Lead Back End Developer (Python)

Web Design Sun is a software development company founded in 2012. We have been fully remote since day one, building international products in Web & Cloud Applications, SaaS, CRM/ERP, and E-commerce domains. We collaborate with clients from the US and Europe and consistently rank highly on Clutch, GoodFirms, and Upwork.

We are looking for a Lead Back End Developer with practical engineering judgment and deep backend expertise. This role is not just about coding — it’s about owning architecture, making trade-offs, and leading multiple projects at different maturity stages — from early-stage products and monoliths to distributed microservices-based systems.

Requirements:

• Strong understanding of System Design

• Deep knowledge of Distributed Systems, High-load architectures, and trade-offs in real-world systems

• Solid theoretical foundation: ACID / BASE / Consistency, CAP / PACELC, Algorithms & data structures (complexity awareness)

• Strong Python expertise

• Hands-on experience with Django + DRF, FastAPI + SQLAlchemy, PostgreSQL (RDS), Redis / ElastiCache

• Experience with microservices architecture & patterns and monolithic systems

• English - B1+, Ukrainian/Russian - C1+/Native

• Residence outside Russia, Belarus & Ukraine

Responsibilities:

• Lead backend development across multiple projects

• Design scalable, high-load, distributed systems

• Make and justify architectural decisions and trade-offs

• Work with both monolith and microservices architectures

• Collaborate closely with Product, DevOps, and ML teams

• Take ownership of technical decisions and system quality

• Mentor developers and drive engineering standards

What We Value:

• Engineers who learn beyond their job (courses, self-study)

• Ability to go deep into problems and solve them thoroughly

• High level of proactivity and ownership

We offer:

• Full-time remote position

• Flexible schedule focused on results (with expectation of availability in critical situations)

• Compensation: $3200–4200/month ($20–26/hour)

• Opportunity for additional paid hours

• 20 paid vacation days and 5 paid sick leave days

• Established processes for effective remote work

• Opportunity to influence architecture, processes, and technical decisions

Hiring Process:

• Recruiter screening

• Technical interview (1–2 hours) focused on system design, architecture, real-world engineering decisions, and problem-solving approach

• No separate algorithm or theoretical system design rounds

• No test assignment

• Offer

We are a mature team that values expertise, meaningful communication, and ownership of results. We believe in understanding systems deeply, influencing technical decisions, and continuously improving the architectures and products we build together.

Interested in the role?
Send us your CV — we will review your profile and get back to you within 3–5 business days.