A Comprehensive Guide to Applying for Research Assistant Positions in the U.S.

Speaker

Moriaty

Background

Moriaty studied Biological Sciences as an undergraduate at a university in China, with a research focus on neuroscience, including neural circuits and computational systems neuroscience. Their undergraduate thesis was completed in a biomedical engineering laboratory.

After graduation, Moriaty spent one year as a Research Assistant (RA) at a U.S. university, working in biomedical engineering with a focus on neural engineering.

During the 2025 Fall PhD application cycle, Moriaty primarily applied to programs in Biomedical Engineering (BME) and Electrical and Computer Engineering (ECE) and subsequently received an offer from a U.S. engineering PhD program.

A note from the speaker: Much of this guide also incorporates experiences and perspectives shared by others, rather than being based entirely on my own experience. It may therefore be especially relevant to students with backgrounds similar to mine, but everyone should evaluate the advice in the context of their own goals and circumstances.

For anyone reading this because the current application cycle did not go as expected: try not to interpret an unsuccessful cycle as a judgment of your ability.

Graduate admissions are influenced by many factors beyond an applicant's control, including funding, faculty availability, institutional priorities, connections, and broader policy environments.

And if you are actively choosing to take a gap year or work as an RA, that decision can itself require considerable courage. An additional year spent developing as a researcher is not necessarily "lost time." If used intentionally, it can become an important period of growth and preparation.

Part I | Should You Become an RA?

1. Is an RA Position Right for You?

A useful question to ask is:

Will what I gain during this year outweigh the time and financial costs of taking it?

After completing an RA position or master's degree, applicants may be evaluated with the expectation that they have grown beyond where they were as undergraduates.

Before choosing the RA route, consider what you could realistically gain from the experience:

• Could you contribute to a publication or produce a meaningful research outcome?
• Could you obtain a strong recommendation letter?
• Could you build relationships with researchers in your field?
• Could you learn important new techniques or research methods?
• Could the experience help you address weaknesses in your current application?

An RA position may be particularly valuable for students who have limited undergraduate research experience, want to strengthen their research profile, or hope to transition into a new research direction.

2. Understand the Risks

Taking an additional year before applying again involves uncertainty.

Funding environments, university policies, visa regulations, and PhD cohort sizes may change from year to year. A stronger application also does not guarantee that the following admission cycle will produce the outcome you want.

Before committing to an RA year, it can be helpful to consider:

What if I apply again next year and the result is still not ideal?

Would you be willing to continue working as an RA, pursue a master's degree, apply in another country, or reconsider your career direction?

Having alternative plans can make the decision much less stressful.

Students should also investigate the situation at the specific institutions and laboratories they hope to join. Funding and recruitment conditions can vary substantially across universities and even across labs within the same department.

A PhD is also not the final destination. Career plans can change during graduate school, and changing direction—including leaving a PhD program or pursuing another degree or career path—is possible.

3. RA vs. Master's Degree

Both routes can strengthen a future PhD application, but they offer different advantages.

Advantages of a Master's Degree

A master's program may provide:

• access to multiple faculty members and laboratories;
• greater freedom to explore different research directions;
• structured coursework and institutional support;
• more opportunities to explore industry;
• a relatively clear student-status and visa framework;
• possible opportunities to transition into a PhD program.

Potential Disadvantages

Possible drawbacks include:

• substantial tuition and living expenses;
• coursework competing with research and application preparation;
• a longer time commitment;
• the possibility that weak academic performance could hurt future applications;
• fewer research-focused master's programs in some biological sciences fields.

Advantages of an RA Position

An RA position may offer:

• no tuition costs and, in some cases, a salary;
• significantly more time devoted to research;
• greater potential for meaningful research output;
• early exposure to the daily reality of PhD-level research;
• flexibility in duration;
• in some laboratories, the possibility of later joining the same group as a PhD student.

Potential Disadvantages

An RA is usually much more closely tied to a single laboratory.

This can mean:

• fewer opportunities to switch research directions;
• fewer structured social and professional opportunities than in a degree program;
• potentially complicated immigration or employment procedures;
• significant dependence on the PI and laboratory environment;
• a poor experience if the mentoring relationship is not a good fit.

In Moriaty's observation, students from biological sciences backgrounds often consider RA positions more frequently, while engineering students may have a wider range of master's and industry options.

4. RA vs. Graduate Study in China

There is no universally better option.

