API & Integration Engineer

Winixx Inc.; Dallas (TX); Hybrid; USD 110,000 - 150,000; Full time

Benefits offered by this job

Performance bonus program

Visa sponsorship available

Paid time off and company holidays

Equity participation

Job summary

Winixx Inc. is developing WinixxOS, an AOSP-based OS powering a range of devices. The API & Integration Engineer will build and maintain SDK APIs, ensure cross-device compatibility, and document APIs for third-party developers.

The role emphasizes involvement in foundational platform decisions, collaboration with a mission-driven team, and opportunities to influence a new hardware ecosystem from ground up.

Qualifications

• 3+ years of API/SDK engineering experience, ideally with Android/AOSP exposure.
• Familiarity with hardware-adjacent API design (sensors, payment hardware, input devices) is a plus.
• Strong understanding of REST/RPC or platform-native API design patterns.
• Solid documentation skills.
• Bachelor's degree in Computer Science or equivalent experience.

Responsibilities

• Implement and test core SDK APIs and device-class extensions
• Support integration testing across the SDK, simulator, and Winixx Studio
• Help maintain AOSP API compatibility across the custom fork
• Write and maintain SDK documentation and sample code
• Triage and resolve SDK-related bugs surfaced by internal teams and early developer partners
• Support hardware-specific API integration (e.g. POS payment hardware, console input hardware)

Skills

API/SDK engineering

Android/AOSP exposure

REST/RPC design

Documentation

Education

Bachelor's degree in Computer Science or equivalent

Job description

API & Integration

API & Integration Engineer

About Winixx

Winixx Inc. is a New York-based technology holding company operating a portfolio of over 35 SaaS platforms across freight, fleet management, financial infrastructure, and market intelligence. We are now building WinixxOS — a distinctive, AOSP-based operating system powering a full lineup of consumer hardware including phones, tablets, smartwatches, POS devices, and gaming consoles. Founded with a mission to modernize fragmented and underserved industries, Winixx builds technology that removes inefficiencies, creates transparency, and puts more value in the hands of the people doing the actual work. This is early-stage, high-ownership platform engineering — you would be shaping foundational decisions for a new OS, not implementing someone else's spec.

Role Summary

The API & Integration Engineer builds out and maintains parts of the Winixx SDK, supporting device-class extensions and ensuring integration points across the AOSP fork remain stable for third-party developers.

What You'll Do

• Implement and test core SDK APIs and device-class extensions
• Support integration testing across the SDK, simulator, and Winixx Studio
• Help maintain AOSP API compatibility across the custom fork
• Write and maintain SDK documentation and sample code
• Triage and resolve SDK-related bugs surfaced by internal teams and early developer partners
• Support hardware-specific API integration (e.g. POS payment hardware, console input hardware)

What We're Looking For

• 3+ years of experience in API/SDK engineering, ideally with Android/AOSP exposure
• Familiarity with hardware-adjacent API design (sensors, payment hardware, input devices) is a plus
• Strong understanding of REST/RPC or platform-native API design patterns
• Solid documentation skills
• Bachelor's degree in Computer Science or equivalent experience

• Competitive base salary commensurate with experience
• Performance bonus program tied to individual and company milestones
• Visa sponsorship available for the right talent
• Full-time role with a minimum one-year commitment
• Front-row seat at a company building a new OS and hardware ecosystem from the ground up
• Collaborative, mission-driven team environment
• Paid time off and company holidays
• Professional development and continuing education support

Winixx Inc. is an equal opportunity employer. We evaluate all applicants on the basis of qualifications, experience, and demonstrated ability without regard to race, color, religion, sex, national origin, disability, veteran status, or any other characteristic protected by applicable law.

This is a full-time position with a minimum one-year commitment. Visa sponsorship is available for candidates with the right qualifications and experience.

The compensation range reflected in this posting represents the minimum and maximum target range for this position. Individual pay within the posted range is determined by a candidate's demonstrated experience, educational background, skill set, and geographic location. Final compensation is established at the time of offer and may fall anywhere within the stated range based on these factors.

Compensation ranges reflect national US market data and are subject to change. Additional forms of compensation may include performance bonuses, equity participation, and other benefits as outlined in your offer documentation.