Key Facts

Remote From:

Full time

Senior (5-10 years)

English

Hard Skills

Web Performance Optimization TypeScript Web Accessibility JavaScript Libraries Real Time Data State Machines Semantic HTML SharePoint Development Code Analysis Test Execution Engine +15 more

Other Skills

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Collaboration
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Communication
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Leadership
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Curiosity
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Mentorship

Roles & Responsibilities

8+ years of frontend production code experience, including at least 3+ years in a senior role within a scale-up/start-up environment, with deep React and TypeScript expertise.
Strong expertise in state management and component architecture, and solid web fundamentals (HTML semantics, modern CSS, browser rendering, and network layer).
Accessibility practitioner with WCAG 2.2 AA baseline and proven ability to identify WCAG issues during design reviews; proficient in web performance and Core Web Vitals optimization.
Excellent written and spoken English communication skills; mentoring experience and contributions to design systems or large-scale monorepos.

Requirements:

Plan and lead frontend development within your value team, collaborating closely with PMs, designers, and backend engineers.
Translate designs into production user interfaces that are accessible, performant, well-tested, and consistent with the rest of the product.
Build prototypes to put working code in front of customers when validating product ideas.
Own web performance on the surfaces you touch, ensuring excellent Core Web Vitals to boost conversion rates.

Optiveum

Human Resources, Staffing & Recruiting

About Optiveum

Based on our own over 20 years of international experience in the field of IT recruitment and outsourcing, training, labor law, process optimization and consulting , we help companies that plan to develop operations in Poland and Central and Eastern Europe. We support companies (IT and other Tech Industries; including startups) to come and grow in Poland/ Central Europe by building up teams (mainly IT & Sales); go-to-market strategies; sales outsourcing; legal advice. Contact us to learn how we can help you enter and thrive in Central Europe: info (at) optiveum.com

Company type: Startup

Industry: Human Resources, Staffing & Recruiting

Founded: 2018

Company size: 2 - 10

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Job description

Senior Frontend Engineer

Our Client is an ambitious tech company on a mission to create a frictionless shipping experience for SMEs. They wrap real-time pricing, comparison, booking, and tracking into a clean and unified interface, replacing outdated logistics processes with a seamless digital platform.

Role

We are looking for an experienced Senior Frontend Engineer to play a central role in shaping a web app where thousands of customers every week sign up, compare rates, manage integrations, and book shipments. You will work end-to-end—from understanding customer problems to shipping production code—while leading frontend work on a core value team (Customer Experience, Marketplace, or SaaS).

Responsibilities

Plan and lead frontend development within your value team, collaborating closely with PMs, designers, and backend engineers.
Translate designs into production user interfaces that are accessible, performant, well-tested, and consistent with the rest of the product.
Build prototypes to put working code in front of customers when validating product ideas.
Own web performance on the surfaces you touch, ensuring excellent Core Web Vitals to boost conversion rates.
Champion accessibility across the platform (WCAG 2.2 AA is the baseline).
Contribute to architecture decisions that cross the frontend/backend line, including API boundaries and real-time updates.
Maintain shared standards across a React/TypeScript monorepo through code reviews and technical councils.
Mentor junior engineers and contribute to the evolution of the company's design system.

Key competences

8+ years of experience writing production frontend code, with the last 3+ at a senior level in a scale-up/start-up environment.
Deep React and TypeScript experience, with strong opinions on state management and component architecture.
Solid web fundamentals: HTML semantics, modern CSS (Grid, Flexbox, container queries), browser rendering pipelines, and the network layer.
Accessibility expertise as a practitioner skill, capable of spotting WCAG issues during design reviews.
Fluency in web performance, measuring and optimizing Core Web Vitals on real products.
High testing maturity (unit, integration, and end-to-end tests).
Excellent written and spoken English communication skills.
Bonus points for: Experience with large-scale monorepos, background in logistics/marketplaces/B2B SaaS, contributing to design systems, embedding AI-assisted features, or a working knowledge of Go.

Salary and Conditions

Salary up to 7000 Euro per month
100% remote from Poland
B2B contract signed directly with our Client
Start ASAP

Benefits

Work with a modern tech stack (React, TypeScript, AWS, Snowflake, Figma, Claude Code, etc.)
A curious, collaborative, low-ego culture within a Great Place to Work certified environment