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About Ker-twang

Founded in 2013, we design services and systems that work in the real world and measurably improve people’s lives. Drawing on human-centered design, behavioral science, systems thinking, and technology, we work from deep qualitative research to create tangible, tested solutions. The services and systems we’ve shaped are used by millions of people worldwide.

We don’t just advise. We embed ourselves in real contexts – clinics, courts, mobile money networks, and living rooms. We design, prototype, and test with real people, and we iterate and implement alongside our partners. We stay engaged until solutions work in practice, not just in theory.

What We Do

We partner with governments, researchers, and mission-driven organizations. We spend time understanding why people make the choices they do – and why systems operate the way they do. We're comfortable working within complex, regulated environments and with legacy systems that can't simply be ripped out and replaced. We build solutions – digital tools, policies, and services – that simplify, engage, and empower, and that we refine with real people before scaling.

  • Systems Thinking

    You have a problem that doesn't fit neatly into one department or solution. We help you understand the actual barriers—policy, technology, money, people – and figure out which ones matter most. We then work across your organization and stakeholders to build agreement on what to do about it. We’re pragmatic about what’s possible – and experienced at convening leaders to make momentum-generating decisions.

    Who needs this: Government agencies wrestling with how different departments connect. Nonprofits trying to coordinate with public systems. Funders trying to understand what's actually blocking change.

  • Effective Communication

    We use communication science to write copy, design materials, and craft messaging that gets through to people who are stressed, skeptical, or just trying to get through their day. Clear language. Culturally appropriate. Tested with the people who'll actually use it.

    Who needs this: Anyone trying to reach people with low literacy or communicate accross cultures. Systems explaining complex information. Organizations who need people to act. Services trying to build trust.

  • Behavior Change

    You want people to change how they do something – save more, seek treatment, apply for benefits, use a new system. But people are complicated. We spend time with people who aren't doing the thing you want them to do, and we figure out why. Not from surveys. Through real conversations, observation, and sometimes living the problem alongside them. Then we design interventions – services, systems, communications – based on what we learned, not what we assumed.

    Who needs this: Public health programs trying to shift how people make decisions. Financial services trying to build trust among new users. Courts or agencies trying to reduce non-compliance.

  • Digital Prototyping & Implementation

    We build working prototypes with our network of technologists and designers. We test them with real users. We iterate based on what we learn. And we stay involved through implementation so that what gets built actually matches what people need.

    Who needs this: Researchers testing interventions at scale. Government agencies launching new digital services. Nonprofits that need technology but don't have in-house capacity. Anyone scaling a pilot into something sustainable.

Who We Work With

We spend time understanding not just what people need, but why they make the choices they do. Then we work with your team to design services and systems that fit real life.

  • Academic Researchers

    Designing an effective digital intervention needs time spent identifying and refining the right medium, message, and messenger. We handle the thousand tiny design decisions that can determine whether your intervention lands. We design for efficacy and effectiveness by helping navigate engagement, language, culture, and the reality of your participants’ lives. We pair our track record of real-world execution with your science to execute high-quality experiments and implementations at scale.

  • Government Agencies

    You’re trying to deliver high-quality services while navigating budget cycles, politics, legacy systems, and competing priorities. You need a partner who understands that world, not someone selling you an idealized, Silicon Valley solution. We work within your constraints, not around them. We engage your community so you know what’s driving behavior, and we help you craft communication that cuts through the noise. We help generate momentum and foster collaboration across agencies and departments. And we stay through implementation to make sure that effective solutions get built and scaled.

  • Nonprofits & NGOs

    We help you reach and engage your clients. We find the beliefs, fears, opportunities, and obstacles that drive behavior. Then we help you design programs that resonate because they’re grounded in how people think and act. We work together to build measurement frameworks that capture what matters, not just what’s easy to count.

  • Essential Services: Utilities, Healthcare, Financial Services

    Low-income customers are often the most expensive to serve. We identify revenue-positive opportunities, then work with your team to design services that reduce bad debt, churn, and operational expense and increase customer success. When customers feel supported, understand their bills, and trust your organization, they work with you, not against you – reducing costs, increasing revenue, and improving customer satisfaction.

  • Foundations & Philanthropy

    Many of the hardest problems – how to reach marginalized populations, how to make public services actually work for the people who need them most, how to scale solutions that prove effective – aren't solved by strategy or technology alone. They need grounded exploration: conversations with people affected, rapid prototyping, honest assessment of what works and what doesn't.

    We help foundations fund exploratory research that moves beyond theory. We work with your grantees and affected communities to deeply understand a problem before rushing to solutions. We design and test prototypes in the field. We uncover the surprising, important, sometimes counterintuitive findings that can lead to real breakthroughs. We believe some of the best foundation investments are the ones that fund rigorous exploration of difficult questions – not because exploration guarantees answers, but because it prevents expensive mistakes and reveals the actual constraints and possibilities that matter. This kind of work is labor-intensive and requires staying close to the ground. It's also exactly the kind of work that generates the evidence funders need to make bigger bets with confidence.

Our team

We're pragmatists who believe that how you communicate matters as much as what you build, and that the voice of the people you serve should stay in the room through the entire project. Our team is small. That means senior people are on your project from day one, not handed off to a junior coordinator. We work with specialists—researchers, technologists, designers, policy experts—as each project needs them.

For new projects or media requests, please contact one of our partners below.

 
Harris Levine

Harris Levine
Miami
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Nate Bernhard

Nate Bernhard
Maine
Email LinkedIn