For students who ultimately hope to pursue research in the U.S., graduate training in China can also provide substantial scientific experience while reducing some of the financial and immigration uncertainty associated with moving abroad immediately.

At the same time, research experience outside China—particularly experience within the U.S. academic system—can help applicants understand U.S. research culture and build relationships with researchers who are familiar with U.S. PhD admissions.

The best choice depends on your research goals, available opportunities, financial situation, and tolerance for uncertainty.

5. RA vs. Industry Work or Internships

For applicants in biology and biomedical research, a research-intensive RA position is often more directly aligned with preparation for a research PhD.

Industry work can still be highly relevant when the role involves research closely related to your intended PhD field.

For traditional engineering disciplines, industry experience may overlap substantially with research skills, so applicants may have a wider range of useful alternatives.

The key question remains:

Does this experience help you move toward the research direction and career you want?

Part II | How to Find and Apply for RA Positions

1. When Are RA Positions Available?

There is no single RA recruitment season.

Some laboratories recruit throughout the year, while others review applicants only when a specific project or funding source becomes available.

Many positions begin around the summer or the beginning of the academic year, making spring a useful period to search actively, but applicants should not assume that all laboratories follow the same schedule.

Starting early gives you more time to identify laboratories, contact faculty, interview, and complete administrative or immigration procedures.

2. Where Can You Find RA Opportunities?

Personal Referrals

A referral is often one of the most effective ways to learn about openings.

You can ask:

• your current research advisor;
• previous summer research mentors;
• senior students or postdocs;
• alumni;
• friends or collaborators already working abroad.

A warm introduction can sometimes help your email reach a PI who might otherwise receive hundreds of unsolicited messages.

Social Media and Academic Communities

Faculty and laboratory members sometimes advertise RA positions through social media or academic communities.

When responding to posts from someone other than the PI, confirm that the laboratory and faculty member are actually aware of the recruitment.

Be particularly cautious with paid research opportunities or intermediary services.

Seminars and Conferences

Academic talks and conferences can create opportunities to speak directly with faculty.

If you genuinely find someone's work interesting, approaching them after a talk can be more memorable than sending an entirely cold email later.

University and Laboratory Websites

Check:

• laboratory websites;
• departmental job boards;
• university career pages;
• research institute websites.

A lab's People, Join Us, or Contact page may indicate whether research staff positions are available.

If nothing is listed, you can still email the PI directly.

Cold-email response rates may be low, so a lack of response should not necessarily be interpreted personally.

Funding and Hiring Conditions

Before joining a laboratory, try to understand whether the group has sufficient funding and what type of position is actually being offered.

Important questions may include:

• Is the position paid?
• What project would you work on?
• Are adequate research resources available?
• What responsibilities would you have?
• Is the position research-focused or primarily technical/support work?

3. A Typical Application Process

Although procedures vary by institution, the process may look something like this:

Step 1 | Contact the PI

Send a concise email explaining:

• who you are;
• why you are interested in the laboratory;
• how your background relates to the group's research;
• what type of RA opportunity you are seeking.

Attach your CV.

The email itself does not need to reproduce your entire research history. Detailed projects, techniques, and accomplishments can remain in the CV.

Step 2 | Interview

If the PI is interested, you may be invited to an online interview.

You may also speak with graduate students, postdocs, or other laboratory members to discuss possible projects and learn about the group.

Use these conversations not only to convince the lab to hire you, but also to evaluate whether you would actually want to work there.

Step 3 | Administrative and Immigration Procedures

Once both sides agree to move forward, the laboratory administrator and university may begin the formal appointment process.

The specific documents, employment category, and immigration status depend heavily on the institution and individual circumstances.

Applicants should confirm these requirements directly with the university's HR and international office.

4. How Can You Improve Your Chances?

One important point is that RA recruitment depends not only on applicant quality but also on whether the laboratory actually needs an RA at that moment.

A highly qualified applicant may still receive no response simply because a lab lacks funding, space, or an appropriate project.

That said, several strategies can help.

Highlight Relevant Skills

RA positions often involve joining an existing project quickly.

Make it easy for the PI to see which of your current skills could immediately contribute to their research.

Demonstrate Research Fit

Your email should show that you understand what the lab does and why that particular group fits your interests.

Use Referrals When Possible

Introductions through mentors, collaborators, or current lab members can be especially useful.

