Tech Stack
Go
Job Description, Responsibilities & Requirements
Description language:
About the Position
Senior Go Developer
MWDN is a global IT outstaffing company with 23+ years of experience that connects exceptional tech talent with leading companies across Israel, the USA, Great Britain, and Western Europe. We offer opportunities to work on international products in a stable and professional environment.
Responsibilities
- Design, build, and operate high-throughput, low-latency backend services for ad delivery and analytics
- Own queue-driven workloads (Celery/Redis/DragonflyDB): throughput, retries, back-pressure, idempotency
- Optimize performance end-to-end: CPU/memory, networking, asyncio/concurrency, caching, schema/indexing
- Productionize on AWS (EC2/EKS/Lambda, S3, RDS, ALB/NLB, IAM, elasticsearch)
- Implement robust observability: metrics, tracing, structured logs, SLOs/alerts
- Collaborate with product/analytics to ship features fast; run load tests and capacity plans for peak QPS
- Harden systems for resiliency, cost, and security (least-privilege IAM, secrets, threat modeling)
Requirements
- 5+ years building production backend systems in Python or Go
- Strong AWS experience running scalable, reliable services
- Proven track record optimizing servers for high load/low latency
- Deep hands-on with Celery (or similar queues), task orchestration, and distributed systems fundamentals
- Comfortable with Bash, Linux networking, and performance debugging (perf, eBPF, flame graphs)
- Solid JavaScript/Web fundamentals (HTTP, TLS, CORS, cookies, caching, CDNs)
- SQL/NoSQL experience; data modeling for large-scale reads/writes
- Great communication, team player, fast learner, proactive, and willing to work hard to hit goals
- At least an upper-intermediate level of English
Nice to Have
- RTB/OpenRTB, VAST/VMAP, header bidding, DSP/SSP integrations
- Redis/DragonflyDB tuning, Kafka/Kinesis, ClickHouse/Redshift, Airflow
- Docker/K8s, GitHub Actions, ArgoCD; zero-downtime deploys & canary/blue-green
- Security/compliance in ad systems (PII, consent/TCF)
- Elasticsearch/Kibana experience
We Offer
- People-first management with minimal bureaucracy
- A friendly company culture, proven by employees who choose to return
- Flexible working hours
- 29 days of PTO (18 working days per year, plus all national holidays)
- 9 paid recovery days
- Full financial and legal support for independent contractors
- Free English classes, with native speakers or Ukrainian teachers
- Dedicated HR support
About the Company
MWDN is a global IT outstaffing company with 23+ years of experience that connects exceptional tech talent with leading companies across Israel, the USA, Great Britain, and Western Europe. We offer opportunities to work on international products in a stable and professional environment.
Why does MWDN rock?
Here’s what you can expect when you join MWDN:
- Security: We carefully vet our clients to minimize risks and ensure reliability and timely payments-no fraud or unpleasant surprises.
- Career support: If a project isn’t the right fit, we support you and actively help find new opportunities that match your skills and career goals.
- Legal assistance: We provide guidance on legal matters, including opening and managing your independent contractor or sole proprietorship status, taxes, and related processes.
- Professional development: We offer English courses and professional growth opportunities, as well as team-building events.
Curious to learn more? See what our employees say about working with us on DOU.