Realm-X serves as both a foundation for internal teams to build and scale AI-powered products , and a core layer delivering intelligent, high-impact experiences directly to our customers . At its ...
Quick apply
Realm-X serves as both a foundation for internal teams to build and scale AI-powered products , and a core layer delivering intelligent, high-impact experiences directly to our customers . At its ...
Realm-X serves as both a foundation for internal teams to build and scale AI-powered products , and a core layer delivering intelligent, high-impact experiences directly to our customers . At its ...
Quick apply
Realm-X serves as both a foundation for internal teams to build and scale AI-powered products , and a core layer delivering intelligent, high-impact experiences directly to our customers . At its ...
Realm-X serves as both a foundation for internal teams to build and scale AI-powered products, and a core layer delivering intelligent, high-impact experiences directly to our customers. At its core ...
Realm-X serves as both a foundation for internal teams to build and scale AI-powered products, and a core layer delivering intelligent, high-impact experiences directly to our customers. At its core ...
Pipe Layer
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Network Support Engineer
Diamond Bar, CA · On-site
Configure, provision, and maintain top-of-rack switches, core Layer 3 switches/routers, and SDN services * Monitor network infrastructure, respond to alerts, and ensure issues are addressed within ...
Quick apply
Network Support Engineer
Diamond Bar, CA · On-site
Configure, provision, and maintain top-of-rack switches, core Layer 3 switches/routers, and SDN services * Monitor network infrastructure, respond to alerts, and ensure issues are addressed within ...
Network Support Engineer
Diamond Bar, CA · On-site
Configure, provision, and maintain top-of-rack switches, core Layer 3 switches/routers, and SDN services * Monitor network infrastructure, respond to alerts, and ensure issues are addressed within ...
Network Support Engineer
Diamond Bar, CA · On-site
Configure, provision, and maintain top-of-rack switches, core Layer 3 switches/routers, and SDN services * Monitor network infrastructure, respond to alerts, and ensure issues are addressed within ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Staff Machine Learning Engineer
Santa Barbara, CA · On-site +1
Realm-X serves as both a foundation for internal teams to build and scale AI-powered products, and a core layer delivering intelligent, high-impact experiences directly to our customers. At its core ...
Staff Machine Learning Engineer
Santa Barbara, CA · On-site +1
Realm-X serves as both a foundation for internal teams to build and scale AI-powered products, and a core layer delivering intelligent, high-impact experiences directly to our customers. At its core ...
Configure, provision, and maintain top-of-rack switches, core Layer 3 switches/routers, and SDN services * Monitor network infrastructure, respond to alerts, and ensure issues are addressed within ...
Configure, provision, and maintain top-of-rack switches, core Layer 3 switches/routers, and SDN services * Monitor network infrastructure, respond to alerts, and ensure issues are addressed within ...
5G gNB Layer 2 and Layer 3 Developer
Coppell, TX · On-site
$105K - $195K/yr
Integrate and test L2/L3 software with the physical layer (PHY) and core network (5GC) to ensure seamless operations. Qualifications You have: * 3+ years of experience in 5G NR or LTE RAN development ...
5G gNB Layer 2 and Layer 3 Developer
Coppell, TX · On-site
$105K - $195K/yr
Integrate and test L2/L3 software with the physical layer (PHY) and core network (5GC) to ensure seamless operations. Qualifications You have: * 3+ years of experience in 5G NR or LTE RAN development ...
Network Support Engineer
Diamond Bar, CA · On-site
Configure, provision, and maintain top-of-rack switches, core Layer 3 switches/routers, and SDN services * Monitor network infrastructure, respond to alerts, and ensure issues are addressed within ...