Be Flexible

If the PI does not respond, you may consider contacting a lab member politely to ask whether the group is currently recruiting.

And remember: for a recent graduate, a lab may care just as much about learning ability, reliability, and enthusiasm as about having an extensive technical background.

Part III | How to Choose the Right RA Lab

Moriaty summarizes the decision around two broad questions:

Does this laboratory provide the resources and opportunities you need?

and

Can you work there happily and sustainably?

1. How Important Is Location?

For a future PhD application, the academic network and mentorship available in the laboratory may matter more than geographic location alone.

If your long-term goal is a U.S. PhD but you cannot secure a U.S.-based RA position, research experience in another country can still be valuable—particularly if the PI has strong international collaborations and can provide meaningful mentorship.

At the same time, being physically based in the U.S. may make it easier to attend local seminars, conferences, and networking events and become familiar with the U.S. research environment.

2. How Closely Should the RA Research Match Your Future PhD?

A close match is useful, but it is not always necessary.

If you want to change fields, one strategy is to find a bridge position that uses some of your existing expertise while allowing you to acquire skills relevant to the new area.

For example, someone with animal neuroscience experience who hopes to move toward biomedical engineering might first join a neural engineering laboratory where animal experiments are still important, while gradually learning quantitative analysis or engineering techniques.

If your RA field and intended PhD field are very different, think carefully about what connects them:

• transferable methods;
• scientific questions;
• computational approaches;
• publications;
• research independence;
• strong mentorship and recommendation letters.

3. How Can You Evaluate a Potential Recommendation Letter?

For many RA applicants, a strong recommendation letter is one of the most important outcomes of the experience.

Before joining, you may be able to learn something about a PI's mentoring record by examining where previous RAs, students, or interns went afterward.

You can also ask current and former lab members:

• Does the PI know trainees' work well?
• Does the PI usually write letters personally?
• Does the PI actively support trainees' applications?
• Have previous RAs successfully moved into strong graduate programs?

Academic reputation and professional networks can matter, but the most powerful letter is generally one that comes from someone who knows your work well and can describe your scientific potential in detail.

4. Is There a Chance to Stay for a PhD?

Some laboratories occasionally recruit their RAs into PhD positions.

If this possibility is important to you, investigate the laboratory's history and ask the PI directly about future recruitment plans.

However, even strong PI support may not guarantee admission in programs where decisions are made by an admissions committee.

Treat a possible internal PhD opportunity as one option rather than your only plan.

5. Research Resources and Mentor Support

Consider whether the lab can provide opportunities for:

• meaningful project ownership;
• publication or other research output;
• learning new techniques;
• experimental design;
• scientific discussion;
• developing independent research thinking;
• interacting with collaborators and other faculty.

A well-known institution alone does not guarantee that an RA will receive meaningful training.

6. Laboratory Culture

Instead of asking current members a broad question such as:

"Is the lab culture good?"

ask specific questions:

• What time do people usually arrive and leave?
• How frequently do trainees meet with the PI?
• Do lab members eat together or interact outside experiments?
• How does the PI respond when experiments fail?
• How independent are RAs expected to be?
• What happens when someone needs time off?
• How are disagreements handled?

Specific questions usually produce more useful answers.

7. Laboratory Structure

The composition of a laboratory may also shape your experience.

A group with both graduate students and postdocs may provide multiple levels of mentorship.

A lab consisting primarily of RAs may operate very differently from one centered on graduate training, while a group composed mostly of senior postdocs may place greater emphasis on rapid publication and independent work.

There is no universally ideal structure, but you should ask whether the environment is appropriate for your current level of training.

Part IV | Making the Most of Your RA Experience

1. Relationships and Professionalism Matter

For many RAs, two important outcomes are:

a strong recommendation letter and/or a future opportunity in the laboratory.

That makes reliability and professional relationships particularly important.

Maintain a Learning Mindset

You are not expected to know everything when you arrive.

Being willing to learn, asking thoughtful questions, and improving after feedback often matter more than appearing highly experienced from the beginning.

Be Helpful

When appropriate, contribute to shared laboratory responsibilities and help colleagues with tasks you are capable of handling.

The point is not to perform favors in exchange for support, but to become a reliable member of the research team.

Respect Other People's Time

Training an RA takes effort.

Take detailed notes when someone teaches you an experiment, organize protocols carefully, and try to avoid repeatedly asking the same procedural questions.

