Circles · 23 hours ago
Principle Software Engineer , Backend
Lake County, IN
Full-time
Hybrid
Lead/StaffCircles is a global technology company reimagining the telco industry with its innovative SaaS platform. They are seeking a Principal Software Engineer for the Backend team who will serve as a technical visionary and people leader, responsible for delivering the technical roadmap and scaling both systems and engineering talent in their domain.
Telecom & CommunicationsAppsMarketingDigital MarketingMobileTelecommunications
Responsibilities
Define, communicate, and drive the medium-to-long-term technical roadmap and architectural evolution for your core domain
Serve as the highest technical authority for your domain
Dive into the most complex and ambiguous production issues or architectural roadblocks across the organization
Maintain expert-level proficiency in Java/Spring Boot and distributed patterns
Directly manage, mentor, and coach a dedicated team of Software Engineers (Junior to Staff)
Own the hiring pipeline for your team
Foster a culture of technical excellence, continuous learning, and accountability
Be fully accountable for the team's delivery
Instill a mindset of extreme operational ownership
Ensure services are adequately monitored, SLOs are met, and your team effectively handles incident response
Influence technical decisions up to the Director level and laterally across peer engineering managers and other Principal engineers
Qualification
Required
Strategic proficiency in one or more highly performant languages (e.g., Java, Go/Kotlin) for use in critical, low-latency services or cross-domain initiatives
Global Scale Resilience: Expert knowledge in designing, implementing, and defending systems that meet five-nines (99.999%) availability and operate across multi-region/multi-cloud deployments. Expert understanding of data consistency models (e.g., Eventual Consistency) and geo-distributed databases
Advanced Cloud Engineering (AWS/GCP focus): Expertise in infrastructure-as-code (e.g., Terraform, CloudFormation) and modern container orchestration (Kubernetes). Proven ability to design and govern CI/CD pipelines that achieve high deployment frequency and low failure rates
Data Strategy & Data Flow Governance: Mastery of various database technologies, including advanced indexing and replication strategies. Expertise in real-time data streaming architectures (e.g., Kafka, Flink) for high-throughput, low-latency processing and analysis
Proactive Security & Observability: Expert-level knowledge of security best practices (e.g., OWASP Top 10) applied at the architectural layer. You must define the standards for Observability (logging, tracing via OpenTelemetry/Jaeger, and custom metrics) for your entire domain
Performance Engineering: Proven history of identifying and eliminating complex performance bottlenecks (code, database, network) in high-volume production environments. Experience with advanced profiling and benchmarking tools
Preferred
Expert-level proficiency in Java/Spring Boot, especially for hands-on code fluency
Strategic proficiency in languages like Java, Go, or Kotlin
Expertise in AWS/GCP
Expertise in Kubernetes
Expertise in systems like Kafka
Mastery of various database technologies, including advanced indexing and replication strategies, NoSQL, SQL
Defining standards for Observability (logging, tracing via OpenTelemetry/Jaeger, and custom metrics)
Expert-level knowledge of security best practices (e.g., OWASP Top 10) at the architectural layer
Experience with advanced profiling and benchmarking tools (e.g., JProfiler)
Company
Circles
Founded in 2014, Circles is a global technology company reimagining the telco industry with its innovative SaaS platform, empowering telco operators worldwide to effortlessly launch innovative digital brands or refresh existing ones, accelerating their transformation into techcos.
Founded in 2014
501-1000 employees
Funding
Current Stage
Late StageTotal Funding
$50MKey Investors
Warburg PincusEDBI,Founders FundPeak XV Partners
2020-02-11Series Unknown
2019-06-06Series Unknown
2019-02-14Series C· $50M
Leadership Team
Abhishek Gupta
Co-Founder
A
Andeel Najam
Co-founder
Recent News
thefastmode.com
2025-12-01
2025-11-10
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