Quick apply
Network Support Engineer
Diamond Bar, CA · On-site
Configure, provision, and maintain top-of-rack switches, core Layer 3 switches/routers, and SDN services * Monitor network infrastructure, respond to alerts, and ensure issues are addressed within ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Pipe Layer
Hamlet, NC · On-site
$15.75 - $20.75/hr
Our core values guide our strategy, performance, and culture. We believe in maintaining an ... Job Summary The Pipe Layer is responsible for assessing the ground conditions, digging trenches ...
Core Layer information
What is the difference between Core Layer vs Distribution Layer?
| Aspect | Core Layer | Distribution Layer |
|---|---|---|
| Primary Function | High-speed data transfer and backbone connectivity | Policy enforcement, routing, and network segmentation |
| Work Environment | Data centers, large enterprise networks | Campus networks, enterprise distribution points |
| Required Credentials | Networking certifications (e.g., CCNA, CCNP) | Networking certifications (e.g., CCNA, CCNP) |
| Usage in Industry | Designs for high-performance, scalable networks | Interconnecting access layers and managing traffic |
The Core Layer focuses on fast, reliable backbone connectivity within large networks, while the Distribution Layer manages traffic policies and network segmentation. Both roles require similar certifications and are essential in enterprise network architecture, but they serve different functions within the network hierarchy.
What is a core layer?
Core layer jobs in networking refer to roles focused on designing, maintaining, and managing the core layer of a network infrastructure. The core layer is responsible for high-speed, reliable data transmission between different regions of a network and often acts as the backbone connecting various distribution layers. Professionals in these roles ensure network scalability, redundancy, and optimal performance, handling tasks like configuring core routers and implementing advanced routing protocols. These jobs are essential in large enterprises or service provider environments where robust network performance is critical.
What are common challenges faced by professionals working on the core layer of software systems?
Professionals working on the Core Layer often encounter challenges related to system scalability, stability, and integration with other layers. They must ensure that the foundational components are robust and can support high loads while maintaining performance and security. Collaboration with other teams, such as application development and infrastructure, is essential to align architectural decisions and resolve potential bottlenecks. Staying updated with advances in core technologies and best practices is also crucial for long-term success in this role.
What skills and qualifications are needed to thrive as a core layer engineer?
To thrive as a Core Layer Engineer, you need a strong background in computer science, networking protocols, and system architecture, often supported by a relevant degree or certifications such as Cisco CCIE or Juniper JNCIE. Familiarity with routing and switching equipment, network simulation tools, and network operating systems (e.g., IOS, Junos) is crucial. Analytical thinking, problem-solving abilities, and effective communication help engineers collaborate and resolve complex issues efficiently. These skills are essential to ensure reliable, scalable, and secure network infrastructure in enterprise and service provider environments.
More about Core Layer jobs
What job categories do people searching Core Layer jobs look for? The top searched job categories for Core Layer jobs are:
AppFolio rating
7.2
Based on 8 frontline employees who took The Breakroom Quiz
183rd of 243 rated software companies
Job description
Hi, We're AppFolio
We're innovators, changemakers, and collaborators. We're more than just a software company — we're building the AI-native platform where the real estate industry comes to do business. We're transforming Property Management; how property managers operate, how residents live, and how intelligence flows across an entire industry.
Realm-X is AppFolio's AI-native platform powering this transformation. It enables a new generation of intelligent capabilities across our products, including Realm-X Assistant (copilot), Flows (AI Agentic workflows) and Performers (autonomous AI Agents). Realm-X serves as both a foundation for internal teams to build and scale AI-powered products, and a core layer delivering intelligent, high-impact experiences directly to our customers.
At its core, Realm-X is built on a structured domain ontology and a set of shared business primitives—such as transactions, actions, reports, metrics, and skills—that enable AI systems to deeply understand and operate across the full context of property management workflows. This foundation allows us to build context-aware, action-oriented AI systems that go beyond simple assistance to power real automation and decision-making.
Who We Are Looking For
We're hiring a Staff Machine Learning Engineer to help move forward the ML platform that every AI initiative at AppFolio depends on — training, fine-tuning, inference, RAG, evaluation, and cost. You'll keep our AI cloud always-on, observable, and economical, while staying close enough to applications to influence model and agent design.
