---
title: 'Senior Compiler Performance Engineer at Azul'
canonical: 'https://feeny.ai/job/senior-compiler-performance-engineer-azul-bengaluru-j44egha8wbpr'
type: 'job'
last_seen: '2026-11-03'
---

# Senior Compiler Performance Engineer at Azul

- **Company:** Azul
- **Location:** Bengaluru, India
- **Employment:** full-time
- **Work type:** remote
- **Posted:** 2026-10-15
- **Last confirmed live:** 2026-11-03
- **Apply:** https://jobs.lever.co/azul/74008e4a-9860-4692-82a5-3e012c397985

## Job description

Falcon is the optimizing just in time (JIT) compiler in Azul Platform Prime. It compiles hot Java bytecode into highly optimized machine code and delivers Java performance that standard JVMs do not reach. Falcon is built on LLVM. We are looking for a Senior Compiler Performance Engineer to own major performance areas of Falcon. This is not a compiler front end role and not a compiler built from scratch: Falcon is mature and runs in production at large enterprises. Your job is to push its generated code further, deciding which optimizations matter, designing them and delivering measurable speedups on real workloads. You will work in a distributed team of compiler experts, with direct influence on what Falcon optimizes next.

## What You Will Do (aka Responsibilities)

- Own performance of Falcon for a set of workloads or an optimization area end to end: analysis, design, implementation, validation
- Design and implement new optimizations and improve existing ones in the middle end and back end: inlining heuristics, loop optimizations, vectorization, escape analysis, speculation and deoptimization, GC barrier and runtime call optimization
- Drive code generation quality on x86_64 and AArch64, including bringing Falcon to new hardware platforms
- Investigate complex performance issues reported by customers and turn findings into compiler improvements
- Review code, mentor engineers on the team and raise the bar for performance methodology
- Contribute to upstream LLVM where it makes sense

## What You'll Bring (Experience, Skills)

- 5+ years of professional experience developing optimizing compilers or JIT compilers
- Strong C++ design and coding skills in large codebases
- Proven track record of delivering compiler optimizations with measurable performance impact
- Deep knowledge of compiler optimization theory and its practical tradeoffs: compile time, code size, correctness
- Strong performance analysis skills: profilers, hardware counters, reading and reasoning about generated assembly

## Nice to Have

- Significant experience with LLVM optimization passes or code generation; LLVM commit access is a plus
- Experience with JIT compilers for managed languages: HotSpot C2, Graal, V8, .NET RyuJIT or similar
- Deep knowledge of x86_64 and/or AArch64 microarchitecture
- Experience with JVM internals: garbage collection, deoptimization, profiling
- PhD in Computer Science or significant research experience in compilers

## About Azul

## Company Overview
- **One-liner**: Azul is the largest company 100% focused on Java and the JVM, providing the world’s most trusted Java platform for cloud and AI-first enterprises.
- **Entity Type**: Private (Venture-backed; latest funding round: Private Equity Round in November 2025)
- **Headquarters**: Sunnyvale, California, United States
- **Founded**: 2002
- **Founders**: Scott Sellers (CEO, President, Co-Founder) and Gil Tene (CTO, Co-Founder)

## Core Business
- **Primary Industries**: Software Development, Enterprise Java Infrastructure, Cloud Computing
- **Target Customers**: B2B – Enterprise, Fortune 100 companies, financial services, retail, telecommunications, manufacturing, and public sector
- **Mission/Purpose**: “To make Azul the heart of every modern cloud enterprise by prioritizing our customers’ success, maintaining our unwavering commitment to innovation and excellence, and advancing Java through community leadership.”

## Products & Services
- **Azul Platform Prime (formerly Zing)**: High-performance, low-latency JVM runtime for mission-critical applications, with advanced garbage collection and diagnostics.
- **Azul Platform Core (formerly Zulu)**: Free, open-source, commercially supported Java build (OpenJDK) for general-purpose workloads.
- **Azul Intelligence Cloud**: Analytics suite that provides insights from production Java runtime data to boost DevOps efficiency.
- **Azul Optimizer Suite**: Tools for tuning and optimizing Java application performance.

