Senior Tools Engineer

Engagement type: Part-time, 10–20 hrs/week — flexible schedule, but high responsiveness required 12:00–18:00 CET

We’re Fundraise Up - a global fundraising platform built to make donating to nonprofits fast, seamless, and accessible to all. Every month, our technology powers tens of millions of dollars in donations across the globe. We focus on innovation that directly impacts results: faster load times, higher conversion rates...

Our platform is trusted by many of the world’s leading nonprofits, including UNICEF, the Alzheimer’s Association, and a wide range of global NGOs. With a 4.9/5 rating across top software review platforms, we’re recognized not just for our impact - but for the quality of the product we deliver.

The best internal tools disappear — they just make everyone else faster. As our Tools Engineer, you'll build and maintain the automations, bots, and AI assistants that quietly remove routine work across the company. This is a generalist, fullstack-with-backend-bias role: you'll touch our project-management system, Slack and Telegram, and a growing set of AI-powered assistants, and you'll be trusted to decide how each problem should be solved. It's distinct from QA automation — your mandate is internal productivity, not test infrastructure.
Own internal automation for our project-management system (TargetProcess) — building custom rules, workflow logic, and integrations with other internal systems.
Design and ship bots for Slack and Telegram that carry out real work — creating tasks, delivering notifications, and answering routine requests.
Automate recurring operational processes — on-call/duty announcements, absence notices, reminders, and similar workflows that would otherwise need manual attention.
Build AI-powered assistants and agents that help employees get fast, accurate answers and complete routine tasks.
Build lightweight internal mini-projects that support company events and culture (for example, a prediction/betting site for New Year).
Document every solution you ship — what it does, how it works, and how to operate or extend it — so tools stay maintainable and don't depend on any one person.
At Fundraise Up, AI is a default tool, not an experimental one. We expect every team member to actively use AI in their day-to-day work, identify where AI can change the shape of problems in their function, and grow their fluency as the tools evolve.

5+ years of professional software development experience, including automation, bot development, and process automation
Fullstack capability with a clear backend bias
Strong knowledge of JavaScript/TypeScript and Node.js
Experience with at least one modern frontend framework (React, Vue, Angular, Svelte, or similar)
Experience with serverless platforms (Cloudflare Workers, Vercel, or equivalent)
Experience with MongoDB, ClickHouse, and/or PostgreSQL — comfortable working across both relational and non-relational databases
Practical experience building bots for Slack and/or Telegram
Hands-on experience automating processes and integrating third-party APIs
Working knowledge of OpenAI/LLM APIs
Able to work autonomously, make decisions, and own outcomes without close supervision
Reliable in honouring commitments and agreements
English proficiency sufficient for daily written and verbal communication
Able to maintain strong availability/responsiveness during 12:00–18:00 CET, even on a flexible part-time schedule
Experience building RAG pipelines or agent-based systems
You'd rather build the tool that removes the work than do the work by hand
You're comfortable owning a wide, shifting surface of systems with no single "home stack"
You take documentation seriously — you write it so someone else could pick up your work tomorrow
You can be handed an ambiguous "this is annoying, fix it" problem and turn it into a shipped automation
You're reliable by default — if you commit to something, it happens
You like the flexibility of part-time contract work but don't use it as an excuse to be hard to reach
You're curious about AI tooling and treat it as a working part of your toolkit, not a side experiment