Senior Backend Developer (.NET)

Описание вакансии

Публикатор: Eli Blokh

Обсуждение: @TelRan

#вакансия

Привет! Ищем senior backend, олим-френдли.

Senior Backend Developer (.NET)

Experience: 5+ Years | Location: On-site – Tel Aviv (Midtown) Company: B2C Gaming Startup (Sweepstakes)

About Us

We're a B2C gaming startup building a high-performance sweepstakes platform already serving real users. Our system handles real-time transactions at scale in a regulated space — reliability, speed, and security aren't aspirational, they're table stakes.

We operate lean — there's no dedicated DevOps team — so backend engineers own their services from architecture to production. Engineers here don't just implement — they design, decide, and ship.

The Role

We're looking for a Senior Backend Developer with 5+ years of experience who wants real ownership over systems that matter. This isn't a ticket-taking role — you'll be driving system design, making tech stack decisions, and shaping the architecture of a live, real-money gaming platform.

You'll design and build backend services using .NET 10, own features end-to-end from architecture through production, and work directly with product, business, and compliance stakeholders. You'll be expected to identify the right tool for the job — whether that's choosing between Postgres and MongoDB for a given flow, deciding when WebSockets beat HTTP, or deciding what doesn't need to be built at all.

This is a fully on-site role in Tel Aviv (Midtown).

Responsibilities

• Lead system design and architecture for backend services using .NET 10
• Choose the right tech stack for each problem and justify those decisions
• Architect scalable, secure, and high-performance APIs and real-time systems
• Design data models and flows across PostgreSQL and MongoDB based on access patterns, consistency needs, and scale
• Build real-time gameplay and transaction features using WebSockets and event-driven patterns
• Apply backend best practices: clean architecture, SOLID, KISS, testing, logging, and monitoring — pragmatically, not dogmatically
• Own features end-to-end — from architecture and implementation through deployment, monitoring, and iteration in production
• Manage CI/CD pipelines and AWS infrastructure for the services you own
• Collaborate directly with product, business, and compliance stakeholders to shape what gets built
• Use AI coding agents (Claude Code, Codex, Cursor, etc.) to raise both velocity and quality

Requirements

• 5+ years of backend development experience, with strong fluency in modern .NET (C# / .NET 10+)
• Demonstrated experience owning system design and architecture decisions on production systems
• Strong experience with both PostgreSQL and MongoDB — including schema design, indexing, and choosing between them based on workload
• Experience building real-time systems with WebSockets
• Track record of taking complex features end-to-end: design, implementation, deployment, and production ownership
• Ability to choose and justify a tech stack rather than just consume one
• Strong analytical and problem-solving skills, with a bias toward simple, correct solutions
• Comfortable with full ownership in a lean startup environment — no hand-holding, no hiding
• Experience with or strong willingness to adopt AI coding tools
• Independent, proactive, opinionated, and solution-oriented

Nice to Have

• Experience in gaming, sweepstakes, fintech, or high-scale B2C platforms
• Experience with AWS (ECS, RDS, etc.)
• Experience with message queues and event-driven / asynchronous architectures
• Experience designing for regulated environments (compliance, auditability, PII handling)

What We Offer

• Meaningful ownership over core systems serving real users
• A small, senior team with minimal bureaucracy — decisions get made in hours, not weeks
• Fast-paced environment in one of gaming's fastest-growing verticals

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