高级后端工程师 (核心团队)
Senior Backend Engineer (Core Team)
**职位描述**
我们正在寻找一位**高级后端开发工程师**，他/她喜欢在高度动手的环境中工作，每天都能贴近代码。该职位主要专注于在高负载系统中构建、优化和扩展后端服务，性能和可靠性至关重要。
你将参与平台核心的复杂实时挑战——降低延迟，确保高可用性，并使系统在大规模下更高效。这个职位不是以协调为主的；它适合那些喜欢编写生产代码、解决困难的工程问题，并看到自己工作直接影响的人。
如果你以产品为导向，有责任感，喜欢“先构建，再快速改进”的方式，在每个毫秒都重要的系统中工作——这个职位会让你感到如鱼得水。
**主要职责**
- 作为跨职能团队的一员，负责平台中的核心产品
- 在分布式环境中设计、构建并交付新的后端功能，从头到尾完成
- 每天编写高质量的生产级代码，直接为高负载、可扩展的系统做出贡献
- 负责处理大规模金融交易的服务，重点关注可靠性和准确性
- 主动提出并实现架构、流程和开发实践的改进
- 参与代码和架构评审，以保持高标准的工程实践
- 用务实高效的解决方案解决复杂的业务和技术挑战
- 参与**值班轮班**，确保我们系统的可靠性和可用性
- 积极参与平台上的持续技术转型计划
- 与工程师、产品和其他利益相关者紧密合作，交付被全球数百万用户使用的有效解决方案
**要求**
- 具备扎实的 Node.js/TypeScript 经验是理想的选择，我们也欢迎其他面向对象语言（如 Java、Python、C++、C# 或 Go）的专家
- 对异步编程技术有深入理解
- 在 Kafka 上有丰富的生产经验：能够自信地分析消费者组重新平衡及其对进行中处理的影响，重试和重复传递情况下的偏移量提交策略，以及“精确一次”语义的限制
- 有设计幂等、重试安全的处理程序的经验，用于至少一次的流水线：事务性出站队列、幂等性键和去重
查看英文原文
**About the Role**
We’re looking for a **Senior Backend Developer** who thrives in a deeply hands-on environment and enjoys being close to the code on a daily basis. This role is heavily focused on building, optimising, and scaling backend services in a high-load system where performance and reliability are critical.
You’ll be working on complex, real-time challenges at the core of our platform - improving latency, ensuring high availability, and making systems more efficient at scale. This is not a coordination-heavy role; it’s for someone who enjoys writing production code, solving tough engineering problems, and seeing the direct impact of their work.
If you’re product-driven, take ownership, and prefer a “build first, improve fast” approach while working on systems where every millisecond matters - this role will feel like home.
**Key Responsibilities**
- Work as part of a cross-functional team owning a core product within the platform
- Design, build, and deliver new backend features end-to-end in a distributed environment
- Write high-quality, production-level code daily, contributing directly to a high-load, scalable system
- Take ownership of services handling financial transactions at scale, with a strong focus on reliability and accuracy
- Proactively suggest and implement improvements in architecture, processes, and development practices
- Participate in code and architectural reviews to maintain high engineering standards
- Solve complex business and technical challenges with pragmatic, efficient solutions
- Participating in **on-call rotations** within the squad to ensure the reliability and availability of our systems
- Play an active role in ongoing tech transformation initiatives across the platform
- Collaborate closely with engineers, product, and other stakeholders to deliver impactful solutions used by millions globally
**Requirements**
- Solid experience with Node.js/TypeScript is ideal, but we also welcome experts in other OOP languages such as Java, Python, C++, C#, or Go
- Strong understanding of asynchronous programming techniques
- Deep production experience with Kafka: confident reasoning about consumer-group rebalances and their impact on in-flight processing, offset-commit strategies under retries and duplicate delivery, and the limits of "exactly-once" semantics
- Experience designing idempotent, retry-safe handlers for at-least-once pipelines: transactional outbox, idempotency keys, and deduplication
- Experience building services with gRPC or similar RPC frameworks
- Strong knowledge of relational databases such as MySQL or PostgreSQL, plus production experience with at least one NoSQL technology at scale, such as DynamoDB, MongoDB, or Redis
- Hands-on experience running services on Kubernetes and AWS/GCP: deployment, autoscaling, resource limits, and production debugging
- Production operations experience: on-call ownership of a high-load system, including incident response, impact assessment, root-cause analysis, and post-incident improvements
**Nice to Have**
- Experience with ClickHouse or other columnar/analytical databases
- Experience with multi-region / failover architectures: data replication, regional isolation, and graceful degradation
- Practical use of AI coding agents such as Cursor or Claude Code as part of daily development: effective prompting, reviewing, and validating AI-generated code
- Understanding of application security and industry best practices
- Gambling domain experience
**What We Offer**
- Competitive Salary
- Quarterly Bonuses
- Unlimited Paid Time Off
- Unlimited Paid Sick Leave
- Remote & Flexible Working
- Private Medical Insurance
- Financial Support for Life Events
- Professional Development Budget
- International Exposure
- Regular Company Events
_*Benefits may vary depending on location and contractual agreement_
**Recruitment process**
1. HR interview (30-45mins)
2. Interview with a Hiring Manager (45mins)
3. Technical interview with live coding (90mins)
4. Final Interview with C-level (60 mins)
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