Application Security Engineer

| Greater Boston Area
Boston, USA
Circle is a global internet finance company, built on blockchain technology, powered by crypto assets, and dedicated to helping people everywhere create and share value.
We’ve already made sending money around the world free and easy using blockchain technology with Circle Pay. With Circle Invest, we’re expanding our offerings with a cryptocurrency investment product, enabling anyone to buy and sell crypto assets. Through Circle Trade, we’re market makers for the top crypto coins and offer OTC trading services. In March 2018, Circle acquired Poloniex, one of the world's leading token marketplaces.
We are looking for an Application Security Engineer to work with our engineering and product teams to secure Circle’s mobile product portfolio; Circle Pay, Circle Invest, and the Poloniex mobile app.
You should love pursuing hard problems, and be excited to learn new things quickly and independently. You will be asked to methodically and comprehensively understand the security posture and attack surface of these Circle products, and then develop the appropriate security controls. It’s crucial that you’re an effective communicator, as you’ll collaborate frequently with different engineering teams to identify and address security issues.

What you'll work on

  • Collaborate frequently with different engineering teams to identify and address security issues
  • Have a part in every aspect the development lifecycle
  • Attend the daily stand ups to ensure that product features have security “built in”
  • Address the both the mobile app and supporting REST API security issues, as security incidents occur

What you'll bring to Circle

  • 3+ years of application security experience (source code auditing, penetration testing, product assessments, vulnerability research, reverse engineering, etc)
  • Experience with Android and iOS native application security
  • Strong familiarity with the Java language and modern web development (e.g. JavaScript, AngularJS, Node.js, etc.)
  • Understanding of OWASP security concepts and common application security risks, such as XSS, CSRF, SQL Injection, Cookie Manipulation, etc
  • Familiar with vulnerability management and penetration testing tools : Burp and Metasploit
  • A “breaker” mentality, but effective at crafting the mitigating controls
  • Proven interpersonal skills: Ability to explain complex technical issues to both technical and non-technical audiences
  • Proven knowledge of applied cryptography

Preferred Experience

  • Experience as a developer on a mobile or web application team
  • Prior exposure to modern CI/CD pipelines

Circle was founded in 2013 by internet entrepreneurs Jeremy Allaire and Sean Neville. We’re backed by $250 million from investors including Jim Breyer (Facebook), Goldman Sachs, IDG Capital (Baidu, Tencent), General Catalyst (AirBnB, Snapchat), Accel Partners, and Bitmain, with offices in Boston, New York, San Francisco, Dublin, London and Hong Kong. Check us out at circle.com and download Circle Pay & Circle Invest for iOS and Android today. We are an equal opportunity employer and value diversity at Circle. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. About your personal information We respect your privacy and are committed to protecting your personal information. Please refer to our candidate privacy notice here. for more information on how we will be using your personal information. By submitting your application, you agree that you have read and understood the candidate privacy notice.

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Technology we use

  • Engineering
    • GolangLanguages
    • JavaLanguages
    • JavascriptLanguages
    • PythonLanguages
    • ScalaLanguages
    • AngularJSFrameworks
    • Node.jsFrameworks
    • Microsoft SQL ServerDatabases
    • PostgreSQLDatabases
    • RedisDatabases

Location

Boston, MA
Boston, MA

An Insider's view of Circle

What’s the vibe like in the office?

We have a team-oriented, open concept, collaborative office. I love working with people who are incredibly passionate about what they do.

Rachel

Office Experience Coordinator

How do you collaborate with other teams in the company?

If I can, I walk over to them, but I typically message them on Slack about an idea or contextualized piece of customer feedback. With that info, we can better understand how to enhance overall customer experience and how we can improve it.

George

Customer Experience Specialist

How has your career grown since starting at the company?

Coming to Circle from a law firm was a huge change for me, but I’ve learned so much in just a few months. From learning about cryptocurrency to employment law to stock options, I love that I get to work on something new every day. I’m excited to continue working for a company that gives me an opportunity to learn something new every day.

Karla

Paralegal

What's the biggest problem your team is solving?

Circle has been an ideal place for to gain technical knowledge from pros with deep expertise in their fields. Working alongside seasoned engineers and data scientists, a younger professional can learn the ins-and-outs of complex frameworks that would take years to master elsewhere. Circle has taken my technical skills to the next level.

Jon

Analytics

What are Circle Perks + Benefits

Health Insurance & Wellness Benefits
Flexible Spending Account (FSA)
Disability Insurance
Covered 100% by Circle
Dental Benefits
Covered 80% by Circle
Vision Benefits
Covered 100% by Circle
Health Insurance Benefits
Life Insurance
Circle offers group-term life insurance with a payout of the employee's annual salary for the duration of employment.
Retirement & Stock Options Benefits
401(K)
401(K) Matching
Circle's 401(k) retirement plan is administered through Vanguard and matches employee's contributions up to 3% of their annual base salary, with immediate vesting for matched contributions.
Company Equity
Circle offers generous stock options, including vesting over a four-year period and options refreshes every three years.
Performance Bonus
Child Care & Parental Leave Benefits
Generous Parental Leave
Flexible Work Schedule
Remote Work Program
Family Medical Leave
Vacation & Time Off Benefits
Unlimited Vacation Policy
Generous PTO
Circle has a 'take what you need' flexible vacation policy.
Paid Holidays
Paid Sick Days
Perks & Discounts
Beer on Tap
Casual Dress
Commuter Benefits
Company Outings
Stocked Kitchen
Some Meals Provided
Happy Hours
Recreational Clubs
Relocation Assistance
Circle offers relocation assistance to assist with moving costs and travel expense reimbursement.
Fitness Subsidies
Circle reimburses up to three months of any fitness program/gym membership, in addition to an annual gift card of $300 for a clean bill of health!
Professional Development Benefits
Job Training & Conferences

Additional Perks + Benefits

$150 per month for your cell phone bill!
Free cell phone upgrade every 18 months!!
$200 monthly stipend for lunch!!!

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