Junior JavaScript Developer
Sigma Software · Kyiv, Kyiv city, Ukraine
Apply directly on Sigma Software’s careers site — no account needed.
About the role
- Configure and maintain website integrations, including event tracking, SPA fixes, cart tracking, and catalog integrations
- Implement and support Email Service Provider integrations and synchronization workflows
- Execute migration and replatforming activities with comprehensive validation and testing
- Develop custom onsite JavaScript solutions for campaigns and interactive user flows
- Build and support Airflow DAGs for recurring data processing workflows
- Configure dynamic email content and SKU-level recommendation tracking
- Analyze Customer requests and assess technical feasibility of solutions
- Develop integrations with third-party marketing and email platforms
- Investigate and resolve production issues and perform root cause analysis
- Collaborate with account managers, QA engineers, and implementation specialists
- Participate in technical consultations and onboarding alignment meetings
- 2+ years of commercial experience with Vanilla JavaScript (ECMAScript 5+)
- Strong knowledge of HTML and CSS
- Hands-on experience with REST API integrations
- Practical experience with jQuery
- Experience with Chrome DevTools and browser debugging
- Understanding of behavioral event tracking implementation
- Knowledge of Email Service Provider integration workflows
- Ability to develop custom JavaScript logic for onsite experiences
- Strong analytical and problem-solving skills
- Good communication skills with technical and non-technical stakeholders
- Attention to detail and commitment to code quality
- Experience working in cross-functional teams
- Intermediate+ English level
- Readiness to learn new tools and domain-specific technologies
WILL BE A PLUS
- Experience with PHP
- Familiarity with Apache Airflow
- Experience using Postman
- Understanding of Git workflows
- Experience with AdTech or marketing technology platforms
- Exposure to Customer-facing onboarding or integration projects
PERSONAL PROFILE
- Proactive and solution-oriented mindset
- Strong ownership and accountability
- Ability to work independently and collaboratively
- Detail-oriented approach to testing and troubleshooting
- Comfortable working in a fast-paced environment
- Strong communication and stakeholder management skills
Skills
- JavaScript
- HTML
- CSS
- REST
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