Senior Engineer – Build AI Execution Browser
5 hours ago

Job description
OverviewWe're building Pixis Browser — an execution-first AI browser.
This is NOT a chat browser or summarization tool.
It is a structured task execution runtime embedded inside a Chromium wrapper.
Pixis:
- Takes a goal (e.g. "Cancel unused subscriptions")
- Generates a structured plan
- Executes actions inside the browser via a controlled extension
- Enforces approval gates for risky actions
- Verifies completion deterministically
- Logs everything for replay and regression testing
⸻
Architecture (High-Level)
The system has three main components:
Electron Chromium Shell
- Persistent user profile
- Sidebar UI
- Tab management
- IPC bridge
- Screenshot/highlight utilities
- Extracts page perception (DOM + accessibility tree)
- Generates stable element IDs
- Executes strict typed actions (click/type/select/scroll)
- Detects risk signals (captcha, login, checkout, payment)
- Orchestrator state machine
- Planner → PlanGraph
- Executor loop (Perceive → Decide → Validate → Act → Verify → Recover)
- Deterministic validators and verifiers
- Approval system
- Audit + replay harness
⸻
Scope of Work (Phase 1–2)
You will help build:
- Electron browser shell with persistent profile
MV3 extension with:
- DOM instrumentation
- Action execution layer
- Risk detection
- Strict action schema + validation layer
- Executor loop wiring
- Approval gating logic
- Trace logging system
- Replay harness foundation
This is a systems + architecture role.
⸻
Required Skills
- Strong TypeScript
- Electron (production experience preferred)
- Chrome Extensions (MV3)
- Playwright or browser automation experience
- State machine / orchestrator experience
- Experience building structured LLM systems (not just "chat UI")
- Comfortable designing JSON schemas and strict contracts
- Strong debugging + systems thinking
Bonus (Nice to Have)
- Experience building AI agents
- Deterministic validator/verifier design
- Replay harness / test harness experience
- Security-sensitive UI automation
- Background in browser internals or Chromium
Mandatory skills:
Python
Similar jobs
Cross-Browser Windows Tool to Set Default Search Engine
Only for registered members
We are looking for an experienced developer to build a single Windows-based installer or executable that can set or update the default search engine across major browsers. The solution must work across Windows operating systems only following security and browser policies. ...
1 month ago
Job summary · A proof of concept project focusing on execution rather than dashboards seeks an automation engineer to build browser-based workflows interacting with real websites. · Opening web pages · Completing dynamic forms · Uploading files · ...
4 weeks ago
JavaScript Browser Automation Developer Needed
Only for registered members
I am looking for an experienced JavaScript browser automation developer to help automate a specific workflow on a website by working directly with its backend network request. · ...
2 weeks ago
1-Hour Paid Validation Task – Python Playwright
Only for registered members
This is a paid 1-hour technical validation before a larger browser automation project. · Task: · Build a minimal Python + Playwright script that processes 5-10 test identifiers sequentially in a single browser session. · Single session · Sequential execution · ...
1 week ago
Backend Engineer to Build Internal Brand Protection App
Only for registered members
We are replacing manual Google Sheets workflows with an internal web application used by VAs to manage IP infringement cases. · ...
1 month ago
Contract duration of less than 1 month with 30 hours per week. · Add to Home Screen QA (P0) · ...
2 weeks ago
We build products that automate tedious browser tasks so real people can focus on higher-value work. · Manually run functional and regression tests against both staging and production environments on a regular cadence (we'll provide clear scripts). · Perform light exploratory tes ...
2 weeks ago
Automation Engineer Needed for Web Workflow Optimization
Only for registered members
We are looking for an experienced software developer to help design and implement a high-performance browser automation and testing solution. · Automating authenticated user flows in a web application we own or are permitted to test · Optimizing execution speed and reliability of ...
1 month ago
Browser Automation for Stable Device Validation
Only for registered members
We need a developer to build stable browser-based automation that runs locally macOS and processes up to IMEIs sequentially from text file The automation interacts with JavaScript-driven public device identification flow AT BYOD Primary requirement is stable repeatable output acr ...
1 week ago
We are looking for an experienced Full-Stack Developer to build a browser-based automation tool that aggregates quotes from multiple sources.The goal is to create a seamless user experience where a single form submission triggers a backend process to fetch real-time data from up ...
1 month ago
Create a Java Maven project with a Swing UI showing a web browser (friwi.jcefmaven), then compile it into GraalVM Native Image. · See screenshot, · a proof of concept to demonstrate that JCEF can be transformed into native executable on Windows. · Java. · ...
1 month ago
I am looking for an experienced AI automation engineer to properly install and configure Clawbot on my VPS (Ubuntu) with secure Tailscale networking, integrate LLM Based Browser-add a native browser for OpenClaw on the machine where it is running, and build a clean 4-agent AI arc ...
23 hours ago
n8n Automation Engineer for FFmpeg Video Pipeline
Only for registered members
We have an existing n8n automation running on n8n Cloud with FFmpeg-based video assembly on Hetzner. · ...
4 weeks ago
We are building an advanced AI-generated UGC video factory and are looking for an experienced automation engineer to help implement and stabilize the workflow. · ...
1 month ago
We are engaging a skilled senior QA engineer to perform a one-time quality assurance assessment of a web application.The goal is to validate core functionality, usability, and stability across major browsers (Chrome, Safari, Firefox, Edge) and supported devices (desktop tablet mo ...
3 weeks ago
We are seeking a Senior Full Stack Developer to join our Phantom squad. The successful candidate will play a key role in advancing our embedded widget and affiliate platform.You will design mechanisms for privacy-conscious session tracking and fingerprinting, take ownership of th ...
1 month ago
Technical Lockout from GoHighLevel Agency Settings
Only for registered members
I am looking for a developer who can help me resolve a critical technical issue with my GoHighLevel (GHL) agency account. · ...
1 month ago
Manual QA Tester for E-commerce Payment Processing
Only for registered members
Arial is seeking experienced Manual QA Testers for part-time, ad-hoc testing projects focused on payment processing within e-commerce platforms.Assignments may be short-term or longer based on performance and project needs. · You should be comfortable working independently, docum ...
1 month ago
We are seeking a Python developer to integrate the UPS Delivery Photo API without using browser automation.The solution must be fast, reliable, and production-ready. · ...
1 month ago
OpenClaw Deployment for local und Web Automation needed
Only for registered members
Deploy OpenClaw on a Windows environment and configure it to automate local workflows, including document analysis, GUI interactions (mouse/keyboard automation), and browser-based web tasks (just like all the hype around points to). · Candidates must provide verifiable evidence t ...
1 day ago