The Role
The Senior Full Stack Developer will build intuitive React interfaces and resilient Python backends while implementing automation and AI features for telecom operators. Responsibilities include developing scalable web applications, optimizing data processing, collaborating with product teams, and maintaining technical quality.
Summary Generated by Built In
The Opportunity:
As a Senior Developer, you’ll have significant autonomy to shape how some of the world’s largest telecom operators communicate with consumers and detect issues across their networks. You’ll help evolve the platform into a proactive, intelligent system built around Observe - Think - Act workflows, designing autonomous, AI‑driven operations that surface insights, trigger actions, and streamline complex network processes at scale.
You’ll work across the full stack, building intuitive interfaces in React and architecting resilient Python backend systems capable of handling massive volumes of time‑series telemetry. You’ll join a dynamic, experienced global product and engineering team, collaborating with specialists across mobile SDKs, cloud platforms, and large‑scale distributed systems, while working directly with global customers.
If you’re excited by the challenge of building intelligent systems, solving complex data problems, and driving meaningful impact at global scale, this role offers the scope and technical depth to do your best work.
- Full-Stack Development: Develop and maintain robust, scalable web applications using React, Redux, and modern backend frameworks.
- Automation & AI Features: Move the platform from reactive reporting to proactive operations by implementing "Observe-Think-Act" loops for network outage detection and communication.
- Maintain Technical Quality: Write clean, maintainable, and efficient code while conducting high-signal code reviews to elevate engineering standards.
- Collaborate Cross-Functionally: Work closely with Product teams to translate emerging AI capabilities into high-performance features for our global operator clients.
- Scale Data Processing: Help maintain and optimize backend services capable of handling high-volume network telemetry and time-series data.
- Experience integrating third-party APIs, AI services, webhooks, and event-driven workflows into production applications.
- 5 to 8 years of professional software engineering experience. Experience in mentoring or leadership.
- Strong proficiency in Python (FastAPI or Django) and experience designing scalable RESTful APIs.
- Proficient in React and Redux with hands-on experience building complex, data-heavy web applications.
- Hands-on experience using AWS to build and scale web applications, including containerization (Docker/Kubernetes).
- Systems Thinker: Strong ability to break down complex manual problems into deliverable, automated technical sub-tasks.
- PLUS: AI Frameworks: Hands-on experience deploying AI agents into production or proven exposure to tools like LangChain, LangGraph, or LlamaIndex.
- PLUS: Experience with anonymization techniques, data privacy and GDPR.
- PLUS: Domain: Understanding of network monitoring, telecommunications data, or performance testing.
About Ookla
Ookla, an Accenture company, is a global leader in connectivity intelligence that brings together the trusted expertise of Speedtest®, Downdetector®, Ekahau®, and RootMetrics® to deliver unmatched network and connectivity insights. By combining multi-source data with industry-leading expertise, we transform network performance metrics into strategic, actionable insights.
Our solutions empower service providers, enterprises, and governments with the critical data and insights needed to optimize networks, enhance digital experiences, and help close the digital divide. At the same time, we amplify the real-world experiences of individuals and businesses that rely on connectivity to work, learn, and communicate. From measuring and analyzing connectivity to driving industry innovation, Ookla helps the world stay connected.
Our Benefits
Ookla offers competitive salaries in addition to robust, health and wellness-focused benefits. We are committed to work-life balance with paid time off when you need it.
We are committed to work-life balance with Flexible Time Off, Volunteer Time Off, and paid holidays. We offer family building and caregiving support and generous Family Care and Parental leave, when you need it. We also provide Fitness Reimbursement and access to wellness programs, ensuring our team stays healthy both physically and mentally.
If you're seeking a dynamic and collaborative work environment where you can see the direct impact of your performance and thrive both personally and professionally, then Ookla is the place for you.
Compensation Range
Ookla provides a range for the base pay. Factors that may be used to determine your actual pay may include your specific job related knowledge, skills, experience, and geographic location. The salary compensation for this role is £50,000 to £80,000. Individual pay within the compensation range for this business unit specific role is determined based on a variety of factors including experience, scope of the role, capabilities to perform the role, education and training, as well as business and company performance.
Ookla is an Equal Opportunity Employer. At Ookla Diversity, Equity, and Inclusion (DEI) has always been about fairness, equal opportunity, and belonging. DEI enables us to attract and retain the best talent, regardless of background or circumstances, while enabling our thousands of employees worldwide to thrive.
Skills Required
- 5 to 8 years of professional software engineering experience
- Strong proficiency in Python (FastAPI or Django)
- Proficient in React and Redux with experience building complex, data-heavy web applications
- Hands-on experience using AWS for building and scaling applications including Docker/Kubernetes
- Experience integrating third-party APIs and AI services into production applications
Ziff Davis Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Ziff Davis and has not been reviewed or approved by Ziff Davis.
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Healthcare Strength — Employer covers a substantial portion of medical costs and offers multiple plan choices with supportive features such as HSA options, low-deductible access points, and telemedicine. Wellbeing resources and mental health support further reinforce the overall healthcare offering.
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Parental & Family Support — Generous paid parental leave for birth and non-birth parents is complemented by family‑planning support and practical assistance like medical travel and related logistics. Additional caregiving leave and adoption assistance are also described.
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Leave & Time Off Breadth — Flexible Time Off in several regions and dedicated Volunteer Time Off indicate a broad approach to rest and community engagement. Company holidays and paid sick time add to overall time‑off flexibility.
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The Company
What We Do
Ziff Davis (Nasdaq: ZD) is a vertically focused digital media and internet company whose portfolio includes leading brands in technology, entertainment, shopping, health, cybersecurity, and martech.
