Full-Time

Product Manager

Sandboxx Letters

Posted on 9/9/2026

Sandboxx

Sandboxx

51-200 employees

Digital to physical mail for troops

No salary listed

Middleburg, VA, USA

Hybrid

In-person work at the Middleburg headquarters is strongly preferred; remote candidates may be considered.

Category
Product (1)
Required Skills
Agile
Usability Testing/Engineering
Product Management
SCRUM
Data Analysis

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Requirements
  • At least 3 years of product management experience, ideally in a high-growth startup, technology company, or consumer product environment.
  • Experience owning products through the full product development lifecycle.
  • Experience working closely with Engineering, Design, Marketing, and operational teams.
  • Strong analytical skills and comfort using data to identify problems, evaluate opportunities, and make decisions.
  • Experience defining product objectives and key results and measuring product performance.
  • Strong understanding of customer discovery, product requirements, prioritization, experimentation, and iteration.
  • Ability to translate customer and business problems into clear product requirements.
  • Strong written and verbal communication skills.
  • Ability to influence and create alignment across teams without relying on formal authority.
  • Strong organizational skills and comfort managing multiple priorities and dependencies.
  • Working knowledge of Agile product development practices.
  • A high level of ownership and accountability for outcomes, not just delivery.
  • Curiosity about customer behavior and willingness to challenge assumptions.
  • Willingness to work in person from the Middleburg, Virginia headquarters is strongly preferred; remote candidates may be considered for the right fit.
Responsibilities
  • Own the product strategy, roadmap, and ongoing evolution of Sandboxx Letters.
  • Develop a deep understanding of Letters customers, their behaviors, needs, pain points, and motivations.
  • Use product data, customer feedback, research, and business performance to identify opportunities and prioritize work.
  • Define product requirements, success criteria, and key performance indicators for new features, improvements, and experiments.
  • Work closely with Engineering and Design throughout discovery, development, testing, launch, and iteration.
  • Drive product and business planning across Engineering, Marketing, Customer Happiness, Finance, Operations, and Fulfillment.
  • Prioritize product opportunities based on customer impact, business value, technical complexity, and operational realities.
  • Evaluate opportunities to improve acquisition, conversion, engagement, retention, and repeat usage.
  • Analyze market trends, customer behavior, competitive products, and potential partnerships.
  • Build business cases for product investments and make build, buy, or partner recommendations.
  • Develop and maintain product timelines, priorities, and cross-functional dependencies.
  • Ensure teams understand what is being built, why it matters, and how success will be measured.
  • Partner with Marketing and other teams on go-to-market strategies for product launches and improvements.
  • Monitor product performance after launch and use results to determine next steps.
  • Identify opportunities to simplify the Letters experience and remove unnecessary customer friction.
  • Communicate product decisions, priorities, tradeoffs, and results across the organization.
  • Learn the complete Letters customer experience from purchase through printing, fulfillment, and delivery.
  • Understand the product’s performance, key performance indicators, economics, and major customer segments.
  • Review product research, customer feedback, support trends, analytics, and historical product decisions.
  • Understand the technical and operational systems that support Letters.
  • Build working relationships with Engineering, Design, Marketing, Customer Happiness, Finance, Operations, and Fulfillment.
  • Own the active product roadmap and backlog.
  • Define or refine the core key performance indicators used to evaluate Letters’ performance.
  • Lead product discovery and cross-functional product conversations.
  • Advance prioritized improvements through the development process.
  • Establish a cadence for communicating product priorities, progress, and results.
  • Ship or meaningfully advance product improvements.
  • Use customer feedback and product data to evaluate early results.
  • Coordinate across Engineering, Design, Marketing, Operations, and Fulfillment.
  • Make tradeoffs when customer, business, technical, and operational needs compete.
  • Establish a repeatable process for customer discovery, prioritization, development, launch, and measurement.
  • Use experimentation and product analytics to validate assumptions and guide investment.
  • Identify opportunities for product growth or expansion.
  • Improve the customer experience by removing known friction points.
  • Surface insights about customer behavior and product opportunities to leadership.
  • Make recommendations about where Sandboxx should and should not invest in Letters.
  • Deliver measurable improvement in the performance and customer experience of Sandboxx Letters.
  • Establish a long-term product strategy for Letters.
  • Identify and validate new opportunities for Letters growth.
  • Help determine how Letters fits into the broader Sandboxx product ecosystem and military life cycle.
Desired Qualifications
  • Experience managing consumer-facing mobile and web products.
  • Experience growing or improving an established product rather than only launching products from zero.
  • Experience working in a startup or high-growth technology environment.
  • Experience with e-commerce, transactional, subscription, marketplace, or digital-to-physical products.
  • Comfort working closely with engineering teams and understanding technical constraints.
  • Experience with product analytics, experimentation, user research, and customer feedback tools.
  • Experience improving conversion, engagement, retention, or repeat usage.
  • Understanding of how operational systems affect the customer experience.
  • Comfort balancing near-term optimization with longer-term product strategy.
  • Experience with product analytics and experimentation platforms.
  • Experience conducting or partnering on customer research and usability testing.
  • Strong understanding of product discovery and modern product development practices.
  • Experience defining and monitoring product key performance indicators.
  • Experience with e-commerce, payments, subscriptions, or other transactional consumer products.
  • Experience working with operational or fulfillment-dependent products.
  • Familiarity with Agile and Scrum methodologies.
  • Experience working in a startup or rapidly evolving product environment.
  • Experience with digital-to-physical products or fulfillment workflows.
  • Experience building products for military members, veterans, or military families.
  • Familiarity with the military recruit and basic training journey.
  • Experience working on products where emotional connection and trust are important parts of the customer experience.
  • Experience improving a mature product with an established customer base.
  • Experience identifying new revenue or product expansion opportunities within an existing product.
  • A genuine connection to or interest in the military community.
  • Strong presentation and stakeholder communication skills.

