Summer 2026

Intern Product Security Engineer

Posted on 4/2/2026

Marqeta

Marqeta

1,001-5,000 employees

Open API card issuing platform

Compensation Overview

$45 - $53/hr

Company Historically Provides H1B Sponsorship

Remote in USA

Remote

Remote within the United States; Oakland office available for in-person collaboration if needed.

Category
Software Engineering (1)
Required Skills
Python
JavaScript
Threat modeling
Java
AWS
Go
DevOps
Requirements
  • Currently pursuing or recently completed a degree in Computer Science, Cybersecurity, or a related field
  • Foundational understanding of software development and common security concepts (e.g., OWASP Top 10)
  • Familiarity with at least one programming language (e.g., Python, Java, Go, or JavaScript) and at least one cloud platform, such as AWS
  • Curiosity and eagerness to learn about application security, cloud infrastructure, and CI/CD workflows
  • Strong communication skills and a collaborative mindset
Responsibilities
  • Assist with security design reviews and threat modeling under the guidance of senior engineers
  • Help build and maintain automated security testing tools integrated into CI/CD pipelines
  • Support the creation of security education and training materials for engineering teams
  • Research and document secure architecture patterns and best practices
  • Assist in proof of concept evaluations for application security solutions
  • Contribute to the day-to-day operations of the Product Security Team
Desired Qualifications
  • Cybersecurity or Cloud Computing Certifications
  • Open source software contributions
  • Involvement in Capture the Flag or other cybersecurity competitions or events
  • Examples of practical applications of skills in the areas of AppSec, DevSecOps, or Offensive Security

What Marqeta does: It provides a fintech platform for modern card issuing and payment processing, letting businesses create, issue, and manage payment cards through an open API. How its product works: Clients connect to Marqeta’s API to design card programs, issue cards, set rules (spend controls, funding, merchant restrictions), and process transactions; Marqeta handles the card network interactions, tokenization, settlement, and related services, earning fees per transaction and for setup or ongoing services. How it differs from competitors: It centers on a highly configurable API-driven platform that supports a wide range of card programs (expense management, disbursements, consumer payments) with fast onboarding and scalable infrastructure, rather than offering a single, fixed card product. What its goal is: To enable businesses to deploy flexible, scalable card programs quickly, expand digital payments, and become the go-to platform for card issuing and payment processing.

Company Size

1,001-5,000

Company Stage

IPO

Headquarters

Oakland, California

Founded

2010

Your Connections

People at Marqeta who can refer or advise you

Simplify Jobs

Simplify's Take

What believers are saying

  • European TPV grew 8x from 2022 to 2025, establishing strong momentum for its expanded money-movement stack.
  • The Banking Circle partnership consolidates three vendors into one, reducing costs and speeding European card program launches.
  • Unified platform lets firms manage issuing, accounts, and payments end-to-end, deepening client retention and expanding use cases.

What critics are saying

  • Cash App concentration poses existential risk; losing Block could trigger 30–50% revenue shock within 6–12 months.
  • Stripe and Adyen bundle issuing with acquiring, forcing Marqeta into an unsustainable margin war, eroding gross profit 5–8% in 12–18 months.
  • UBS cut its stake 39.7% in Q4 2025, signaling institutional doubt and likely causing 15–25% stock drop in 3–6 months.

What makes Marqeta unique

  • Marqeta bundles card issuing, virtual accounts, and money movement under one EU regulatory umbrella.
  • Its open API platform enables multinationals to launch cross-border card programs with unified program management.
  • Marqeta supports SEPA Instant, UK Faster Payments, and multi-currency virtual accounts across 30 new European markets.

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Benefits

Medical, dental, & vision coverage

Flexible time off

Paid family leave

Pet insurance

401k match

Equity

Monthly stipends

Company recognition & awards

Employee Stock Purchase Program

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

0%

2 year growth

0%
The Industry Spread
Jun 24th, 2026
Marqeta adds money-movement rails in 30 markets via Banking Circle.

