Principal Software Engineer
About the job
- A bachelor's degree in Computer Engineering or equivalent is required.
- At least 7 years of experience with Python, Go, Rust, C++, or similar technologies, and at least 10 years of general software development experience are required.
- Experience designing and building real-time and near-real-time systems, including machine learning inference, is required.
- Experience with distributed systems, databases, and messaging systems is required.
- Strong Linux knowledge and hands-on experience are required.
- Strong knowledge of software architecture principles and ability to contribute to architectural discussions are required.
- Ability to independently own solutions from design through implementation and iteration is required.
- Ability to work with ambiguity, shifting priorities, and speed-versus-quality and coverage trade-offs is required.
- Experience working in a leadership or senior engineering role is required.
- Written and verbal communication skills sufficient to engage technical and non-technical stakeholders are required.
- Curiosity and willingness to learn domain-specific telecommunications and radio-frequency technology are required.
- U.S. Person status is required due to contractual obligations.
- The candidate must be based in or willing to relocate to the Greater Seattle Area.
- Lead the rapid design, development, and iteration of software solutions and features.
- Work with system engineers to translate complex technical radio-frequency requirements into technically sound and feasible software solutions aligned with business objectives.
- Communicate complex software concepts effectively to internal and external stakeholders, including executive audiences.
- Provide technical guidance to software engineers, particularly on improving engineering processes, ensuring software quality and security standards, and ensuring system reliability and performance.
- Experience with technologies such as Kubernetes, Helm, Docker, Kafka, or NoSQL databases such as MongoDB and InfluxDB is preferred.
- Familiarity with data and machine-learning techniques and libraries such as NumPy and SciPy is preferred.
- Familiarity with modern front-end technologies and frameworks, including JavaScript, TypeScript, Angular, React, or Vue.js, is preferred.
- Experience working with modern deployment techniques and practices, such as continuous integration and continuous delivery pipelines and deployment automation, is preferred.
- Understanding of Radio Access Network concepts, including cells, sites, controllers, and topologies, is preferred.
About the company
Spectrum Effect provides a software platform that helps wireless carriers automatically analyze and mitigate RF interference in 5G NR, LTE, and UMTS networks. Its product, Spectrum-NET, uses machine learning to process data from across equipment and vendors to identify interference sources such as faulty radio gear, cross-border signals, and other RAN issues. The system guides operators on how to fix problems, improving metrics like user throughput and connection reliability while reducing churn. Spectrum Effect differentiates itself with an ML-driven, multi-vendor analytics approach backed by 30 patents and a track record of reducing analysis time (about 75%) and boosting capacity for operators such as Telkomsel. The company’s goal is to lower operators’ operating expenses and optimize capital expenditure by automating complex network analysis and interference mitigation across global mobile networks.
Company Size
51-200
Company Stage
Early VC
Total Funding
$15.3M
Headquarters
Kirkland, Washington
Founded
2015
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Simplify's Take
What believers are saying
- Smart Axiata reported 90% plus uplink gains before its 5G launch in March 2026.
- Spectrum Effect won Fierce Network's 2025 Analytics/Automation award, strengthening buyer credibility.
- The March 2025 Telkomsel deployment and 2026 expansion show repeatable land-and-expand momentum.
What critics are saying
- Spectrum Effect still reported only 11-50 employees in 2026, limiting global sales coverage.
- A 2026 $1.86 million seed round signals weak capital access versus telecom-software rivals.
- Customer concentration stays dangerous if Telkomsel or Smart Axiata delay renewals after 2026 pilots.
What makes Spectrum Effect unique
- Spectrum-NET spans 6 million-plus cells globally across multi-vendor LTE, UMTS, and 5G.
- Thirty-plus patents protect Spectrum Effect's RF interference detection, classification, and auto-mitigation stack.
- Smart Axiata and Telkomsel validate a specialized, operator-grade workflow competitors still lack.
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Benefits
- Stock Options
- Hybrid Work Options