Root Managed Services, LLC | Network Engineers | Dallas, TX | https://rootmanagedservices.com

Hey HN! I'm Ian, one of the founders of Root Managed Services.

Root Managed Services is a managed IT services provider focused on helping businesses keep their infrastructure stable, secure, and running day to day.

We're hiring a network engineer who is excited to help with day-to-day NOC operations, client infrastructure support, alert triage, troubleshooting, and keeping systems online. This is a hands-on role for someone who enjoys digging into network issues, server alerts, firewalls, tickets, documentation, and the operational details that keep businesses running.

Root Managed Services works with small and growing businesses that need reliable IT operations without building a full internal team. That means our work spans networking, servers, workstations, monitoring, ticketing, backups, security, and client communications. We’re looking for someone who can help us improve our NOC process, respond to issues quickly, and build better operational workflows as we grow.

Stack / tools: Windows Server, Linux, firewalls, switches, VPNs, RMM tools, ticketing systems, monitoring/alerting, Microsoft 365, Active Directory, DNS, DHCP, VLANs, TCP/IP.

Applying: email me and let me know why you want to work with us.

Stellar Science | Hybrid (USA) Albuquerque NM, Washington DC (Tysons VA), Dayton OH | Full time, interns/co-ops | U.S. citizenship required | https://www.stellarscience.com

Company: We're a small scientific software development company that develops custom scientific and engineering analysis applications in domains including: space situational awareness (monitoring the locations, health and status of on-orbit satellites), image simulation, high power microwave systems, modeling and simulation, laser systems modeling, AI/ML including physics-informed neural networks (PINN), human body thermoregulation, computer vision and image processing, high performance computing (HPC), computer aided design (CAD), and more. All exciting applications and no CRUD. We emphasize high quality code and lightweight processes that free software engineers to be productive.

Experience: Except for interns, we currently require a Bachelors degree in physics, engineering, math, computer science, or a related field. Masters or PhD is a plus. (Roughly 25% of our staff have PhDs.)

Technologies: Lots of C++23, Qt 6.9, CMake, git, OpenGL, CUDA, Boost, Jenkins. Windows and Linux, msvc/gcc/clang/clangcl. AI/ML and analysis projects use Python and C++. Web projects use Java and Typescript/React. We're a bit behind the curve on developer AI adoption, and we're okay with that.

Apply online: at https://www.stellarscience.com/careers/.

Psiphon | iOS / Flutter Developer | Toronto (Hybrid) | Full-time

Psiphon is a VPN app used by millions of people to access the open internet in regions where it's restricted. Small team, software that matters.

We're building the next-gen client app in Flutter (iOS, Android, macOS, Windows) and need someone who can work across both iOS native and Flutter. Split is roughly 65% Flutter, 35% iOS native (Swift, StoreKit, entitlements, network extensions). You'll have mentorship from a senior iOS specialist for the deeper networking work.

Day to day: Feature development in Flutter, iOS platform integration (subscriptions, permissions, App Store), and occasionally going deep into network extensions and packet tunnel providers. Small team (~3-4 core devs), high ownership, low ceremony.

Looking for: Strong Swift experience beyond just UIKit/SwiftUI app dev, comfort with the iOS ecosystem (App Store process, provisioning, StoreKit), and willingness to context-switch between Swift and Dart in the same day. Flutter experience is a strong plus but not required if you pick up frameworks quickly.

Contact: hr@psiphon.ca

DuckDuckGo | Multiple Roles | Remote | Full-time | $178,500 - $243,800 USD + equity

We are looking for candidates that are excited to join us on a mission to raise the standard of trust online. All of our roles are fully-remote, except where specific locations are noted.

Most of the software engineering positions have been repeating here for years because we've been continually hiring for them, scaling our whole team to now over 300 people—many of those hires have come through Hacker News. We've been improving our hiring process over time, and we know some good candidates may have fallen through the cracks. Some people who tried in the past have had success going through it again, and we still pay for hiring projects.

Senior Web Security Engineer, Browser Platform = $178,500 USD + equity https://jobs.ashbyhq.com/duck-duck-go/a447e823-fd8f-438f-909...

Senior Backend Engineer - $178,500 USD + equity https://jobs.ashbyhq.com/duck-duck-go/53022b02-da3d-4fda-827...

Senior Software Engineer - Windows Desktop App - $178,500 USD + equity https://jobs.ashbyhq.com/duck-duck-go/47e569c6-f995-4955-a89...

Senior Data Scientist - $178,500 USD + equity https://jobs.ashbyhq.com/duck-duck-go/a447e823-fd8f-438f-909...

Director, Data Science - $243,800 USD + equity https://jobs.ashbyhq.com/duck-duck-go/0269aeaa-8d8f-4c8d-b78...

Director, User Insights - $243,800 USD + equity https://jobs.ashbyhq.com/duck-duck-go/4c21670f-9057-42a5-a88...

Director, Business Development (Remote within USA) - $243,800 USD + equity https://jobs.ashbyhq.com/duck-duck-go/30f53ccd-9714-4bee-9d5...

and MORE: https://duckduckgo.com/careers

Emergences Labs (emergences.ai) | AI / Systems Engineer — NeoHuman | REMOTE (US) | Full-time | $120K-$150K + equity | Visa sponsorship available

We're a small, research-driven, VC-backed team building NeoHuman: a desktop-first system that observes how people actually use AI tools, files, and workflows during real tasks, and turns those sessions into reliable evaluation evidence. We care about the process, not just the final answer — what someone typed, what they copied, what they verified, how they moved across apps.

We've published the AgentIF-OneDay benchmark. Now we're scaling the capture and evaluation infrastructure underneath it.

You'd own: - Cross-platform desktop capture across macOS + Windows (AX/UIA trees, OCR, clipboard, keyboard/mouse boundaries, file interactions) - Trace fusion — turning noisy low-level signals into clean human-readable session timelines - The evaluation evidence pipeline (data model, ingestion, exports) - LLM normalization that summarizes traces without hallucinating or hiding evidence quality - Privacy/consent/proctoring safety for enterprise customers

We want an AI-native engineer: - 3+ years shipping production TypeScript + Node.js - Built or shipped Electron + native helpers - Strong PostgreSQL (schema design, indexing, data quality) - Comfortable with OS APIs, permissions, background processes - Hands-on LLM API experience (structured output, evaluation, hallucination control) - Uses Claude Code, Cursor, or similar as a daily working medium — not a side experiment - Bonus: macOS AX / ScreenCaptureKit / CGEventTap, Windows UIA, or you've studied/built things like Screenpipe, OpenAdapt, Rewind, OpenChronicle

Stack: TypeScript · Node.js · Electron · native macOS/Windows · Next.js 15 · React 19 · Postgres + Supabase · OCR · Accessibility APIs · OpenAI / Anthropic / Gemini · Vercel · GitHub Actions

Why us: Hard, unusual problem at the boundary of OS internals, multimodal capture, and AI evaluation. Small team, technical founders who code daily, real ownership of the capture stack. We hire on demonstrated capability, not credentials.

Apply: email jack@emergences.ai with your resume and a brief note about a system you've built — desktop software, AI infra, data pipelines, evaluation, or low-level debugging. Subject: "Your Name — AI / Systems Engineer". Please mention HN in the email.

Full JD: https://emergences.ai/careers/ai-engineer