Sandboxx offers a digital platform that connects the US military community with tools for communication, travel, finance, and career resources, anchored by its Letters service. The Letters service lets family and friends type a message with a photo on a phone, which Sandboxx prints and delivers as a physical letter to a military base, including basic training sites, with a return envelope for replies. The platform also provides military-focused travel and financial resources, all accessible through one app. Its goal is to keep service members and their families connected and supported through recruitment, active duty, and transition by providing practical, base-friendly solutions.

Company Size

51-200

Company Stage

Late Stage VC

Total Funding

$16.5M

Headquarters

Arlington, Virginia

Founded

2012

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Simplify Jobs

Simplify's Take

What believers are saying

  • Sandboxx said it scaled to profitability in the May 2026 Boathouse exit.
  • The company still serves 80% of incoming service members, giving strong distribution.
  • New 2026 products, including News and Community, broaden monetization beyond letters.

What critics are saying

  • Sandboxx depends on recruit-mail demand; a Pentagon policy change would crush core revenue.
  • Boathouse’s May 2026 exit signals ownership churn and potential pressure for a buyer.
  • Sandboxx News and Community create clutter; undifferentiated expansion risks product dilution by 2027.

What makes Sandboxx unique

  • Sandboxx Letters delivers physical mail to basic training mailrooms, fast and trackable.
  • The Air Force partnered with Sandboxx in February 2025 for trainee-family communication.
  • Sandboxx bundles letters, news, and Community into one military-lifecycle platform.

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Benefits

401(k) Retirement Plan

401(k) Company Match

Health Insurance

Family Benefits

Flexible Paid Vacation

Paid Parental Leave

Relocation Assistance

Remote Work Options

Hybrid Work Options

Unlimited Paid Time Off

Paid Vacation

Gym Membership

Wellness Program

Mental Health Support

Phone/Internet Stipend

Home Office Stipend

Stock Options

Company Equity

Conferences Attendance Budget

Professional Development Budget

Tuition Reimbursement

Adoption Assistance

Childcare Support

Pet Insurance

Sabbatical Leave

Commuter Benefits

Life Insurance

Disability Insurance

Dental Insurance

Vision Insurance

Meal Benefits

Employee Discounts

Professional Certification Support

Mentorship Program

Training Programs

Legal Services

Relocation Assistance

Growth & Insights and Company News

Headcount

6 month growth

1%

1 year growth

0%

2 year growth

-1%
Boathouse Capital
May 20th, 2026
Boathouse Capital Successfully Exits Sandboxx | Boathouse Capital

Boathouse Capital is pleased to announce that it has exited its investment in Sandboxx, an app-based platform that supports service members and their network of friends and family supporters from basic training throughout their military careers. Sandboxx onboards approximately 80% of incoming service members, has reached more than 6 million users, and operates products including Sandboxx Letters, Waypoints, and Community.

