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UCentric
6 hours ago

Principal Software Engineer (Communications SaaS)

New APACPrincipal
Australia
Melbourne, Melbourne Region

Senior/principal engineer building a communications SaaS platform for the Australian SME market, unifying phone, SMS, email and web interactions around a single customer. Melbourne preferred but Australia-wide considered; $160k-$180k plus super.

160K – 180K AUD
Pearson
8 hours ago

Principal Software Engineer

New North AmericaFull-timePrincipal
United States

Hands-on principal engineer at Pearson's Content Platform group, leading the modernization of Pearson's content platform into shared services: designing and executing large content/data migrations, building shared APIs (media, search, rendering, AI content services), and mentoring senior engineers. Core stack: Java/Spring Boot, Node.js/TypeScript, React, MongoDB, Kafka on AWS.

AI API API Gateway AWS AWS Bedrock +34 skills
150K – 170K $
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Anduril Industries
40 views 10 hours ago

Principal Systems Engineer, Air Vehicle Software

Open 95d North AmericaFull-timePrincipal Salary + equity No extra questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.Ireland permit employer — This employer was issued Irish employment permits this year or in the two years before, per the Department of Enterprise, Tourism and Employment. The permits belong to the employer and are not a commitment to sponsor this role.
United States
Costa Mesa, California

Principal Systems Engineer to define air-vehicle software requirements, model system architecture, and support certification for a Group 5 autonomous aircraft using model-based systems engineering.

AI Cloud Computer Vision Networking Program Management +2 skills
220K – 292K $
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Anduril Industries
47 views 10 hours ago

Principal Mission Systems Engineer, Air Dominance & Strike, Active Clearance

Open 75d North AmericaFull-timePrincipal Salary + equity 9 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.Ireland permit employer — This employer was issued Irish employment permits this year or in the two years before, per the Department of Enterprise, Tourism and Employment. The permits belong to the employer and are not a commitment to sponsor this role.
United States
Costa Mesa, California

Principal-level mission systems engineer at defense tech company Anduril who selects, architects, and validates mission payloads (communications, sensing, effectors) for autonomous air systems — from physics-based modeling and trade studies through subcontractor management and vehicle integration. Requires an active Top Secret clearance, RF/IR expertise, and 15+ years in a relevant engineering fie

AI Ansys Computer Vision C++ LiDAR +4 skills
220K – 290K $
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Placements24
11 hours ago

Principal Software Engineer

New AfricaPrincipal Salary + equity
South Africa
Randburg

About the Role Our client, a leader in enterprise software solutions, is seeking an experienced and visionary Principal Software Engineer to join their prestigious team in Randburg, Gauteng . This senior role requires…

Agile AWS Azure CI/CD Cloud +12 skills
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Roblox Backed by a16zBacked by GreylockBacked by Index Ventures
69 views 12 hours ago

Principal Software Engineer

Open 132d North AmericaFull-timePrincipal Salary + equity 5 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
San Mateo, CA

Principal engineer leading the Safety Foundation team at Roblox, building scalable backend infrastructure and AI-first safety workflows to protect 100M+ daily users.

Agentic AI AI Automation Backbone.js Cassandra +8 skills
295K – 345K $
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Roblox Backed by a16zBacked by GreylockBacked by Index Ventures
64 views 12 hours ago

Principal Software Engineer - Content Lifecycle

Open 143d North AmericaFull-timePrincipal Salary + equity 5 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
San Mateo, CA

Principal Engineer at Roblox designing and building core workflows in C++ for the game engine and Studio, enabling creators and AI agents to collaborate on 3D content at scale.

Agentic AI AI Automation C++ Game Development +1 skills
295K – 345K $
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Roblox Backed by a16zBacked by GreylockBacked by Index Ventures
63 views 12 hours ago

Principal Software Engineer - Roblox Database

Open 119d North AmericaFull-timePrincipal Salary + equity 5 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
San Mateo, CA

Principal engineer on Roblox’s next-gen database platform, designing indexing, replication, and scaling features to keep millions of concurrent users fast and reliable.

Aurora Automation CI/CD C++ Kubernetes +4 skills
294K – 343K $
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Roblox Backed by a16zBacked by GreylockBacked by Index Ventures
70 views 12 hours ago

Principal Software Engineer

Open 143d North AmericaFull-timePrincipal Salary + equity 5 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
San Mateo, CA

Principal engineer designing core C++ data structures and frameworks for Roblox’s game engine, ensuring high performance across all supported devices.

Automation Backbone.js C++ Networking Test Automation
295K – 345K $
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Roblox Backed by a16zBacked by GreylockBacked by Index Ventures
83 views 12 hours ago

Senior/Principal Software Engineer - Creator Data

Open 143d North AmericaFull-timePrincipal Salary + equity 5 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
San Mateo, CA

Principal engineer leading distributed storage systems (Data Stores, Memory Stores) and cloud services for Roblox creators, ensuring 100% uptime and building observability dashboards.

