Full-Stack Connectivity Engineer

4 Months ago • 3 Years +

Full Stack Development

Job Description

The Senior Full-Stack Connectivity Engineer will be responsible for analyzing third-party client-side web solutions, designing and maintaining high-throughput Node.js middleware, and developing React 18 single-page apps. This role involves working in an agile environment, managing service dependencies, participating in code reviews, and ensuring full-cycle feature delivery. The engineer will also write and maintain tests and contribute to continuous product-quality improvement. This position requires a deep understanding of JavaScript and modern browser internals, along with strong networking fundamentals and experience with relevant tools and technologies.

Good To Have:

Proficiency with Nginx.
Experience designing or auditing high-load network services.
Familiarity with WebAssembly and static-analysis tooling.
Experience with cloud providers and their load-balancing stacks.
Practical skills with React 18 and state management (Redux-Saga).

Must Have:

3+ years of JavaScript/TypeScript experience on Node.js.
Strong understanding of modern browser internals.
Experience analyzing web front-ends.
Proficiency with proxy/MITM tooling.
Strong grasp of networking fundamentals.
Solid understanding of HTML5/CSS3 and responsive UI patterns.
Familiarity with relevant development tools.
Ability to write clean, testable code.

Perks:

Full-time remote work and flexible working hours.
Comprehensive Mental Health Programme.
Private insurance.
Sports program compensation.
Free online English lessons.
Additional 1 day off per calendar year.
Generous referral program.
Training, internal workshops, and participation in international professional conferences and corporate events.

Add these skills to join the top 1% applicants for this job

internal-audit

github

agile-development

gitlab

react

html

networking

nginx

dns

aws

redux

load-balancing

burp-suite

node.js

webassembly

ci-cd

babel

webpack

docker

websockets

git

typescript

javascript

Overview:

SOFTSWISS continues to expand the team and is looking for a Senior Full-Stack Connectivity Engineer.

We need a true, experienced, and accomplished professional who shares our culture and values.

About Product:

SOFTSWISS Game Aggregator
A fast and cost-effective solution that allows you to integrate and manage casino gaming content easily.
Learn More

Key Responsibilities:

Deep-dive analysis of third-party client-side web solutions — tracing API flows, auth sequences, and performance hotspots.
Design, build, and maintain high-throughput Node.js middleware that routes external web traffic through internal services.
Develop and occasionally extend companion React 18 single-page apps (dashboards, simulators, internal tools).
Work in a fully agile environment (Scrum) alongside senior engineers, product managers, and security specialists.
Manage service dependencies, versioning, and CI/CD pipelines (GitLab CI, Docker, Open API, SSE).
Participate in code reviews, backlog grooming, retrospectives, and continuous product-quality improvement.
Write and maintain unit, component, and e2e tests; ensure full-cycle feature delivery — estimation, decomposition, implementation, release.

Requirements:

3+ years of production experience with JavaScript (ES6+) and TypeScript on Node.js, deep understanding of vanilla JavaScript.
Solid understanding of modern browser internals: page lifecycle, DOM & JS runtime, resource loading (HTTP/2, QUIC, CORS, CSP, Service Workers, WebSockets).
Hands-on experience analysing or reverse-engineering web front-ends: reading minified / obfuscated code, reproducing business logic, inspecting network traces.
Proficiency with proxy / MITM tooling (mitmproxy, Charles, Burp Suite) or programmatic interception libraries (http-proxy, undici hooks).
Strong grasp of networking fundamentals (TCP/IP, TLS, DNS, SOCKS/HTTP proxying) and traffic encryption concepts.
Solid understanding of HTML5 / CSS3 and responsive UI patterns.
Familiarity with webpack, Babel, Docker, GitLab CI, GitLab package registry, semantic versioning, and Open API specs.
Ability to write clean, testable code and corresponding unit tests.
Good UX sensibility and attention to performance and accessibility.
Confident Git workflow, code reviews, and team development habits.
Strong knowledge in website vulnerability analysis.
Fluent Russian speaker; English proficiency at B1+ level.

Nice to Have:

Proficiency with Nginx (reverse-proxy, load balancing, caching).
Experience designing or auditing high-load network services (10k+ RPS).
Familiarity with WebAssembly, static-analysis tooling (webpack-bundle-analyzer, source-map-explorer).
Experience with cloud providers (AWS, GCP, etc) and their load-balancing stacks.
Practical skills with React 18 and state management (Redux-Saga).

What we offer:

Full-time remote work opportunities and flexible working hours
Comprehensive Mental Health Programme
Private insurance
Sports program compensation
Free online English lessons
An additional 1 Day off per calendar year
Generous referral program
Training, internal workshops, and participation in international professional conferences and corporate events.