Senior Software Engineer (Infrastructure )

Amplitude is the leading AI analytics platform, helping over 4,700 customers—including Atlassian, Burger King, NBCUniversal, and Square—build better products and digital experiences. With powerful AI Agents embedded across our platform, teams can analyze, test, and optimize user experiences faster than ever. Ranked #1 across multiple categories in G2’s Winter 2026 Report, Amplitude is the best-in-class solution for product, data, and marketing teams. Learn more at amplitude.com.As an organization, we deliver for our customers by living our values. We operate from a place of humility, take ownership of problems and successes, approach challenges with a growth mindset, and put our customers at the center of everything we do.Amplitude’s Commitment to Diversity Equity & Inclusion (DEI): Amplitude believes that diversity enables the creation of better products, improves the ability to solve complex problems, and drives more powerful solutions. We strive to create an environment of inclusion—one focused on psychological safety, empathy, and human connection—that will allow employees of all backgrounds to thrive.About the Role & TeamEvery AI insight, every experiment, every cohort at Amplitude starts with a query. Our in-house OLAP engine, Nova, processes trillions of events in real time — turning raw behavioral data into fast, trustworthy answers that power decisions for thousands of product teams worldwide.We're entering a world where AI agents don't just assist product teams — they ship features, run experiments, and make prioritization calls autonomously. What makes that possible is agents' ability to verify their work against real product data continuously. That makes Nova the critical infrastructure in the loop, and as non-stop agents become the main source of queries, the demand on Nova's throughput, correctness, and operational rigor grows dramatically.We're looking for a Senior Software Engineer who wants to go deep on the engine internals and the infrastructure underneath. You'll own significant components of a modern OLAP system — across query execution, columnar storage and encoding, distributed compute, caching, and cloud infrastructure — and drive meaningful improvements to performance, cost-efficiency, and reliability. You'll grow your technical influence through the quality of your code, your design contributions, and your collaboration with other engineers on a team of ~10.This role is ideal for someone who finds real satisfaction in making a complex distributed system faster, cheaper, and more reliable — and who wants to do that work on a system that directly powers the product experience for thousands of enterprise customers.What You'll DoBuild and improve core query engine componentsContribute across Nova's query execution engine and distributed compute layer: query planning, columnar storage formats, encoding and compression, caching, and cluster-level resource management.Implement new capabilities as Nova expands to support more warehouse-imported data types, such as metrics, profiles, and dimensions.Help ensure Nova's components support high-throughput automated query workloads — as AI agents become a primary source of queries, build for sustained, concurrent, and programmatic query patterns at scale.Improve cost and performanceOwn and execute projects that reduce infrastructure cost — compute, storage, network, and memory — while maintaining or improving latency and throughput.Profile and optimize JVM performance: GC tuning, memory management, concurrency, and data layout decisions.Build guardrails and observability to catch expensive or pathological queries before they impact the system.Contribute to reliability and operational excellenceStrengthen Nova's reliability posture in the components you own: identify failure modes, drive durable fixes, and raise the bar on how we detect and respond to production issues.Participate in on-call rotation to root-cause incidents and turn one-off fixes into lasting improvements.Contribute to capacity planning, safe rollout practices, and the operational tooling that keeps Nova healthy.Grow through technical contributionLead the design and execution of multi-week to multi-month projects within your area of ownership.Contribute to technical direction through design docs, architecture discussions, and code reviews.Pair with and learn from senior and staff engineers on the team; share what you learn with peers.Collaborate with Product, Middleware, Data Pipeline, and other engineering teams to ensure Nova's capabilities translate into customer value.Who You AreYou are a systems-minded engineer who:Gets energy from working inside a complex distributed system — understanding how data flows through it, where the bottlenecks are, and how to make it meaningfully better.Has hands-on experience building or extending distributed data systems — query engines, columnar storage, streaming or batch data processing frameworks, storage engines, or equivalent.Thinks about cost, performance, and reliability as interconnected concerns, not separate workstreams.Communicates clearly about technical tradeoffs and is eager to grow your influence through the quality of your work and ideas.Enjoys learning from teammates — and helping others through pairing, design reviews, or explaining the "why" behind a system's design.QualificationsRequirements3+ years of industry experience in backend or infrastructure engineering, with exposure to distributed data systems.Hands-on experience building or extending distributed data systems — query engines, columnar storage, large-scale data processing frameworks, streaming systems, storage engines, or equivalent.Experience improving cost or performance on cloud infrastructure (compute, storage, network).Strong computer science fundamentals: distributed systems (partitioning, replication, consistency, failover), data structures and algorithms, concurrency