Sandboxx
Feb 6th, 2026
New frontiers in anti-drone munitions were on display at SHOT Show 2026

New frontiers in anti-drone munitions were on display at SHOT Show 2026. Cheap and disposable drones have proven to be effective as anti-armor and anti-personnel weapons, and as quick and fast recon elements. Their proliferation isn't slowing down either thanks to their wide-scale production and affordability thus making them a serious concern for any infantry force. Therefore, a number of anti-drone munitions are being developed to counter drone threats - and at SHOT Show 2026 expo, Sandboxx News had the opportunity to see three new dedicated anti-drone munitions. Drone Round Defense's purpose-built rounds for standard platforms. A lot of anti-drone solutions at the infantry level require a specific weapon system - be it a shotgun or electronic warfare measure - to be used. In a kinetic environment, that can be difficult to constantly manage for troops. However, the Drone Round Defense company is changing the game by introducing purpose-built rounds designed to be fired from standard rifles and machine guns. These are 5.56 and 7.62 NATO cartridges that fragment as they are fired. The K variant turns into eight small projectiles and the L variant turns into five slightly large projectiles. The rounds are belt-fed and suppressor-compatible and do not require any changes to the firing platform to be used. Instead, a user can simply swap magazines or belts and fire the on-demand, anti-drone munition. This simplifies logistics, and, since they are fired from semi-auto and automatic platforms, also allows for fast follow-up shots. The K rounds have an effective range of 55 yards (or 50 meters) and the L variant of 100 yards (or 91 meters). The rounds can also destroy fiber wires for wired drones. Norma's AD-LER shotgun rounds. AD-LER stands for Anti-Drone - Long Effective range and is a modern spin on anti-drone shotgun munitions. Developed by the Swedish company Norma, these rounds are essentially a high-tech, long-range birdshot and utilize around 350 tungsten pellets to fill the sky with shot. The AD-LER rounds can work with any 12-gauge shotgun. They are firing No. 6 shot with a case length of 2.75 inches. Their velocity is around 1,325 feet per second and their overall effective range 110 yards (or 100 meters). Tungsten is denser and harder than steel, which allows the pellets to retain their velocity and punch at greater distances. These tungsten pellets also offer more penetrating power to deal with purpose-built ruggedized drones. They can rupture aluminum, carbon fiber, and plastic, turning delicate electronics into scrap material. The AD-LER rounds are designed around the Benelli M4 A.I. Drone Guardian, a specialized semi-auto shotgun designed for anti-drone warfare. The mass amount of shot fired per round creates what's essentially a net of ammo to hit fast moving drones. Maverick's Skynet anti-drone net. Maverick's Skynet system is designed for dense urban environments where missed shots could cause casualties. The Skynet is a 12-gauge cartridge designed to function with any standard 12-gauge shotgun. When fired, the round separates into five tethered projectiles that are connected to a high-strength ballistic fiber. There are two variants: the single shot and double shot. The single shot fires a five foot wide net. The double shot fires two nets, one 14 inches and another 24 inches wide. The net tangles the drone up, causing it to crash. The tethered projectiles vary in material. The zinc option has an effective range of 320 feet, whereas the tungsten and lead options offer 420 feet. In the event of a miss, the system deploys a parachute to slow the projectiles and net down as they descend to avoid unintended casualties. The SkyNet system could be employed by both civilian law enforcement and military forces to protect sensitive areas and installations. Counter-drone measures will have to become a part of any successful military strategy. While there are plenty of high-tech solutions, the old infantry method of shooting lead, or tungsten, at them will still be the most common.

37th Training Wing
Feb 14th, 2025
New app helps expedite communication with BMT trainees

The Department of the Air Force's Basic Military Training has partnered with Sandboxx, a digital platform, as a way to facilitate communication and increase engagement between trainees and their loved ones during what can otherwise be seen as stressful time.

FinSMEs
Dec 13th, 2021
Sandboxx Raises $8M in Growth Funding

Sandboxx, a Washington, DC —  based platform navigating military life, closed an $8M growth funding round