Software Engineer IV - API/UI

Company at a Glance

OpenX is focused on unleashing the full economic potential of digital media companies. We do this by making digital advertising markets and technologies that are designed to deliver optimal value to publishers and advertisers on every ad served across all screens.

At OpenX, we have built a team that is uniquely experienced in designing and operating high-scale ad marketplaces, and we are constantly on the lookout for thoughtful, creative executors who are as fascinated as we are about finding new ways to apply a blend of market design, technical innovation, operational excellence, and empathetic partner service to the frontiers of digital advertising.

We’re seeking a driven and experienced Software Engineer with strong full-stack expertise to help launch a new product within our platform. You’ll join a talented, remote-first US team and play a key role in developing self-service tools that simplify and automate complex workflows for media activation.

An ideal candidate is:

Open-minded – Welcomes feedback, learns from failure, and adapts quickly to change.

Proactive – Takes initiative to identify problems and drive thoughtful, effective solutions.

Self-motivated & Organized – Manages priorities independently and follows through with clarity and accountability.

What our team does:

Our team is responsible for delivering a new product within OpenX’s next-generation platform to help users activate their media more effectively. We focus on building scalable APIs and intuitive interfaces that give users access to our rapidly growing suite of AI-driven decisioning and optimization tools.

Key Responsibilities:

Lead the design and development of self-service APIs and user interfaces for a new 0→1 product

Leverage existing platform components to deliver scalable, performant and user-friendly solutions.

Partner with data science and product teams to turn advanced optimization algorithms into intuitive tools for media activation.

Facilitate collaborative discussions with team members and stakeholders to identify and deliver the best solutions to user and business problems.

Own end-to-end feature delivery, including architecture, implementation, testing, documentation, rollout, and adoption.

Promote engineering excellence through constructive code reviews, mentoring, and driving improvements in code quality, architecture, and platform best practices.

Required Qualifications:

8+ years of full-stack development experience with strong proficiency in Python for backend development and modern frontend technologies such as React and TypeScript.

Expertise in building RESTful APIs, including data modeling, error handling, and performance optimization.

Experience working with both SQL and NoSQL databases, including schema design, querying, and tuning for performance and scalability.

Experience with modern test frameworks such as pytest, Cypress and Playwright

Proven ability to launch new products, with the ability to navigate ambiguity and break down complex problems into clear milestones.

Strong collaboration and communication skills, with experience working closely with product and design teams to deliver user-facing features.

Preferred Qualifications:

Experience working on SaaS platforms with multi-step workflows, complex data models, or user-facing configuration tools.

Experience in digital media, marketing technology, or advertising technology

Familiarity with design systems, reusable component libraries, or frontend architecture at scale.

Experience with GraphQL APIs and related tooling.

Experience working in cloud-native environments using Kubernetes, Docker, and CI/CD pipelines. (ask us about our migration to Google Cloud Platform!)

Familiarity with AI-assisted development tools like Cursor and GitHub Copilot.

$170,000 - $180,000 a year

Pursuant to any state, local ordinance, or local hiring regulations, we will consider for employment any qualified applicant, including those with arrest and conviction records, in a manner consistent with the applicable regulation. 

OpenX is committed to fair and equitable compensation practices. For all applicants, the base salary range is noted above, per year + bonus + equity + benefits. A candidate’s salary is determined by various factors including, but not limited to, relevant work experience, skills, and certifications. 

A summary of our benefits, which include medical, dental, vision, 401k, equity and more, can be viewed here: https://www.openx.com/company/careers/ A candidate’s salary is determined by various factors including, but not limited to, relevant work experience, skills, and certifications.  

OpenX VALUES

Our five company values form a solid bedrock serving to define us as a group and guide the company. Our values remind us that how we do things often matters as much as what we do.

WE ARE ONE

We are one team. There are no exceptions. We are a group of strong and diverse individuals unified by a shared mission. We embrace challenges and win together as a team. We respect and care about our colleagues and cultivate an inclusive culture

WE ARE CUSTOMER CENTRIC

We innovate on behalf of our customers. We understand, respect, and listen carefully to our customers. We build great products to solve our customers’ problems. We manage our customers’ expectations clearly and honestly. We are a trusted partner to all of our customers - we act with integrity at all times. We care.

OPENX IS OURS

We are all owners of OpenX

We all have a voice to improve OpenX

We stake our personal and professional reputations on the excellence of our work

We are not interested in just 'doing our jobs'; we take ownership to drive results

WE ARE AN OPEN BOOK

We understand and respect what each of us does. We are eager to teach and share what we know with others, both internally and externally. We are eager to learn from others and we ask questions internally and externally. 

WE EVOLVE FAST

We take responsible risks and own and learn from our mistakes. We recognize and repeat success. We actively seek out and provide constructive feedback. We adapt quickly and embrace change. We tackle growth and learning with real urgency. We are endlessly curious.

OpenX TRAITS

Our three traits capture what makes a great team member at OpenX.

HUMBLE

Ideal team players are humble and demonstrate integrity. They put the team's success above their own, share credit generously, and value collective achievements. They are self-assured, open to coaching, and committed to continuous learning.

DRIVEN

Ideal team players are results-driven and motivated. They are curious, always seeking more to do, learn, and take on. As proactive problem-solvers, they take initiative without needing external motivation. They continuously think about the next steps and opportunities for improvement.

SMART

Ideal team players are smart and possess the intellectual acumen to understand the complexities of our organization and industry. They are interpersonally intelligent, good communicators, and exemplify sound judgment in their interactions across the company to foster a collaborative environment.

OpenX is committed to equal employment opportunities.

It is a fundamental principle at OpenX not to discriminate against employees or applicants for employment on any legally-recognized basis including, but not limited to: age, race, creed, color, religion, national origin, sexual orientation, sex, disability, predisposing genetic characteristics, genetic information, military or veteran status, marital status, gender identity/transgender status, pregnancy, childbirth or related medical condition, and other protected characteristic as established by law.

OpenX Applicant Privacy Policy

Applicants can review our Applicant Privacy Policy at any time by visiting the following link: https://www.openx.com/privacy-center/applicant-privacy-policy/.

Effective Date: November 21, 2024