, CTA, and audience targeting to improve CTR, CPA, and ROAS
Collaborate with content, product, and design teams to develop assets aligned with audience pain points and product positioning
Analyze performance data, build dashboards/reports, and translate insights into actionable recommendations
Continuously optimize campaigns based on performance benchmarks and new test learnings
Support user acquisition strategy with research into competitor performance, audience segments, and emerging channels
Propose and own growth experiments to improve funnel conversion rates across awareness, acquisition, and retention
Social Media Lead
Help shape the voice of a brand that’s redefining endurance training. As EIR’s Social Media Lead, you’ll be at the forefront of content strategy and execution—creating meaningful, high-impact content that fuels engagement, educates our audience, and strengthens our presence across platforms. From video editing to community building, you’ll own our social presence and grow a loyal following among athletes, coaches, and performance-focused enthusiasts.
Qualifications
Proven experience managing social media accounts for a startup, brand, or creator (bonus: health, wellness, or sports focus)
Strong content creation skills—comfortable with video editing, graphic tools (e.g. Canva, CapCut), and writing short-form copy
Deep understanding of social SEO and platform-specific best practices
Creative, self-starting, and highly organized—you know how to execute ideas quickly and measure what works
Comfortable capturing content live at events, training sessions, or in-person product demos
Responsibilities
Own the content calendar: plan, create, and publish original content across Instagram, TikTok, YouTube Shorts, and other relevant platforms
Collaborate with athletes, coaches, and the EIR team to develop story-driven content (e.g. testimonials, tutorials, behind-the-scenes, launches)
Stay on top of platform trends, algorithm updates, and emerging formats to keep EIR ahead of the curve
Monitor performance metrics (engagement, reach, shares, follower growth) and iterate based on data-driven insights
Engage with our community—respond to DMs and comments, amplify user-generated content, and foster conversation in a consistent, brand-aligned voice
Coordinate with design, product, and partnerships to support major campaigns, launches, and ambassador efforts
Train Smarter. Perform Better
Unlock the science of endurance with real-time lactate threshold tracking.
