About the Company
Toggle is a product company building eSIM and VPN solutions for global connectivity across all major platforms, including mobile, desktop, and TV.
Role Overview
We are looking for a Full-stack Developer with a strong backend focus to develop and maintain the company's core products — VPN and eSIM.
Direct Manager: Web Tech Lead
Location: Minsk
Format of work: full-time role with flexible start times and a hybrid setup (4 days in the office, 1 remote)
Responsibilities
Developing VPN and eSIM Product Logic:
•Implement features for issuing, renewing, and activating eSIM profiles, as well as managing access to VPN servers, user sessions, and subscription plans.
Telecom and Loyalty Vendor Integrations:
•Work with the API telecom provider (Telna) to manage data plans and usage, and integrate with Voucherify for promo codes, discounts, and referral programs.
Integrating External Services and APIs:
•Design and implement integrations with infrastructure services and external product services.
Backend Feature Development and Maintenance:
•Develop product logic, handle webhooks from external providers, and maintain existing codebases using NestJS.
Developing Product and User Flows:
•Build end-to-end user journeys across the backend and frontend using React, Next.js, and NestJS — from eSIM plan selection to activation.
Website Development and Enhancement:
•Develop and maintain the company's product website, user account portal, and product conversion funnels.
Incident Investigation and System Monitoring:
•Analyze logs, investigate service activation failures and analytics delivery issues, and configure monitoring and alerting using Datadog.
Architecture and Code Reviews:
•Contribute to architectural design, technical planning, and code reviews.
Testing and Technical Debt:
•Improve test coverage for new code and technical debt by writing E2E and unit tests.
Mentoring:
•Mentor junior developers, share knowledge, and support their onboarding and integration into the team.
What We Expect from You
Hard Skills:
•5+ years of commercial software development experience in Middle+ or Senior roles, with a strong backend focus;
•Expert knowledge of NestJS, TypeScript, and Node.js, along with experience in modern frontend development using React and Next.js;
•Product integration experience: hands-on experience working with external vendors' REST APIs;
•Quality and reliability: practical experience writing E2E, integration, and unit tests, investigating incidents, and working with monitoring systems such as Datadog and Grafana;
•Databases and infrastructure stack: experience with PostgreSQL, Redis, and Docker, including optimizing complex SQL queries and designing high-load architectures.
Soft skills:
•Technical leadership and mentoring: willingness to mentor junior developers, conduct regular code reviews, and foster a strong engineering culture within the team;
•Structured thinking and product mindset: ability to independently break down ambiguous business requirements, propose optimal architectural solutions, and deliver them to production;
•Autonomy and responsibility: ability to take full ownership of a technical domain and be responsible for service stability and performance;
•Excellent communication skills: ability to collaborate effectively with the Product Managers, Marketers, Designers, and adjacent Engineering teams.
Nice to have:
•Architectural patterns: practical experience with CQRS and event-driven architecture;
•Cloud and DevOps: experience with AWS (ECS, RDS, SQS, Lambda, S3, CloudFront) and monitoring and tracing systems such as Datadog;
•Domain expertise: experience in telecom, VPN, eSIM, or working with mobile network operators;
•Loyalty and discount systems: experience integrating with solutions such as Voucherify or designing custom services for promo codes, referral programs, and user retention mechanics;
•Security and high load: understanding of fundamental network security principles, including TLS and cryptography, and practical experience designing fault-tolerant, highly available systems.
Perks
•Official employment and a competitive salary;
•Paid vacation + 5 personal days per year;
•Support for growth: we cover professional courses, books, and conferences;
•Private health insurance (including dental coverage);
•Internal English classes;
•Fast skill growth in a startup-paced environment;
•A culture of openness, respect, and honest feedback;
•Minimal bureaucracy — maximum impact and momentum.
