Frontend Developer 2 - React

About Behavox

Behavox is a cloud-native AI company providing an integrated controls platform for global banks, asset managers, hedge funds, private equity firms, insurance businesses, and commodity firms. The platform unifies communications and trade surveillance, compliant archiving, policy management as well as front-office analytics on a single, AI-native technology stack, delivered as a globally scalable SaaS-based cloud service.

At Behavox, our engineering culture is built around speed, experimentation, and technical excellence, following agile principles and rapid iteration. We constantly test and adopt the latest cloud technologies and AI tooling, optimising for fast feedback loops and execution. We look for people who can move fast, challenge conventional wisdom, and who want to work at the frontier of modern AI, SaaS platforms, and distributed systems.

Behavox is a high-performance organisation with a strong bias toward delivery, ownership, and responsibility. We commit, and we execute. We are building systems that are complex, mission-critical, and global in scale; systems that many consider too large or too difficult. To do that, we seek the smartest, most technically capable engineers and technologists who take end-to-end responsibility and want to win by building what others cannot.

Founded in 2014 and backed by SoftBank Vision Fund, Behavox is headquartered in London, with offices worldwide, including New York City, Montreal, Seattle, Singapore, and Tokyo.

About the Role

The Software Engineer (React) at BCL2 contributes to the development and maintenance of frontend applications that support core product functionality. The role focuses on implementing well-defined user-facing features within existing React applications, ensuring correctness, usability, and alignment with established frontend patterns.

At this level, the engineer works on clearly scoped tasks under the guidance of more senior engineers and within predefined technical direction. The role is accountable for the quality and reliability of assigned components, timely delivery of frontend changes, and escalating design or implementation issues when necessary.

What You'll Bring

1. React application fundamentals: Knowledge of React, modern JavaScript and TypeScript, and core concepts such as components, hooks, and state handling within an existing codebase.
2. Frontend application structure: Understanding of how frontend modules are organized and how shared components are reused within a React application.
3. Frontend deployment basics: Awareness of how React applications are built and deployed in cloud-hosted environments, including environment configuration concepts.
4. API-based frontend integration: Knowledge of consuming backend APIs from the frontend, including basic data handling, error scenarios, and loading states.
5. Software development lifecycle awareness: Understanding of how frontend changes move through development, testing, and release within an established SDLC.

What You'll Do

1. React feature implementation – Implements and updates React components and features based on provided requirements and technical guidance.
2. State and data flow handling – Uses established React patterns to manage component state and integrate API data within the assigned scope.
3. Frontend testing execution – Writes and maintains unit or basic integration tests for owned components to validate expected behaviour and prevent regressions.
4. API consumption and UI integration – Integrates frontend components with backend APIs using defined contracts and existing data models.
5. Code contribution and issue resolution – Submits code via pull requests, addresses review feedback, and fixes defects within owned frontend components.

What We Offer & Expect

1. The opportunity to work on a global, mission-critical AI platform alongside the best engineers and technologists across multiple geographies.
2. A role with real ownership and impact, building complex systems at scale in an environment that values speed, experimentation, and technical excellence.
3. A highly attractive benefits package, including competitive cash compensation, an equity award aligned with long-term value creation, and comprehensive health insurance for employees and their families.
4. A modern, comfortable office in central Lviv, with an expectation of working from the office three (3) days per week, reflecting our belief in strong in-person collaboration, while remaining flexible to accommodate occasional personal circumstances that may require working from home.
5. A generous time-off policy of 30 days annually, plus public holidays and sick leave, recognising the importance of sustained high performance.

About Our Process

Our selection process is designed to rigorously assess a candidate’s depth of technical knowledge, problem-solving ability, and alignment with Behavox’s mission and core values.

As part of the process, candidates will first participate in a series of interviews focused on evaluating their technical expertise and engineering judgment. Candidates who successfully progress through these interviews will then be invited to complete a live technical exercise with a group of Behavox engineers and engineering managers. The purpose of this live technical assessment is to validate the candidate’s stated technical competencies and assess their ability to solve complex problems with speed, accuracy, and sound engineering judgment. Note that whenever possible, we aim to conduct interviews in person at our offices.

We recognise and respect the time candidates invest in this process. In return, Behavox commits significant time and resources to ensure that those who join us have the capability, judgment, and alignment required to operate at the speed and level of complexity our work demands. We value efficiency and clarity on both sides; if at any point we determine that a candidate is not a fit, we reserve the right to immediately conclude the interview or the technical assessment.

Please note the following:

• A core objective of the process is to objectively assess individual knowledge and competencies. The use of AI tools or external assistance during live interviews or technical exercises is strictly prohibited (unless explicitly instructed otherwise) and will result in immediate disqualification.
• Interviews and technical sessions may be recorded for internal review to support fairness, consistency, and collaborative decision-making within the hiring team.