Express Appreciation

A simple thank-you when someone spends significant time training or advising you helps maintain healthy professional relationships.

Balance External Activities with Lab Responsibilities

Conferences, seminars, networking, and PhD applications can all be valuable, but your laboratory responsibilities should remain clear.

If you attend an outside event, it can also be useful to bring something back to the group—an interesting paper, idea, technique, or potential connection.

Communicate When Problems Arise

If expectations or workload become difficult to manage, avoid letting frustration build silently.

First clarify what is expected, explain the specific challenge, and discuss whether priorities or timelines can be adjusted.

Good communication is often more productive than either immediately agreeing to everything or reacting only after reaching a breaking point.

2. Use the RA Period for Long-Term Development

An RA position should ideally be more than a temporary line on your CV.

Use the experience to ask:

• What scientific questions genuinely interest me?
• What kinds of experiments do I enjoy?
• Do I prefer experimental, computational, or engineering work?
• What type of mentoring helps me grow?
• Do I actually want to pursue a PhD?
• What skills am I still missing?

Talk with graduate students and postdocs about their experiences and learn about the broader direction of your field.

Seminars and conferences can also help broaden your perspective, as long as they do not consistently interfere with your core laboratory responsibilities.

The goal is to finish the RA period not only with more experiments completed, but with stronger scientific judgment and a clearer sense of where you want to go next.

Part V | Immigration and Visa Considerations

Important: Immigration rules are highly dependent on an individual's circumstances and can change over time. The following section summarizes experiences and considerations discussed in the original sharing and should not be treated as immigration or legal advice. Before accepting an RA position, confirm your eligibility and the appropriate immigration category directly with the hiring institution's international office and current U.S. government guidance.

1. Your Immigration Category Depends on the Position

Different universities and laboratories may appoint international RAs under different categories.

Depending on the institution, whether the position is paid, whether the researcher is still enrolled as a student, and other factors, possibilities discussed in the session included J-1, H-1B, and F-1 OPT.

Do not assume that another student's arrangement will apply to you.

Once a PI is interested in hiring you, contact the university's international office and explain:

• your current academic status;
• whether you have graduated;
• how long you plan to stay;
• whether the position is paid;
• your previous U.S. immigration history.

The university can then determine what appointment and immigration options are available.

2. Previous J-1 Participation May Matter

Previous participation in a J-1 program may affect eligibility for certain future immigration categories or another J-1 program.

The original sharing discussed issues including:

• the two-year home-country physical presence requirement under INA 212(e);
• the 12-month and 24-month bars that may apply to certain J-1 categories.

These are different rules and should not be treated as interchangeable.

If you have previously held J-1 status, provide your immigration history to the new institution's international office early so they can determine whether any restrictions apply.

3. Prepare Immigration Documents Early

The exact documentation varies by visa and appointment type.

For J-1 appointments, materials may include institutional immigration documents such as Form DS-2019 and evidence of sufficient financial support, along with other documents required by the institution or U.S. consulate.

Additional supporting materials may sometimes be useful depending on the case.

Because administrative processing and visa appointments can take time, begin the process as soon as your appointment is confirmed.

4. Allow Time for Administrative Processing

University appointments involve multiple offices, and processing speeds vary.

Laboratory administration, HR, international offices, and consular processing may all contribute to the timeline.

Stay in communication with both your PI and the relevant administrator, and avoid planning international travel around the assumption that every step will be completed immediately.

Most importantly, do not begin research using a visitor status or another immigration category that does not authorize the activity simply because the appropriate process is inconvenient or slow.

Always confirm your authorization with the institution before beginning the position.

Final Thoughts

An RA year is not automatically the right choice for everyone, and simply spending an additional year in a laboratory does not guarantee a stronger PhD application.

Its value depends on what you actually gain from the experience.

When evaluating an opportunity, consider whether it can help you:

• become a stronger and more independent researcher;
• acquire useful new skills;
• contribute meaningfully to a scientific project;
• receive strong mentorship and recommendation letters;
• clarify your future research direction;
• build academic relationships;
• and better understand whether a PhD is truly the path you want.

Most importantly, choose an environment where you can both grow scientifically and work sustainably.

A gap year or RA position is not necessarily a detour. Used thoughtfully, it can become an important part of your scientific training and help you make a much more informed decision about what comes next.