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Startup Software Developer Intern Jobs (NOW HIRING)

WallStreetQuants

Quantitative Developer Intern

New York, NY · On-site

$21 - $27.50/hr

As a Quantitative Developer Intern, you will work closely with quantitative researchers, traders ... Design, develop, and maintain software tools used by traders, researchers, and engineers. * Build ...

WallStreetQuants

Quantitative Developer Intern

New York, NY · On-site

$21 - $27.50/hr

As a Quantitative Developer Intern, you will work closely with quantitative researchers, traders ... Design, develop, and maintain software tools used by traders, researchers, and engineers. * Build ...

WallStreetQuants

Quantitative Developer Intern

New York, NY

$21 - $27.50/hr

As a Quantitative Developer Intern, you will work closely with quantitative researchers, traders ... Design, develop, and maintain software tools used by traders, researchers, and engineers. * Build ...

Fresh Digital Group

Developer Intern

Manhattan, NY · On-site

$21 - $27.75/hr

FRSH is looking for a bright and capable Developer intern with high energy who is an extremely ... Company startup experience preferred * High level of professionalism required * Strong ...

Fresh Digital Group

Developer Intern

Manhattan, NY · Hybrid

$21 - $27.75/hr

FRSH is looking for a bright and capable Developer intern with high energy who is an extremely ... Company startup experience preferred * High level of professionalism required * Strong ...

Social Impact

Software Engineering Intern

Washington, DC · On-site

Software Engineering Intern Location: Washington DC Metro Area (Hybrid / Occasional Onsite Meetups ... Internship We are an early-stage technology startup building a next-generation enterprise platform ...

Nirmata

AI Software Engineer Intern

San Jose, CA

As an AI/ML Software Engineer Intern, you will define and implement the AI/ML infrastructure ... This is a unique opportunity to contribute to a rapidly growing domain within a fast-moving startup.

Brilent

Software Engineer Intern

San Mateo, CA · On-site

Company Description Brilent is a well-funded, award winning startup located in the Silicon Valley ... As a software engineering intern, you will work alongside our small team of engineers to create new ...

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How much do startup software developer intern jobs pay per hour?

As of Jul 8, 2026, the average hourly pay for startup software developer intern in the United States is $22.89, according to ZipRecruiter salary data. Most workers in this role earn between $18.51 and $24.28 per hour, depending on experience, location, and employer.
What are the most commonly searched types of Startup Software Developer jobs? The most popular types of Startup Software Developer jobs are:

Quantitative Developer Intern

WallStreetQuants

New York, NY • On-site

$21 - $27.50/hr

Full-time

Posted 11 days ago

Job description

An NYC based hedge fund is seeking a talented and motivated Quantitative Developer Intern to join their technology and trading team. This internship is ideal for students who enjoy building high-performance systems, solving complex technical problems, and applying software engineering to financial markets.
As a Quantitative Developer Intern, you will work closely with quantitative researchers, traders, and engineers to design, build, and improve tools, platforms, and infrastructure that support trading strategies, research workflows, data analysis, and execution systems
Requirements
Responsibilities
  • Design, develop, and maintain software tools used by traders, researchers, and engineers.
  • Build systems for data processing, strategy research, backtesting, simulation, and performance analysis.
  • Assist in developing trading infrastructure, market data pipelines, and execution tools.
  • Optimize code for speed, reliability, scalability, and maintainability.
  • Work with large datasets and help improve data quality, storage, and retrieval.
  • Collaborate with quantitative researchers to translate models and research ideas into production-ready tools.
  • Debug, test, and document software systems used in live or simulated trading environments.
  • Contribute to automation, monitoring, and workflow improvements across the trading platform.
Qualifications
  • Currently pursuing a Bachelor's, Master's, or PhD degree in Computer Science, Engineering, Mathematics, Physics, Statistics, or a related technical field.
  • Strong programming skills in Python, C++, Java, C#, Rust, or another modern programming language.
  • Solid understanding of data structures, algorithms, software design, and debugging.
  • Familiarity with Linux, version control, and command-line development tools.
  • Strong analytical and problem-solving abilities.
  • Ability to work both independently and collaboratively in a fast-paced environment.
  • Interest in financial markets, trading systems, quantitative research, or data-driven decision-making.
Preferred Qualifications
  • Experience with high-performance computing, low-latency systems, distributed systems, or cloud infrastructure.
  • Familiarity with SQL, pandas, NumPy, or other data processing tools.
  • Experience building APIs, internal tools, dashboards, or research platforms.
  • Knowledge of networking, concurrency, memory management, or systems programming.
  • Exposure to financial markets, market data, order execution, backtesting, or risk systems.
  • Previous internship, research, open-source, or project experience involving production-quality software.

Benefits
What You'll Gain
  • Hands-on experience building software for quantitative trading and research.
  • Exposure to real-world trading infrastructure, market data systems, and analytical tools.
  • Mentorship from experienced quantitative developers, researchers, and traders.
  • The opportunity to work on projects with direct impact on trading and research workflows.
  • Experience developing reliable, scalable, and performance-sensitive systems in a collaborative technical environment.

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