Senior Full-Stack Engineer — End-to-End, AI-Driven

Toggl; Warszawa; On-site; PLN 323,000 - 395,000; Full time

Benefits offered by this job

Flexible hours

24 days paid time off

Unlimited sick leave

In-person team meetups (expenses)

Sabbatical 4–6 weeks

Home office budget 2,500€

Co-working space budget 3,000€ per yr

Training/conference budget 4,000€

Job summary

Toggl is hiring a Senior Full Stack Engineer to help build Toggl 2.0, unifying planning, time tracking, and time intelligence. You’ll own end-to-end features across data models, APIs, and interfaces, working with a cross-functional tribe and driving high-impact outcomes.

You will collaborate with product and design, ship fast, and contribute to a data-heavy, customer-focused product. The role supports remote work anywhere with UTC-4 to UTC+4 alignment.

Qualifications

• Significant experience building and shipping production web applications end to end.
• Strong front-end skills with JavaScript/TypeScript/React and modern CSS.
• Backend experience with at least one language, API design, and data modeling.

Responsibilities

• Own major features from concept to production with end-to-end accountability.
• Design data models, APIs, and front-end components for performance and UX.
• Collaborate with product and design; mentor teammates and raise standards.
• Drive quality with good testing, readable code, and robust performance reviews.
• Leverage AI tools to prototype, code, and review for speed and impact.

Skills

JavaScript

TypeScript

React

CSS

Golang

API design

Tools

PostgreSQL

TanStack

CI/CD

Job description

Toggl is hiring a Senior Full Stack Engineer to help build Toggl 2.0, unifying planning, time tracking, and time intelligence. You’ll own end-to-end features across data models, APIs, and interfaces, working with a cross-functional tribe and driving high-impact outcomes.

You will collaborate with product and design, ship fast, and contribute to a data-heavy, customer-focused product. The role supports remote work anywhere with UTC-4 to UTC+4 alignment.