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25 algorithm development engineer intern jobs at 9 companies in Manhattan, NY

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Fullstack Software Engineer Intern (Global E-Commerce) - 2027 Summer
San Jose or Los Angeles or Singapore or New York City or London or Dublin or Paris or Berlin or Dubai or Jakarta or Seoul or Tokyo
OnsiteInternship
TikTok
TikTok: Global short-form video hosting and social media platform.
Pursuing a bachelor's or master's degree in computer science or related discipline; familiar with fullstack development, programming languages, data structures, algorithms, networks, databases, and web applications.
Java, Golang, Python, Scala, C++, JavaScript, TypeScript, APIs
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3w
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2027 Technology, Data, AI & Ventures Summer Internship Program - Software Engineer Intern
New York City, New York, United States
$30-$35/hr HybridInternship, Full Time
New York Life
New York Life: Provides life insurance, retirement income, and investment solutions.
Undergraduate or graduate student in a technical field (CS, AI, ML, SE, EE, math, physics), strong programming skills (C,C++,Java,C#), Linux/Windows proficiency, data structures and algorithms knowledge, authorized to work in the U.S., available full-time for an 11-week summer internship.
Linux/Unix, Windows, C, C++, Java, C#
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1w
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Software Engineering Intern
Boston or New York City
$100k-$110k/yr HybridInternship, Full Time
Datadog
DatadogNASDAQ: DDOG: Observability and security platform for cloud applications and infrastructure.
Pursuing computer science, software engineering, or related technical degree; strong data structures, algorithms, and software design fundamentals; coding experience and interest in AI-assisted tools.
Kubernetes
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Staff Software Engineer
New York City, New York, United States
$194k-$260k/yr HybridFull Time
Celonis
Celonis: Provides process mining and operational intelligence software solutions.
8+ YOEBachelor's degree in computer science, 8+ years of software engineering experience, significant database internals experience, and proficiency in modern C++ with complex algorithms and data structures.
C++, StarRocks, ClickHouse
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Summer 2027 Software Engineering Intern
New York, New York, United States
$180k/yr OnsiteInternship
PDT Partners
PDT Partners: Systematic hedge fund using quantitative models for global trading
Current bachelor’s, master’s, or PhD student in a rigorous technical field; strong programming, data structures, and algorithms; communication and problem-solving skills.
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Quantitative Developer Internship - 2027 [New York]
New York City, New York, United States
OnsiteInternship
Quantbot Technologies
Quantbot Technologies: Quantitative investment firm providing systematic trading strategies.
Bachelor's or master's enrollment in STEM; proficiency in C++ and Python or another scripting language; algorithms and data structures knowledge; interest in performance optimization, networking, and Linux internals.
C++, Rust, Python, Linux
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后端开发（社交互动方向）实习生 - TikTok直播
Shenzhen or Beijing or Shanghai or Hangzhou or Guangzhou or Los Angeles or Singapore or New York City or London or Dublin or Paris or Berlin or Dubai or Jakarta or Seoul or Tokyo
OnsiteInternship
ByteDance
ByteDance: Developing AI-driven content platforms and mobile applications.
Current bachelor's student or above, preferably in computer science; proficient in at least one programming language; strong foundations in algorithms, operating systems, networks, databases, and software engineering.
Java, C, C++, PHP, Python, Go
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Algorithmic Trading Developer – Vice President
Jersey City, New Jersey, United States
$142k-$213k/yr HybridFull Time
Citi
CitiNYSE: C: Global diversified financial services holding.
5+ YOE5+ years building high-performance low-latency trading systems using Core Java and distributed microservices; knowledge of FIX, JVM internals, and market data handling required.
Core Java, JVM, FIX, Solace, AMPS, Chronicle, KDB+, Ansible, Rust, CI/CD
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2027 North America Software Engineering Internship
Bellevue or Boulder or Denver or Irvine or New York or Seattle
$46-$62/yr HybridInternship
The Trade Desk
The Trade DeskNASDAQ: TTD: Cloud-based programmatic advertising platform for data-driven media buying.
Enrolled in a Bachelor's or Master's program, expected to graduate 2027–2028; fluent in one or more object-oriented languages; strong data structures and algorithms; available to work 3 days in office (Tue–Thu).
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