Agile AI Analytics API AWS +20 skills
345K – 399K $
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Roblox Backed by a16zBacked by GreylockBacked by Index Ventures
65 views 12 hours ago

Principal Software Engineer - Roblox Economy Platform

Open 143d North AmericaFull-timePrincipal Salary + equity 5 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
San Mateo, CA

Principal engineer leading backend systems that power Roblox’s virtual currency (Robux), enabling creators to monetize games and process billions of transactions.

Distributed Systems Fintech
294K – 343K $
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Roblox Backed by a16zBacked by GreylockBacked by Index Ventures
61 views 12 hours ago

Principal Software Engineer, Engineering Acceleration

Open 143d North AmericaFull-timePrincipal Salary + equity 5 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
San Mateo, CA

Principal engineer defining the next decade of Roblox’s developer platform, scaling source control, CI, and AI-powered tooling for 2,000+ engineers.

AI Artifactory AWS Cloud C# +10 skills
295K – 345K $
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Roblox Backed by a16zBacked by GreylockBacked by Index Ventures
65 views 12 hours ago

Principal Software Engineer - Compute (Kubernetes)

Open 130d North AmericaFull-timePrincipal Salary + equity 5 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
San Mateo, CA

Lead the architecture and evolution of Roblox’s Kubernetes platform, optimizing control plane performance and security for millions of concurrent requests across global infrastructure.

API Automation Cloud Cloud Native Distributed Systems +4 skills
345K – 399K $
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Roblox Backed by a16zBacked by GreylockBacked by Index Ventures
107 views 12 hours ago

Principal Software Engineer, Metrics Platform

Open 129d North AmericaFull-timePrincipal Salary + equity 5 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
San Mateo, CA

Lead the architecture and long-term vision for Roblox’s petabyte-scale data infrastructure, including Kafka, Flink, Spark, and Trino, while integrating AI-driven autonomous interfaces.

Agentic AI AI Analytics API Data Engineering +14 skills
295K – 345K $
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Roblox Backed by a16zBacked by GreylockBacked by Index Ventures
68 views 12 hours ago

Principal Software Engineer, Data Tooling

Open 67d North AmericaFull-timePrincipal Salary + equity 6 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
San Mateo, CA

Engineering Manager leading Roblox's Data Tooling team, which builds shared frameworks for data quality, lineage, metadata, observability, and self-service used by data engineering, science, ML, and product teams. You'll own the roadmap, coach engineers, and set technical direction, working hybrid from San Mateo (onsite Tue–Thu).

Agentic AI AI Data Engineering Data Quality Data Science +2 skills
295K – 345K $
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Roblox Backed by a16zBacked by GreylockBacked by Index Ventures
59 views 12 hours ago

Principal Software Engineer- Account Authentication

Open 93d North AmericaFull-timePrincipal Salary + equity 5 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
San Mateo, CA

Build and own full-stack account authentication systems that securely verify millions of users daily across web, mobile, and consoles.

AI Android Authentication Automation C++ +4 skills
295K – 345K $
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Roblox Backed by a16zBacked by GreylockBacked by Index Ventures
72 views 12 hours ago

Principal Software Engineer - Content Understanding

Open 69d North AmericaFull-timePrincipal Salary + equity 6 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
San Mateo, CA

Develops AI-driven full-stack solutions for Roblox’s Content Understanding Platform, processing billions of assets (3D models, audio, text, video) to enable search, moderation, and generative AI features.

AI Angular API Cloud Computer Vision +10 skills
295K – 345K $
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Roblox Backed by a16zBacked by GreylockBacked by Index Ventures
62 views 12 hours ago

Principal Software Engineer, Orchestration

New North AmericaFull-timePrincipal Salary + equity 7 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
San Mateo, CA

Principal-level technical lead for Roblox's data platform orchestration: owns Apache Airflow and its Kubernetes (EKS) infrastructure that schedules and runs 8,000+ daily DAGs, mostly Spark jobs. Day to day: set multi-year architecture, scale and harden the scheduler, build internal platform tooling, drive observability/SLAs, and mentor engineers.

Airflow Analytics API Argo CD Automation +20 skills
295K – 345K $
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Roblox Backed by a16zBacked by GreylockBacked by Index Ventures
48 views 12 hours ago

Principal Software Engineer, Creator Collaboration

Open 41d North AmericaFull-timePrincipal Salary + equity 5 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
San Mateo, CA

Principal engineer on the Collaboration team leading the architecture and design of Roblox Studio and game-engine workflows that let creators and AI agents build, share, and manage reusable content at scale. Day to day: shipping complex C++ features end-to-end, setting technical direction, and mentoring engineers.

Agentic AI AI Automation Cloud C++ +6 skills
295K – 345K $
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Roblox Backed by a16zBacked by GreylockBacked by Index Ventures
12 hours ago

Principal Software Engineer, WebRTC

New North AmericaFull-timePrincipal Salary + equity 8 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
San Mateo, CA

Principal engineer on Roblox's Audio-Video-Communication team, building a real-time communication platform from the ground up — voice chat, 3D audio, and large-scale broadcast — to serve billions of users across mobile, console, and other devices. Core stack is C++ with emphasis on distributed systems and low-level performance optimization.

Assembly C++ Design Patterns
295K – 345K $
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