This role works at the intersection of ML infrastructure, applied AI, and cost discipline. You'll partner closely with our Voice & Agents and Research ML engineers to harden their prototypes into production systems, and help move forward the platform layer that lets Realm-X scale across AppFolio's entire customer base.
Your Impact
- ML Platform: Design and operate AppFolio's ML infrastructure on AWS — ECS, SageMaker, GPU fleets, model serving, autoscaling, and cost controls.
- Drive AI Cost Discipline: Optimize cost across all AI applications — provider routing, caching, batch vs. real-time, model size selection, and inference economics.
- Multi-Provider Reliability: Maintain reliable, multi-provider LLM access across Google, OpenAI, and Anthropic with sensible fallbacks and abstractions.
- Training & Fine-Tuning Stack: Build the training and fine-tuning stack for Small Language Models, including data pipelines, GPU orchestration, and evaluation.
- Productionize Research: Partner with Voice & Agents and Research ML engineers to harden their prototypes into production systems with SLOs, on-call rotations, and observability.
- AI Safety & Guardrails: Operate AppFolio's AI safety and authorization layer — guardrails on AWS, scoped tool permissions, and human-in-the-loop gates for autonomous agent actions.
Qualifications
- Systems thinker: You think in terms of platforms and long-term leverage, not just features.
- Production builder: You've built and scaled ML infrastructure in production with meaningful business impact.
- Ambiguity: You operate effectively in high ambiguity, turning unclear infra problems into clear direction.
- Owner-operator: You take ownership with a founder/owner-operator mindset, act with urgency, and focus on outcomes.
- Pace: You have a strong desire to move fast and deliver impact, while maintaining sound engineering judgment.
- Collaboration: You are humble, collaborative, and low-ego, and you elevate those around you.
- Sustainability: You value work-life balance as a foundation for sustained high performance.
- Reliability mindset: You treat ML infra like any other production system — SLOs, on-call, observability, postmortems.
Must Have
- ML infra at scale: Has built and operated production ML infrastructure on AWS — ECS, SageMaker, GPUs, autoscaling, and cost controls.
- Inference platforms: Production experience with model serving for both LLMs and custom models; understands quantization, batching, and routing.
- Provider breadth: Direct experience integrating with Google (Vertex / Gemini), OpenAI, and Anthropic APIs in production.
- Training capability: Has trained or fine-tuned language models end-to-end; comfortable with deep learning, evaluation, and inference.
- Cloud-native engineering: Strong Python, Docker, dependency management, and CI/CD for AI workloads.
- RAG & agents: Working knowledge of LangChain / LangGraph and modern RAG patterns over structured and unstructured data.
- Cost optimization: Demonstrated experience reducing unit cost of AI workloads without regressing quality or latency.
- AI safety & authorization: Hands-on experience operating AI guardrails, scoped tool permissions, and authorization layers for production AI systems.
Nice to Have
- Experience training Small Language Models for production use.
- GPU performance tuning (vLLM, TensorRT, Triton, or similar).
- Prior Staff-level role at a company with a significant AI infra footprint.
- Experience with ontology-driven systems or knowledge graphs supporting AI applications.
- Contributions to open-source ML infrastructure or LLM tooling.
Location
Find out more about our locations by visiting our site.
Compensation & Benefits
The compensation that we reasonably expect to pay for this role is: $200,000 - 250,000 base pay. The actual compensation for this role will be determined by a variety of factors, including but not limited to the candidate’s skills, education, experience, and internal equity.
Please note that compensation is just one aspect of a comprehensive Total Rewards package. The compensation range listed here does not include additional benefits or any discretionary bonuses you may be eligible for based on your role and/or employment type.
Regular full-time employees are eligible for benefits - see here.
Regular full-time employees are eligible for benefits - see here.
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