## Market Standing
- **Valuation/Market Cap**: Not disclosed (private company)
- **Key Metric**: 
  - Annual Revenue: $55 million (as of most recent data)
  - Total Funding: $177.7 million across 7 rounds (including recent PE round in Nov 2025)
- **Notable Investors**: Series E (2006) with 5 investors; recent Private Equity round (2025) with 1 investor; earlier rounds include Series C ($36M), Series D ($30M), Series E ($42M). Specific names not fully detailed in available data.
- **Growth Signals**: 
  - Headcount: 270 employees (+9.9% YoY, +50 people)
  - LinkedIn followers: 48,997 (+50.9% yearly growth)
  - 36% of Fortune 100, 10 of world’s top 10 banks, and brands like BMW, Mastercard, Salesforce, Workday are customers.
  - Offices in 8 global locations; channel partners in 88 countries.

## Competitive Advantages
- **Largest independent Java engineering team** (second only to Oracle) – 100% focused on Java.
- **Deep expertise in JVM and runtime optimization** – proven by customers like top banks and Fortune 100 companies.
- **Commercial open-source model** – combines enterprise-grade support with community-driven innovation.
- **Proprietary technologies** (e.g., C4 garbage collector, purpose-built for low latency).

## Strategic Focus
- **Cloud and AI-first world**: Positioning Java as the core runtime for modern cloud enterprises.
- **Expanding Intelligence Cloud**: Leveraging production runtime data to improve DevOps and application performance.
- **Global reach**: Growing channel partnerships and presence in 14 countries, with remote/hybrid roles to attract top talent.

## Why Work Here
- **Culture**: “Respect, professionalism, innovation, diversity, inclusion, and maniacal focus on customers.” Rated 4.3/5 on employer reviews (78 reviews).
- **Work Model**: Hybrid and remote options available across many roles (e.g., remote in US, Canada, Europe, etc.).
- **Perks**: Company equity, generous parental leave, dental insurance, Flexible Spending Account (FSA), 401(K). Offices in Sunnyvale, Bengaluru, Dallas, Limassol, Prague, Singapore, Sydney, Yerevan.
- **Engineering Culture**: Focus on Java, JVM, compilers, and runtime performance – appealing to system-level engineers and open-source contributors.

## Sources
1. [Azul About Page](https://www.azul.com/about/)
2. [Azul Careers Page](https://www.azul.com/careers/)
3. [Azul on LinkedIn](https://linkedin.com/company/azul-systems)
4. [Azul on Built In](https://builtin.com/company/azul)
5. [Azul Jobs on Lever](https://jobs.lever.co/azul)

## Other roles at Azul

- [Principal Product Manager, Java Intelligence](https://feeny.ai/job/principal-product-manager-java-intelligence-azul-prague-9kykpf5ssssb) — Prague, Czech Republic
- [Staff Compiler Performance Engineer](https://feeny.ai/job/staff-compiler-performance-engineer-azul-bengaluru-9r6m4zqw3dy6) — Bengaluru, India
- [Compiler Performance Engineer](https://feeny.ai/job/compiler-performance-engineer-azul-bengaluru-j4ha7pa1nvr8) — Bengaluru, India
- [IT Intern, AI and Operations](https://feeny.ai/job/it-intern-ai-and-operations-azul-sunnyvale-mn9fw6kf84tc) — Sunnyvale, CA
- [Compiler Performance Engineer](https://feeny.ai/job/compiler-performance-engineer-azul-prague-fpxeq2qn9v1g) — Prague, Czech Republic
- [Senior Compiler Performance Engineer](https://feeny.ai/job/senior-compiler-performance-engineer-azul-prague-fgm7bthvxxma) — Prague, Czech Republic
- [Senior Software Engineer - Optimizer Hub](https://feeny.ai/job/senior-software-engineer-optimizer-hub-azul-prague-h290md1tak97) — Prague, Czech Republic
- [Global Channel Operations Manager](https://feeny.ai/job/global-channel-operations-manager-azul-united-states-m1yzr649vqrg) — United States
- [Account Executive Sweden](https://feeny.ai/job/account-executive-sweden-azul-sweden-5vr4nmyqdc9b) — Sweden
- [Enterprise Account Executive, (UNCAPPED and Remote)](https://feeny.ai/job/enterprise-account-executive-uncapped-and-remote-azul-san-francisco-bay-area-d6r319e0c9c1) — San Francisco Bay Area, CA