Senior Platform Engineer

Responsibilities

Rapidly audit and refactor existing internal tools and services to strictly comply with 12-factor application principles — configuration via environment, stateless processes, explicit dependency declarations, disposability, and dev/prod parity

Own end-to-end delivery of modernized services

back-end APIs (Go/Python) paired with clean, functional front-end interfaces (React or Vue) that surface platform data and controls to internal users

Decompose monolithic or ad-hoc scripts into properly structured, independently deployable services with clearly defined interfaces

Build and maintain internal web UIs using modern front-end frameworks (React or Vue) — dashboards, tooling consoles, and operational interfaces that teams actually want to use

Design and develop robust REST/gRPC back-end APIs in Go and Python following clean architecture patterns

Ensure front-end and back-end components are instrumented end-to-end with traces, metrics, and structured logs from day one

Own the platform observability stack

design, implement, and continuously improve our Grafana, Prometheus, and Loki deployment for all internal services

Define and enforce instrumentation standards — every new or refactored service must ship with meaningful RED metrics, structured JSON logs forwarded to Loki, and distributed traces

Build and maintain Grafana dashboards and alerting rules that provide actionable signal for on-call engineers; define and manage SLIs/SLOs across critical platform services

Implement Prometheus exporters for custom internal services and integrate alerting with PagerDuty or equivalent

Drive log aggregation strategy with Loki — label taxonomy, retention policies, and LogQL query libraries for common operational queries

Design, develop, and support robust APIs and automation services from scratch using Go and Python

Conduct architecture reviews and enforce design standards across the platform engineering team

Drive the modernization of legacy platform components with a bias toward simplicity and operational transparency

Lead the refactoring of existing deployment pipelines to be fully Kubernetes-native

Define and implement disciplined software release cycles using GitLab CI/CD and ArgoCD for GitOps-driven deployments

Establish automated testing gates (unit, integration, contract) as hard requirements in the pipeline

Mentor mid-tier developers, establish coding standards, enforce peer reviews, and reduce technical debt

Improve engineering maturity across the team — instill a culture of instrumentation-first development where observability is never an afterthought

Maintain and overhaul technical documentation; make it easy for new engineers to onboard and contribute

Drive enterprise-grade infrastructure automation and orchestration using Ansible, AWX, and Terraform

Oversee the secure and highly available architecture of core lifecycle services such as Harbor and GitLab

Qualification

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Represents the skills you have

Find out how your skills align with this job's requirements. If anything seems off, you can easily click on the tags to select or unselect skills to reflect your actual expertise.

12-Factor Application Design

checkReact

checkVue

checkPython

checkGo

Grafana

Prometheus

Loki

checkPromQL

LogQL

Prometheus Exporters

checkDistributed Systems

Enterprise APIs

checkKubernetes

CKA Certification

CKAD Certification

checkOn-Premise Kubernetes

Rancher

checkOpenStack

checkPrivate Cloud

Infrastructure Networking

Ansible

AWX

checkTerraform

Harbor

checkGitLab

checkGitLab CI/CD

ArgoCD

checkAutomated Testing

SDLC Practices

Required

+ 8+ years of software engineering with proven technical leadership and architectural design experience

+ Full-Stack Development

Strong front-end skills (React or Vue) alongside deep back-end experience — you are comfortable owning the full request lifecycle from UI click to database

+ Observability Expertise

Deep, hands-on expertise with Grafana, Prometheus, and Loki — not just deploying them, but designing dashboards, writing PromQL/LogQL, building exporters, and enforcing instrumentation standards across a team

+ 12-Factor Mastery

Demonstrated experience auditing and refactoring real applications to be 12-factor compliant in a production environment

+ Programming

Deep expertise in Python and Go (Golang) for building distributed systems and enterprise APIs

+ Kubernetes Certification

CKA or CKAD strictly required (CNCF). Hands-on experience with on-premise clusters, preferably Rancher

+ Cloud & Infrastructure

Strong experience with OpenStack, private cloud environments, and foundational infrastructure networking

+ Automation & Tooling

Extensive experience with Ansible, AWX/Tower, Harbor, and GitLab

+ Modern Delivery

Proven expertise in SDLC practices, code refactoring, automated testing, and GitOps (ArgoCD)

Preferred

Experience designing and shipping internal developer portals or operational tooling used by platform and SRE teams

Hands-on experience with distributed tracing (Jaeger, Tempo, or OpenTelemetry) to complement the Grafana/Prometheus/Loki stack

Deep practical experience implementing SRE principles at large-scale enterprise

Familiarity with Bare Metal as a Service (BMaaS) provisioning and integration

Experience navigating ITIL change management processes within highly automated CI/CD frameworks

Experience establishing engineering standards and driving a culture of accountability and continuous improvement

Benefits

Annual performance bonus

Stock

Other applicable incentive compensation plans

Health, dental, and vision coverage, beginning on the first day of employment. Five9 covers 100% of the employee portion of the health, dental and vision coverage and shares a high portion of the dependent cost.

Short & Long-Term Disability

Basic Life Insurance

401k saving plan with employer matching

Access to an innovative mental health support platform that offers personalized care and resources in areas such as: therapy, coaching and self-guided mindfulness exercises for all covered employees and their covered dependents.

Generous employee stock purchase plan

Paid Time Off

Company paid holidays

Paid volunteer hours

12 weeks paid parental leave