Build scalable APIs and microservices that power millions of users daily
Backend Developers design, build, and maintain server-side applications, APIs, and databases that power web and mobile platforms. Working in teams alongside frontend engineers and DevOps specialists, they report to Tech Leads or Engineering Managers. Daily responsibilities include writing clean code in Node.js, Python, Go, or Java; designing database schemas; implementing caching strategies; and debugging production issues. Backend roles exist across fintech (Stripe, Wise), logistics (Deliveroo), and SaaS companies, requiring expertise in REST APIs, microservices, Docker, and cloud platforms.
Senior Backend Engineer with 6+ years building scalable, high-throughput APIs and microservices for fintech and SaaS platforms. Expert in Node.js, Go, and Python with proven track record reducing latency by 40% and handling 500M+ daily requests. Passionate about system design, database optimization, and mentoring junior engineers.
Recruiters prioritize demonstrable system design expertise, proven ability to scale services, and deep knowledge of at least one backend language (Node.js, Go, Python, or Java). They look for quantified achievements: 'reduced latency by 40%' resonates more than 'optimized performance.' Experience with cloud platforms (AWS, GCP, Azure), databases (SQL and NoSQL), and containerization (Docker, Kubernetes) is essential. Strong problem-solving skills, evidenced by tackling production incidents or architectural decisions, separate senior candidates. Contributions to open-source projects or technical blog posts demonstrate thought leadership and communication ability—critical for senior roles mentoring others.
Technical proficiency matters most: list specific languages (Node.js, Go, Python, Java), databases (PostgreSQL, MongoDB, Redis), and tools (Docker, Kubernetes, Git). Include cloud platforms (AWS, GCP, Azure) and relevant services (RDS, DynamoDB, Lambda). Architectural knowledge is crucial: REST APIs, gRPC, microservices, event-driven systems, and caching strategies. Include DevOps-adjacent skills if applicable: CI/CD pipelines, monitoring tools (DataDog, Prometheus), and IaC (Terraform). Soft skills matter too: communication, code review discipline, and mentorship experience. Avoid generic terms like 'problem-solving'—instead, highlight specific challenges you've solved: 'optimized N+1 query patterns' or 'designed Kafka event pipelines for 500K msg/sec.'
Don't claim expertise in 15 languages—depth beats breadth. Avoid vague bullet points like 'maintained backend services' without quantification. Never list outdated technologies unless they're genuinely relevant. Don't omit the 'why' behind decisions: explain not just what you built, but why that approach was chosen and what metrics improved. Skipping achievements is fatal: if you reduced latency or scaled systems, quantify it. Don't understate operational excellence: production support, incident response, and monitoring are backend fundamentals. Lastly, avoid technical jargon without context—remember recruiters may not be engineers. Use analogies or brief explanations for complex concepts to ensure clarity across non-technical stakeholders.
Use reverse chronological order, starting with your most recent and senior role. Each bullet should be 12–20 words, starting with strong action verbs (Architected, Optimized, Designed, Implemented). Always include quantified results: percentages, latency figures (ms), throughput (requests/sec), or financial impact ($K saved). Organize bullets logically: impactful achievements first, technical details second. For dates, use 'Mar 2022 – Present' format. Keep the CV to one page for junior/mid-level roles, two maximum for seniors. Use consistent formatting: same date style, bullet spacing, and font. Add a GitHub link if you have notable open-source contributions. Use clean typography: 10–11pt font, 1-inch margins, plenty of whitespace. Let your metrics tell the story—they're more persuasive than lengthy descriptions.
Figures in USD. Ranges reflect mid-level experience (3–7 years). Senior roles and major metro areas typically sit at the top of these bands.
Top companies hiring Backend Developers include Stripe (fintech, heavy focus on payment systems and API design), Revolut (banking, requires expertise in real-time transactions and microservices), Wise (payments, emphasizes database optimization and concurrency), Booking.com (hospitality, values scalability and system design), and Uber (logistics, requires knowledge of distributed systems). Tailor your CV by matching their tech stack: highlight Node.js experience for Revolut, Go for Stripe's infrastructure teams, and Python/Java for larger enterprises like Booking. Research their engineering blog, mention specific challenges they face (e.g., Wise's cross-border speed), and quantify your experience with their scale (millions of requests/day).
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