and multi-threading, performance optimization.Production experience with modern cloud infrastructure — AWS (S3, DynamoDB, EC2), Kafka, Redis/ElastiCache, Kubernetes, Terraform — or strong equivalents.Proficiency in Java, C++, or Python.Demonstrated ability to own and ship significant pieces of complex systems, and to collaborate effectively with engineers and partner teams.Nice to HaveExperience with specific OLAP or query engine systems: Druid, ClickHouse, Presto/Trino, BigQuery, Snowflake, or similar.JVM expertise — GC tuning, profiling, memory optimization.Experience with columnar data formats and encodings (Arrow, Parquet, ORC, or custom formats).Familiarity with product analytics, experimentation platforms, or event-driven data systems.Contributions to open-source data infrastructure projects or published work in the data systems space.Our values:At Amplitude, our values guide how we show up for one another and for our customers:Humility: We operate from a place of empathy and openness, seeking to understand many points of view.Ownership: We take the initiative to solve problems that drive our shared company success.Growth Mindset: We’re tenacious in the face of challenges and seek feedback in order to grow ourselves and others.Customer Centricity: We put the customer at the center of everything we do and are deeply committed to their success.We care about the well-being of our team: We offer competitive pay and benefits packages that reflect our commitment to the health and well-being of our Ampliteers.Some of our benefit programs include:Excellent ​M​edical, ​D​ental and ​V​ision insurance coverages, with 100% employer-paid premiums for employee Medical, ​Dental,​ ​​​​​​​​Vision on select plans401(k) retirement plan with an employer match of up to 1% of your eligible pay each pay period up to $2,000 annuallyFlexible time off, ​p​aid holidays, and moreGenerous stipends to spend on what matters most to you, whether that’s wellness (monthly), commuter transit/parking (monthly), learning and development (quarterly), new hire home office equipment, and much moreExcellent Parental benefits including​:​ 12 weeks of Paid Parental Leave, Carrot Fertility Benefits/Adoption/Surrogacy support, Back-up Child Care supportMental health and wellness benefits including no cost employee access to Modern Health coaching & therapy sessionsEmployee Stock Purchase Program​ (ESPP)Other fun facts about Amplitude: Our customers love us! They've said we're the #1 product analytics solution for 23 quarters in a row on G2.We care a lot about product innovation. We've made significant investments in talent and infrastructure to build the most powerful AI analytics platform on the market. We invest in our people. We offer mentorship programs, management training, and wellness initiatives. We give back to our communities. We give every Ampliteer a charitable giving grant and paid volunteer time off. We were founded in 2012, went public via a direct listing in September 2021, and are now trading under the ticker $AMPL. We’re a global and fast-growing team! We have employees around the world and offices in San Francisco (HQ), New York, Vancouver, Amsterdam, London, Paris, Singapore, and Tokyo.Our mascot is Data Monster, who loves to chow down on numbers, charts, and graphs. Nom nom.Amplitude provides equal employment opportunities (EEO). All applicants are considered without regards to race, color, religion, national origin, age, sex, marital status, ancestry, physical or mental disability, veteran status, or sexual orientation.Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.This role is eligible for equity, benefits and other forms of compensation.Based on Colorado law, the following details are for individuals who will work for Amplitude in Colorado. Colorado range: $165,000 - $247,000 total target cash (inclusive of bonus or commission)Based on legislation in New York City, the following details are for individuals who will work for Amplitude in New York City. New York City salary range: $183,000 - $276,000 total target cash (inclusive of bonus or commission)Based on legislation in California, the following details are for individuals who will work for Amplitude in San Francisco Bay Area of California. Salary range: $183,000 - $276,000 total target cash (inclusive of bonus or commission)Based on legislation in California, the following details are for individuals who will work for Amplitude in California outside of the San Francisco Bay Area. California salary range: $165,000 - $247,000 total target cash (inclusive of bonus or commission)Based on legislation in Washington state, the following details are for individuals who will work for Amplitude in Washington state. Washington salary range: $165,000 - $247,000 total target cash (inclusive of bonus or commission)Based on legislation in Washington state, the following details are for individuals who will work for Amplitude in Washington only: unlimited PTO, 10 to 13 holidays annually (will vary), medical dental and vision PPO and CDHP plans. Finally, a company sponsored 401(k) retirement plan.#LI-HybridBy applying for this job, you acknowledge that Amplitude processes your personal data in accordance with the Amplitude Applicant Privacy Notice.Staying Safe - Protect Yourself From Recruitment FraudWe are aware of individuals and entities fraudulently representing themselves as Amplitude recruiters and/or hiring managers. Amplitude will never ask for financial information or payment, or for personal information such as bank account number or social security number during the job application or interview process. Any emails from the Amplitude recruiting team will come from an @amplitude.com email address. You can learn more about how to protect yourself from these types of fraud by referring to this article. Please exercise caution and cease communications if something feels suspicious about your interactions.