Summer 2026
AI Engineer Intern
Posted on 4/29/2026
Littelfuse
5,001-10,000 employees
Industrial technology manufacturer for electrical safety
No salary listed
Chicago, IL, USA
In Person
Bachelor's, Master's
 Software Engineering (2) |
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- Currently pursuing a Bachelor's or Master's degree in Computer Science, AI/ML, Engineering, or a closely related field (rising juniors, seniors, or recent graduates preferred).
- Strong proficiency in Python 3.11+ with hands-on experience
- Familiarity with Git, Docker, and Linux/WSL environments.
- Solid understanding of LLMs, prompt engineering, embeddings, and vector databases.
- Excellent problem-solving abilities, documentation skills, and verbal/written communication.
- Proven ability to collaborate effectively in cross-functional teams and with diverse stakeholders.
- Contribute to new features, user interface/experience enhancements, integrations, and tool/function-calling capabilities under team guidance.
- Help design, implement, and optimize end-to-end Retrieval-Augmented Generation pipelines, including data ingestion, chunking, embedding generation, vector storage, retrieval, and post-processing.
- Evaluate and benchmark system performance, mitigate hallucinations, and document resulting improvements.
- Monitor emerging developments in LLMs, RAG systems, agentic workflows, and AI tools.
- Conduct experiments, analyze results, document findings, and deliver weekly insights and recommendations to the team.
- Prior hands-on experience with local LLMs, RAG systems, or open-source AI tooling.
- Experience with FastAPI, PostgreSQL, or cloud platforms (Azure, GCP, AWS).
- Prior research experience, including reading academic papers and conducting experiments.
- Deep passion for Artificial Intelligence field of study
Littelfuse is a diversified industrial technology manufacturer that designs and delivers products for the safe and efficient transfer of electrical energy. Its portfolio includes fuses, protection devices, sensors, and related components used across industrial, transportation, and electronics markets. The company serves more than 100,000 end customers from a global footprint spanning 20+ countries and about 16,000 associates, with a history dating back over 95 years. Littelfuse differentiates itself through its broad, deep product portfolio, broad geographic reach, and long-standing commitment to reliable, safe electrical solutions. Its goal is to provide dependable technologies that support safe power transfer and energy management across industries, continuing to grow its presence and impact while maintaining a diverse and inclusive workforce.
Company Size
5,001-10,000
Company Stage
IPO
Headquarters
Chicago, Illinois
Founded
1927
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Simplify's Take
What believers are saying
- Q2 2026 sales reached $738.8 million, and EPS jumped to $3.49 on August 13, 2026.
- Management raised the quarterly dividend 7% to $0.80 and kept buying back stock.
- AI data-center protection now supplies about 20% of business, with bookings up over 20%.
What critics are saying
- A 40% 2026 stock surge leaves Littelfuse vulnerable if AI-data-center orders normalize quickly.
- Automotive protection growth stays modest; Q2 2026 still depended heavily on electronics and data centers.
- China tariff retaliation or hyperscaler design wins shifting to Eaton or TE Connectivity can compress margins.
What makes Littelfuse unique
- Littelfuse dominates circuit protection, sensors, and power control across automotive, industrial, and data centers.
- Its NANO2 708 SMT fuses and FlatSuppressX TVS diodes target 48V AI-server architectures.
- C&K toggle safety covers extend Littelfuse into rugged human-machine safety hardware.
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Benefits
Health Insurance
Dental Insurance
Vision Insurance
401(k) Company Match
Paid Vacation
Paid Holidays
Life Insurance
Disability Insurance
Professional Certification Support
Flexible Work Hours
Remote Work Options
Growth & Insights and Company News
6 month growth
↑ 16%1 year growth
↑ 16%2 year growth
↑ 16%Littelfuse/C&K launches TSC Toggle Safety Covers. 13 August 2026 Littelfuse announced the launch of the Littelfuse/C&K TSC Series Toggle Safety Covers, designed to prevent accidental activation of toggle switches in critical control systems. Accidental switch actuation can lead to unintended equipment operation, safety hazards, and costly downtime. The TSC Series addresses these challenges with a precision spring-loaded mechanism that physically guards toggle switches while enabling intentional, one-handed operation. Engineered for demanding environments, the covers combine rugged construction with a clean, professional appearance suited for modern control panels. The TSC Series features a durable stainless-steel faceplate with a glossy black finish and an ABS cover available in multiple colours for clear visual identification of critical functions. Designed as a simple, drop-in upgrade, the covers are compatible with standard 12.0mm (15/32") mounting holes and accommodate switch lever heights up to 25mm, making them suitable for a wide range of existing toggle switch designs. "The TSC Series was developed to address a common but often overlooked risk in control system design - unintended switch activation," said Jesus Santos, Global Product Manager at Littelfuse. "By combining a reliable spring-loaded mechanism with rugged materials and intuitive operation, these covers help engineers improve system safety without adding complexity to their designs." Key features and benefits * Prevents accidental actuation: Spring-loaded protective cover reduces risk of unintended switching * Simple, intuitive operation: Easy