Marqeta adds money-movement rails in 30 markets via Banking Circle. Marqeta's deal to plug Banking Circle's account and money-movement rails into 30 additional European countries is less a routine partnership than the clearest signal yet that the modern card-issuer is no longer content to be only a card-issuer. Having tracked the issuer-processor model since Marqeta's 2021 IPO, the pattern is familiar: the same convergence that pushed Adyen and Stripe to bundle issuing onto their acquiring stacks is now running in reverse, with a pure issuing platform reaching for the accounts-and-payments layer to defend its margins. The expansion lets Marqeta (NASDAQ: MQ) offer multi-currency virtual accounts and local European payment rails alongside its card-issuing platform, with Luxembourg-licensed Banking Circle supplying the regulated banking infrastructure underneath. It builds on Marqeta's 2025 acquisition of TransactPay, which gave it a European e-money and card-issuing footing, and aligns the European stack with what the company already runs in the United States and the United Kingdom. The scale signal is real but worth reading carefully. Marqeta processed close to $400 billion in total processing volume (TPV) in 2025 and now operates in more than 40 countries, and it cites 8x growth in European card-program TPV between 2022 and 2025 (Banking Circle; Marqeta via Business Wire). Eight-fold growth, though, is off a small base - Europe remains a minority of group volume, and Marqeta's revenue has long been concentrated in a handful of large customers led by Block's Cash App. Owning the account and money-movement layer is how Marqeta widens that customer base beyond single-product card programs. "Europe represents one of our most important growth markets, and bringing these tools to multinational and regional businesses enables them to build the innovative payment experiences that are crucial to their success," said Anthony Peculic, Interim Chief Product Officer at Marqeta. "By aligning our European offering with the U.S. and the U.K., we're providing a single platform for card issuing, account and money movement, and program management." Banking Circle framed its half of the deal as the regulated plumbing. "Our role is to provide the regulated banking and payment infrastructure that enables partners to scale confidently across Europe," said Mikkel Gronlykke, President of Banking Circle. The competitive response is already visible across the issuer-processor field. Paymentology raised $175 million to layer credit and stablecoin add-ons onto its issuer-processor stack, chasing the same multi-product logic. Stripe Issuing and Adyen continue to fold card issuing into their broader acquiring platforms, while bank-infrastructure incumbents FIS-owned Galileo, Enfuce and Marqeta itself compete for the same European program managers. The strategic question is no longer who can issue a card, but who can issue a card and move the money around it under one contract and one regulatory umbrella. The move also lands in a market re-rating embedded finance. Temenos's acquisition of additiv and AstroPay's embedded-finance launch point to the same thesis - value is migrating to whoever owns the orchestration layer between a brand and a regulated balance sheet. Equity analysts covering MQ have framed the Banking Circle deal as a test of whether Marqeta can turn an issuing narrative into an embedded-finance one, and whether that re-rates a stock that has traded on Cash App concentration risk since listing. For Marqeta's customers - fintechs, neobanks and increasingly non-financial brands embedding payments - the practical win is consolidation: fewer vendors, one programme-management console, and money movement that no longer requires a separate banking partner in each European market. For Banking Circle, it is distribution, putting its rails inside a platform that already reaches dozens of program managers. The bet is that bundling beats best-of-breed in European embedded finance, just as it did in card acquiring. Expect the next phase to be a credit and stablecoin push - the add-ons Paymentology is already selling - as issuer-processors race to become the single financial-infrastructure contract their customers never have to leave. Whether that widens Marqeta's customer concentration fast enough to satisfy the market is the number to watch in its next two earnings prints. For comparison on how acquirers are bundling from the other direction, see our coverage of Adyen's agentic-checkout push. Rick Steves has seen business and economics through many lenses. He joined the financial services industry in 2009, and has been a financial journalist since 2011. He holds a degree in Business Administration and has experience producing real-time news, from both buy-side and sell-side, as well as for retail traders, brokers and service providers. Steves' work has appeared in a variety of online publications including FX Street, NewsBTC, FinanceFeeds, and The Industry Spread. Rick has great interest in the dynamics of the trading industry. The never-ending clash between technology, economics, regulation, and more importantly, the people. * August 3, 2018 * December 13, 2024 * August 30, 2018 * June 28, 2018 * March 27, 2020 * June 23, 2026 * June 22, 2026 * June 21, 2026 * June 25, 2026 * June 23, 2026 * June 22, 2026

PYMNTS
Mar 31st, 2026
Marqeta debut decision tools as fraud threats increase.

Marqeta debut decision tools as fraud threats increase. By PYMNTS | March 31, 2026 Card issuing platform Marqeta has debuted a tool designed to combat increasingly sophisticated payments fraud. The company on Tuesday (March 31) announced an enhancement to its real-time decisioning (RTD) offering with "an AI-powered risk score that analyzes transaction risk levels at the point of the authorization decision." According to a news release, the new capabilities help Marqeta customers make smarter, data-driven risk assessments to prevent payment fraud and reduce false declines. The release cites projections that global payment fraud is expected to jump 153% by the end of the decade, highlighting the need for fraud detection models that can detect new fraud patterns and stay on top of emerging threats. Marqeta says it addresses this challenge by melding its RTD authorization rules with the predictive power of machine learning in order to continuously spot new fraud patterns and fend off emerging threats. "Today's fraud threats are evolving faster than ever, requiring businesses to keep pace as they scale their card programs," said Anthony Peculic, Marqeta's interim chief product officer. Please add us to your preferred sources list so our news, data and interviews show up in your feed. Thanks! "By embedding AI-powered controls and advanced machine learning into the authorization process, we enable customers to expand confidently while also strengthening their fraud defense as they scale." In other fraud prevention news, PYMNTS wrote Tuesday about new research that examines the rising threat of bots. That research shows that 56.3% of companies are now dealing with threats tied to bots or agents, 58.6% struggle with bot-driven fraud, and 52.3% say bot traffic picked up over the last 12 months. Financial services firms are feeling this strain most acutely: 60.6% said they've witnessed increased bot traffic, the largest share of any industry. Companies also lose an average 3.1% of annual revenue due identity verification gaps - a yearly collective hit of around $95 billion across the companies surveyed. "The most telling data point may be the confidence gap. Nearly all respondents - 96.3% - say they are confident in their ability to detect harmful bots. Yet nine in 10 report challenges from harmful bot traffic," PYMNTS wrote. "That mismatch helps explain why 'good enough' identity stacks are becoming a strategic liability. The companies that appear to be coping best are moving beyond fragmented checks toward integrated, global identity platforms." The research also showed that nearly 79% of companies using global identity platforms say vendor quality and reliability drive confidence in their verification procedures, while 65.6% report lower digital transaction decline rates and 62.5% saw lower false declines over the last year.

