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Principal Software Engineer (MacOS)

Remote from Spain·Full-time·Added 2 days ago (last checked 28 Oct)

ThreatDown

1 open role

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Our summary

Salary: €100,000 a year
About €5,330 a month after tax, or €6,010 under the Beckham regime.
Work mode: Remote from Spain
Contract: Permanent, full-time hours
English: Required
Experience: Senior level

Visa options

The ad doesn’t mention sponsorship
Not a refusal, but not a yes. Worth asking in your first message.
Pay clears the EU Blue Card threshold
The advertised pay is over the €41,356 bar, so the route exists if ThreatDown uses it.

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Skills

Requirements

What we're looking for

Understanding of Object-Oriented development practices

Experience working with Apple’s System Extensions and Network Extension frameworks

Ability to work on a high-performance team in a high-tech startup or startup-like environment

Working knowledge of Swift and/or Objective-c coding languages

Experience with backend development on macOS, including data management, networking, and system integrations

Ability to debug and optimize macOS applications for performance

Familiarity with foundational macOS frameworks and development tools, including Foundation, Xcode, Instruments, and LLDB

Strong understanding of macOS system architecture and internals

Familiarity with macOS security and distribution requirements, including code signing, entitlements, sandboxing, privacy permissions, and notarization

Ability to debug, profile, and optimize macOS applications for performance, reliability, and resource efficiency

Nice to have

Understanding of cybersecurity principles, including least privilege, defense in depth, secure-by-default design, threat modeling, and attack-surface reduction

Familiarity with secure coding practices, vulnerability management, and common application and network security risks

Familiarity with Apple platform deployment and management technologies, including MDM and configuration profiles

Pay & benefits

What you'll get

Compensation: 100,000 Euros

Comprehensive medical, dental, and vision insurance coverage

Employee Referral Bonus Program 

Wellness programs  

Comprehensive Time Off policy

An opportunity to do something great for yourself and the world!

(Benefits and Perks subject to change by country/region)

The role

ThreatDown is looking for..

We’re not looking for people who know all the answers; we want people who can think creatively and are not afraid to bring forward new ideas. The problems we solve are meaningful, exciting, and constantly-evolving your code will support thousands of enterprises customers from emerging threats and restore confidence in using their computers. Our business product team is looking for a Principal Software Developer (MacOS), ready for the challenge of delivering great business products to thousands of users.

What you'll do

Develop new and exciting products in the fight against malware

Build cutting edge Enterprise grade endpoint protection for MacOS

Play a key role in designing and developing tools to support all the ThreatDown initiatives

Collect and process data and metrics to track emerging threats so we can keep one step ahead of the bad guys

Support your fellow developers; proactively communicate, document, unit-test, and peer review

Work collaboratively and effectively with a range of people in an Agile environment

Create superior results while building new skills

Work as a part of team to ensure everyone meets their goals

About ThreatDown

ThreatDown is a technology company whose careers site lists teams across Product Management, Research, Sales, and Accounting/Finance/Legal & Workplace, with openings such as MDR Platform Engineer, Backend Software Engineer (Research), and Director, EMEA New Channel Business. Its current hiring shown on the careers page is concentrated in Europe, including Cork (Ireland) and Italy, with a mix of remote and hybrid arrangements.

For international professionals considering Spain, ThreatDown currently has an open Product Manager, Detection & Response role in Spain, according to the platform's validated job data. The company recruits through a Rippling-hosted careers portal, and its European listings include remote-friendly positions (e.g., a remote MDR Platform Engineer role in Italy and a remote MDR Associate Analyst night-shift role in Ireland), suggesting flexibility in how distributed roles are worked. No further details about a Spanish office location, headcount, or company history were available in the supplied sources.

Good to know if you are moving

ThreatDown currently has an open 'Product Manager, Detection & Response' role in Spain, per the platform's validated job listings.
European roles on the careers page include remote options, e.g. 'MDR Platform Engineer (Remote) - Italy' and 'MDR Associate Analyst (Night Shift) - Remote, Ireland'.
Some roles are hybrid rather than fully remote, e.g. 'Accounts Receivable Specialist (Hybrid - Cork, Ireland)' and a Backend Software Engineer role in Bastia Umbra, Italy listed as Hybrid.
Applications are handled through a Rippling-hosted careers portal (ats.rippling.com/threatdown/jobs).

In their own words

About the company & team

ThreatDown is a leader in elite Managed Detection and Response (MDR), purpose-built to empower resource-constrained security teams with high-efficacy protection, without the complexity. As attacks grow faster and more automated, ThreatDown pairs proprietary AI and threat research with analyst judgment to deploy in minutes to deliver high-efficacy protection. Recognized by MRG Effitas, AVLab, and G2, ThreatDown scales security operations to intercept sophisticated attacks at the speed of modern threats. At ThreatDown, you’ll join a team driven by innovation, resilience, and a passion for empowering businesses to thrive securely. If you're ready to make a real impact in cybersecurity, we’d love to meet you.

All open roles at ThreatDown