--- title: 'Agent Harness Engineer (Remote) at Viktor' canonical: 'https://feeny.ai/job/agent-harness-engineer-remote-viktor-europe-4yhked4epxsa' type: 'job' last_seen: '2026-09-07' --- # Agent Harness Engineer (Remote) at Viktor - **Company:** Viktor - **Location:** Europe - **Employment:** full-time - **Work type:** remote - **Posted:** 2026-04-29 - **Last confirmed live:** 2026-09-07 - **Apply:** https://jobs.ashbyhq.com/viktor/c750869a-1859-4339-bfc9-161a9ee2dc9f/application **Skills:** TypeScript, React, Python, AI Engineering, Agentic Coding, Container Orchestration, Cloud Infrastructure, AI Agents, Prompt Engineering, Model Evaluation, Open Source Contributions > Build and scale the agent runtime, integrations, and infrastructure for Viktor, a AI-powered SaaS platform. The role involves full-stack development using TypeScript and Python, working directly with founders to ship reliable features for thousands of users. ## Job description ## THE SHORT VERSION You're the person who makes Viktor do more things, for more customers, more reliably. You've built agents before (runtime, tools, memory, evals) and have opinions about what makes them work. You ship the day you write the code and reach for agentic engineering by default. If you've never built an agent, this isn't the role. ## THE HARD PART We're building a harness ready for AGI. Models keep getting better on their own; the harness decides how much of that intelligence turns into real work. Viktor shouldn't wait to be handed tasks. It should explore what a company is doing and automate it on its own. Getting there is context engineering at the frontier: how the system prompt, skills, memory, and tools interact on diverse, complex problems, and how that interplay holds up across the real work of 56,000+ workspaces. ## WHAT YOU'LL ACTUALLY DO - Build the agent runtime: the loop where it plans, acts, and verifies its own work instead of declaring success it didn't earn. - Engineer the context: shape how the system prompt, skills, memory, and tools combine, and how the agent holds up when problems get diverse and complex. - Make the agent fluent with tools: composition across many integrations, recall, and the skill files that keep the right functions at hand. - Grow what the agent can do: memory it can trust, skills it writes for itself, work it runs on its own. - Make it measurably better: evals, catching regressions, and turning every failure into a fix. - Ship product: features that reach users through Slack and Teams within hours. - Whatever needs building. Small team, large surface. ## WHO YOU ARE - You've personally built or significantly modified an AI agent harness, and can describe the trade-offs you made. - You understand how an agent's system prompt, skills, and tools interact on diverse and complex problems, and you've tuned that interplay yourself, not just read about it. - You've built custom skills, commands, CLIs, or MCP servers to make your own agentic coding faster. - Agentic coding is your daily workflow, and you've stress-tested models and harnesses across the frontier. - Systems thinking. You make hard technical trade-offs and design for how things break at scale. - Speed, with the bar up. You ship today, not Thursday. - Genuine interest in how AI works. You've read the papers and have opinions about evals. - Remote. Work from wherever you're sharpest; we default to async and gather in person a few times a year. ## WHY THIS ROLE IS DIFFERENT - No layers. You work directly with both founders, and decisions get made in the room, not in a Linear ticket. - The agent is the product. Every reliability win shows up in retention the next week. - Frontier work. You're building a harness at the edge of what's currently possible, experimenting with agents that can take on full responsibilities, not just tasks. ## EVEN BETTER IF - Previous AI engineering experience: agents, harnesses, eval infrastructure. - Previous founder or early-stage builder. - Open source contributions to the AI tooling we live in. ## TECH Python. No agent framework, no orchestration library. We build the harness ourselves, from the loop up. ## HOW WE WORK Small team, high trust, low process. Decisions are made by owners, not committees. You will ship your first week. You will talk to users your first day. We don't do alignment meetings or stakeholder syncs. We build things, see if they work, and iterate. ## WHY VIKTOR Singular focus: we're building a harness that can hold an AGI-level model and make it useful for everyone. We're one of the fastest-growing companies in the world. The product works. The market is pulling. This is a rare window: everyone here owns something real. Not a task. A surface of the company that customers depend on. That doesn't last forever. Right now, it's still true. ## COMPENSATION Top-of-the-market salary and the kind of ownership that only exists at this stage. This role is remote-first, with hubs in Munich, New York, and Warsaw. We bring the whole team together in person a few times a year. ## About Viktor ## Company Overview - **One-liner**: Viktor is an AI employee that lives in Slack and Microsoft Teams, connecting to 3,200+ tools to execute real work—reports, dashboards, code, campaigns, and more. - **Entity Type**: Private (Pre-Seed / Seed stage) - **Headquarters**: Wilmington, Delaware, United States - **Founded**: 2026 (as per LinkedIn) - **Founders**: Peter Albert (Co-Founder) ## Core Business - **Primary industry**: AI-powered enterprise productivity / digital labor - **Target customers**: B2B, teams of all sizes (used by 40,000+ teams), from SMB to enterprise - **Mission or purpose statement**: "Give every company an AI employee that connects to their tools and does the work." — from [viktor.com/about](https://viktor.com/about) ## Products & Services - **Viktor (AI Employee)**: A managed AI assistant that operates as a team member in Slack and Microsoft Teams. Connects via OAuth to 3,200+ integrations (Stripe, HubSpot, Linear, Notion, Jira, GitHub, Google Drive, etc.). Executes tasks end-to-end: pulls live data, writes code, builds web apps, generates reports, automates workflows, manages code reviews, and more. Delivers real outputs (PDFs, spreadsheets, deployed apps, code commits) rather than text summaries. Includes scheduling for recurring tasks and proactive automation suggestions. ## Market Standing - **Valuation/Market Cap**: Not disclosed (private) - **Key Metric**: Total Funding of $2.9M (Pre-Seed round led by Nat Friedman and Daniel Gross on 2024-06-13; seed round with one investor on 2025-04-20) — from [LinkedIn](https://www.linkedin.com/company/viktor_com) - **Notable Investors/Partners**: Backed by BEK Ventures, Inovo VC, Accel, KAYA, NFDG, Tenacity Capital, Oxford Seed Fund, Leonis Capital. Angel investors include Koen Bok, Jorn van Dijk, Joel Hellermark, Guillermo Rauch, Alex Bouaziz, Stewart Butterfield, Cal Henderson, Harry Stebbings, Max Mullen, Nico Rosberg, Lenny Rachitsky, Shaan Puri, Charlie Songhurst, Daniel Gross, Nat Friedman, Mati Staniszewski, Bartek Pucek, Shawn Wang (swyx). — from [viktor.com/about](https://viktor.com/about) - **Growth Signals**: 40,000+ teams using the product. LinkedIn reports 9 employees (+37.5% YoY growth). Monthly employee growth of +15.8%. Presence in Poland, Germany, and US. SOC 2 Type 1 compliant (under parent Zeta Labs / Jace AI), SOC 2 Type 2 and ISO 27001 in progress, CASA Tier 3 certified. Listed in Slack App Directory and approved by Microsoft for Teams. ## Competitive Advantages - **Execution vs. chat**: Viktor performs actions (sends emails, updates CRMs, deploys apps) rather than just generating text—differentiator from ChatGPT/typical AI assistants. - **Deep integration breadth**: 3,200+ pre-built integrations with OAuth, covering CRM, analytics, project management, version control, ad platforms, etc. - **Persistent workspace & context**: Maintains team context, learns workflows over time via internal "skills," and operates across all channels/public DMs (with RBAC and private mode on roadmap). - **Security posture**: SOC 2 Type 1, CASA Tier 3, data encrypted in transit/at rest, isolated compute per user, no training on customer data, GDPR and CCPA aligned. - **Short time-to-value**: Setup in minutes, no code or developer required; Viktor handles onboarding himself. ## Strategic Focus - **Privacy & security enhancements**: Actively building Private Mode (isolated per-user conversations), RBAC, per-user OAuth token scoping, data retention controls, sensitive data handling. - **Platform expansion**: Continued integration of new tools and deeper capabilities (app building, code engineering, proactive automation). - **Team scale**: Growing engineering team (currently 9 people, with technical roles in Poland, Germany, US) to accelerate product development. ## Why Work Here - **Culture highlights**: Mission-driven ("bet on the upside, make decisions from hope, not fear"), small focused team (9 people) building an AI employee for "the rest of us." Emphasis on taking care of each other and asking "what if this goes right?" — from [viktor.com/about](https://viktor.com/about) - **Remote/hybrid/office policy**: Not explicitly stated, but team is distributed across Poland, Germany, and US (including Wilmington HQ). Likely remote-friendly given global talent sources (HCLTech, Visa, McKinsey, etc.). - **Notable perks**: $100 in free credits on signup, no credit card required. Product is dogfooded internally. Early-stage equity potential, backed by top-tier investors and angels. Roles listed on [jobs.ashbyhq.com/viktor](https://jobs.ashbyhq.com/viktor) — check for open positions. ## Sources 1. [viktor.com](https://viktor.com/) 2. [viktor.com/about](https://viktor.com/about) 3. [viktor.com/product](https://viktor.com/product) 4. [LinkedIn](https://www.linkedin.com/company/viktor_com) 5. [Jobs page](https://jobs.ashbyhq.com/viktor) ## Other roles at Viktor - [Office Manager](https://feeny.ai/job/office-manager-viktor-warsaw-zfkmhhwre89y) — Warsaw, Poland - [Partnership Operations Manager](https://feeny.ai/job/partnership-operations-manager-viktor-warsaw-1pp5z7m62b8k) — Warsaw, Poland - [GTM Engineer](https://feeny.ai/job/gtm-engineer-viktor-warsaw-we0y5732wk48) — Warsaw, Poland - [Junior Performance & Marketing Designer](https://feeny.ai/job/junior-performance-marketing-designer-viktor-warsaw-053vg6gk0mr0) — Warsaw, Poland - [Senior Performance & Marketing Designer](https://feeny.ai/job/senior-performance-marketing-designer-viktor-warsaw-1papkgm593gk) — Warsaw, Poland - [Growth Analytics Engineer](https://feeny.ai/job/growth-analytics-engineer-viktor-warsaw-09r3se79pmjs) — Warsaw, Poland - [Senior Video Editor (Performance Creative)](https://feeny.ai/job/senior-video-editor-performance-creative-viktor-warsaw-xza91qframcp) — Warsaw, Poland - [Operations Engineer](https://feeny.ai/job/operations-engineer-viktor-warsaw-2ep3hsf8jkyj) — Warsaw, Poland - [Lifecycle Manager](https://feeny.ai/job/lifecycle-manager-viktor-warsaw-5r6n81xtk4zd) — Warsaw, Poland - [Founding Account Executive (US)](https://feeny.ai/job/founding-account-executive-us-viktor-new-york-gtdm4ea66pq1) — New York, NY