MarketScreener
Mar 26th, 2026
Marqeta: appoints Sarah Barkema as Head of Investor Relations.

Marqeta: appoints Sarah Barkema as Head of Investor Relations. Published on 03/26/2026 at 01:05 pm EDT OAKLAND, Calif., March 26, 2026 - Marqeta, Inc. (NASDAQ: MQ), the modern card issuing platform, today announced the appointment of Sarah Barkema as Head of Investor Relations, effective immediately. Barkema currently serves as Marqeta's Chief Accounting Officer and will continue in that role while also leading Investor Relations, where she will oversee the company's financial communications strategy and engagement with the investor and analyst community. "Sarah brings deep financial expertise and a strong understanding of Marqeta's business and the payments landscape," said Patti Kangwankij, Chief Financial Officer, Marqeta. "Her leadership and role as a trusted strategic advisor will be instrumental in further strengthening our engagement with the investment community and in communicating our significant opportunity ahead." Barkema has more than two decades of experience in strategic finance leadership, accounting excellence, and operational transformation. Prior to joining Marqeta, she was Chief Accounting Officer at Stitch Fix and before that Vice President of Finance and Reporting at Fortive. Earlier in her career, she held a series of finance leadership roles at other high-growth public companies. "I am excited to take on the new responsibilities of Head of Investor Relations, building on the strong foundation we've established," said Barkema. "Marqeta has a compelling strategy and meaningful opportunity ahead, and I look forward to engaging with the investment community as we continue to execute and deliver long-term value." About Marqeta Marqeta makes it possible for companies to build and embed financial services into their branded experience-and unlock new ways to grow their business and delight users. The Marqeta platform puts businesses in control of building financial solutions, enabling them to turn real-time data into personalized, optimized solutions for everything from consumer loyalty to capital efficiency. With compliance and security built-in, Marqeta's platform has been proven at scale, processing nearly $400 billion in annual payments volume in 2025. Marqeta is certified to operate in more than 40 countries worldwide and counting. Visit https://www.marqeta.com to learn more. Attachments * Original document * Permalink Disclaimer Marqeta Inc. published this content on March 26, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on March 26, 2026 at 17:04 UTC. (C) Publicnow - 2026

Yahoo Finance
Mar 13th, 2026
Morgan Stanley cuts Marqeta price target to $5 from $6, citing 'noisy results

Morgan Stanley has cut its price target on Marqeta (NASDAQ: MQ) to $5 from $6, maintaining an Equal Weight rating. The firm cited "noisy results" as a key constraint on investor interest, stating the company "remains a show-me story" following its fourth-quarter report. Marqeta announced Q4 results showing Total Processing Volume of $109 billion, up 36% year-over-year. Net revenue reached $172 million, whilst gross profit was $120 million, representing growth of 27% and 22% respectively. For full-year 2025, the digital payment technology company reported TPV of $383 billion and net revenue of $625 million, marking annual increases of 31% and 23% respectively. Marqeta provides card issuing platform infrastructure and issuer processor services.

Yahoo Finance
Feb 27th, 2026
Marqeta hits record $383B TPV in 2025, nears GAAP break-even with strong European growth

Marqeta has reported record total processing volume of $383 billion for 2025, up 31% year-over-year, driven by European expansion and strong demand for modern card issuing. Fourth-quarter TPV surged 36% to $109 billion. Annual net revenue reached $625 million and gross profit hit $437 million, representing increases of 23% and 24% respectively. The company neared GAAP break-even in Q4, posting a net loss of just over $1 million, a 95% improvement from the prior year. Value-added services now contribute over 7% of gross profit, with 18 of Marqeta's top 20 customers adopting these higher-margin solutions. For 2026, the company expects net revenue growth between 12% and 14%, with GAAP net income forecast at approximately $10 million.

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