one-handed opening and closing for intentional use * Rugged construction: Stainless-steel faceplate and durable ABS cover for long-term reliability * Visual identification: Multiple colour options support clear labelling of critical functions * Drop-in compatibility: Fits standard panel cutouts (12.0 mm / 15/32") for easy retrofitting * Designed for harsh environments: Suitable for demanding industrial, transportation, and outdoor applications The TSC Series Toggle Safety Covers are well-suited for applications where safety, reliability, and operational clarity are critical. These include industrial control equipment, commercial and off-road vehicles, marine systems, aerospace platforms, and military equipment, where preventing unintended actuation is essential to maintaining safe and reliable operation. By combining mechanical protection with ease of use and design flexibility, the TSC Series provides engineers with a practical solution for enhancing control system safety without redesigning existing hardware. Keep up to date with the most important news. Breaking barriers at the boundary: NYCU and TSMC rethink 2D chips. TI advances next-generation industrial systems. 13 August 2026
Littelfuse has announced a 7% increase to its quarterly dividend to $0.80 per share, reflecting management's confidence in the company's financial position and outlook. The dividend raise comes as the electronics components manufacturer reports strong second-quarter 2026 results, with sales of $738.78 million compared to $613.41 million a year earlier. Net income rose to $89.41 million from $57.34 million, whilst diluted earnings per share from continuing operations increased to $3.49 from $2.30. For the first half of 2026, total sales reached $1,395.75 million with net income of $164.55 million. The company has also completed a $56.75 million share buyback since 2024. Littelfuse stock closed at $445.20, having gained 78.7% over the past year.
Littelfuse, an electronic component provider, reported second-quarter revenue of $738.8 million, exceeding analyst estimates of $701.1 million. The figure represents a 20.4% year-on-year increase. The company's non-GAAP earnings per share of $4.19 surpassed consensus estimates of $3.78, marking a 10.7% beat. Adjusted EBITDA reached $174.7 million, above the $161.6 million forecast. Following the results, Littelfuse's stock rose 11.7%. CEO Greg Henderson attributed the strong performance to broad-based demand strength and disciplined execution. Over the past five years, Littelfuse has achieved an 8% compounded annual revenue growth rate. The Electronics segment, representing 55% of revenue, grew 15.5% year-on-year over the last two years, whilst the Automotive segment grew 1.6%. Analysts project 6% revenue growth over the next 12 months.
Littelfuse TVS Diodes targeted at 48V automotive systems. Article by: Littelfuse Inc. Littelfuse's new TVS diodes address a critical challenge in automotive design: protecting increasingly sensitive ICs. Littelfuse Inc. has launched the TP5.0SMD-FL (5kW) and TP1KSMB-FL (1kW) Series FlatSuppressX TVS Diodes, designed to protect 48V automotive electronics from transient overvoltage events while delivering ultra-low and stable clamping performance. Engineered for next-generation 48V systems in compliance with ISO 21780, the new TVS diodes address a critical challenge in automotive design: protecting increasingly sensitive ICs - such as DC/DC converters and gate drivers - without exceeding their absolute maximum ratings. Using Littelfuse's proprietary FlatSuppressX technology, the devices maintain a near-constant, low clamping voltage during fast transients and high-energy surge events, helping designers reduce system stress and overall BOM cost. Unlike conventional TVS devices, which can exhibit higher and variable clamping voltages, FlatSuppressX devices leverage an advanced foldback/snapback I-V characteristic to tightly control transient response while avoiding latch-up risk. This approach enables the use of lower voltage-rated components, improving design flexibility and cost efficiency. "The key advantage of FlatSuppressX technology is its ability to deliver extremely low and stable clamping voltage in 48 V systems," said Charlie Cai, Director of Product Management, Protection Business, Littelfuse. "This allows engineers to protect sensitive ICs better while meeting ISO 21780 requirements and reducing total system cost without latch-up risk." The TP5.0SMD-FL Series provides up to 5,000W peak pulse power capability in a DO-214AB (SMC) package. At the same time, the TP1KSMB-FL Series delivers 1,000W in a compact DO-214AA (SMB) package, offering scalable protection options for different system requirements. Both series are AEC-Q101 qualified and designed for high-reliability automotive applications. The devices are optimized for protecting I/O interfaces, power buses, and other vulnerable circuits in automotive electronics, particularly in 48V architectures.
Littelfuse has surged 40% since the end of March, driven by strong performance in the AI data centre market, according to Heartland Advisors' Q2 2026 investor letter. The industrial technology company's high-medium voltage protection products have become crucial for AI data centre infrastructure, with this segment now representing approximately 20% of its business. The company reported Q1 2026 net sales of $657 million, up 19% year over year. Bookings increased more than 20% annually whilst earnings per share continued to rise. Management has been returning cash to shareholders through dividends and share buybacks. Despite recent gains, Littelfuse trades at a discount to peers, which average nearly 40 times earnings. The stock closed at $416.31 on 14 July 2026, with a market capitalisation of $10.53 billion.