Jobs in the United States

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Added 10 mins ago
O
Principal Data Center Operator
Oracle
United States
- $91,400 to $187,000 USD / year
Serve as a technical author and process engineer for Data Center Management & Operations, creating and maintaining operational procedures, standards, runbooks, knowledge articles, and…
Added 17 mins ago
Scientist, Optical Systems Engineering
L3Harris Technologies
Fort Wayne, IN · Palm Bay, FL
The Optical Systems Engineer will support the larger program team performing critical functions such as requirements management, interface management, system design, risk and opportunity…
Added 22 mins ago
O
Lead Principal Software Development Engineer
Oracle
Hartford, CT
- $135,200 to $306,400 USD / year
As a Sr. Principal Software Development Engineer in the Oracle Cloud Infrastructure (OCI) Core Platform division, you will play a critical leadership role in the architecture, evolution,…
Added 22 mins ago
Director, AI Engineer (Remote Eligible)
Capital One
Hartford, CT
…mentoring and coaching. You are hands-on when necessary and lead by…
Added 22 mins ago
Principal Software Engineer
Highmark Health
Hartford, CT
We are seeking a visionary Principal Software Engineer responsible for building scalable public-facing software applications across Digital Member Experience channels. As a key player…
Added 22 mins ago
Senior Staff Full-stack Engineer - Global Payment Network (Remote - Eligible)
Capital One
Hartford, CT
As a Senior Staff Engineer at Capital One, you will be part of a community of technical experts working to define the future of banking in the cloud. You will work alongside our talented…
Added 22 mins ago
Senior Software Engineer – Splunk Platform Authorization
Cisco
Hartford, CT
As a Senior Software Engineer on the Splunk Platform Authorization team, you’ll help shape the architecture of systems that enable secure, high-performance authorization across Splunk’s…
Added 22 mins ago
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Principal Software Engineer - (Reston or Cambridge)
Akamai Technologies, Inc.
Hartford, CT
- $169,300 to $304,700 USD / year
As a Principal Software Engineer Lead, you will be responsible for:
Added 22 mins ago
Telecom Engineer IV
Ryder System
Hartford, CT
The Telecom Engineer IV will provide Tier 3 and 4 support, engineering / design, testing and deployment in all areas of responsibility of the Enterprise Voice Team; Voice Facilities, UCaaS…
Added 22 mins ago
Cyber Operate Manager - IAM PBAC Architect/Engineer
Deloitte
Hartford, CT · Stamford, CT
…capabilities, including identity and access management. As a Lead Managed Services Engineer II, you will lead the design, implementation, and evolution of policy-based access control (PBAC)…
Added 22 mins ago
EG
Knowledge Graph Architect
Eliassen Group
Hartford, CT
- $100 to $120 USD / hour
Our client is seeking a Knowledge Graph Architect to lead the architecture and technical strategy for a construction-focused ontology, knowledge graph, and AI knowledge platform. You will…
Added 22 mins ago
EG
Dev Lead
Eliassen Group
Hartford, CT
- $110 to $120 USD / hour
Our client seeks a Dev Lead to own architecture, code quality, and delivery for an Agile squad building AI solutions that enable knowledge discovery and reuse. The role balances hands-on…
Added 31 mins ago
Process Engineer
APPLIED ENGINEERING INC
RIPON, WI
JOB REQUIREMENTS: As a Process Engineer, you will: Engineer and maintain production methods, finishing processes, and equipment Collaborate with engineering, production, quality,…
Added 31 mins ago
Sr Project Engineering Manager
Kerry
Beloit, WI
As a Senior Project Engineer Manager, you’ll own high-impact capital projects from idea to start-up ($50K–$15M) across Kerry’s Taste manufacturing network in North America. This is a…
Added 31 mins ago
Logistics Engineer
CNH INDUSTRIAL AMERICA LLC
STURTEVANT, WI
Added 31 mins ago
EC
Test Engineer
Eaton Corporation
South Milwaukee, WI
- $71,000 to $105,000 USD / year
Lead and coordinate poka-yoke (error-proofing) initiatives to improve product quality and process reliability.
Added 31 mins ago
EC
Digital Factory Engineer
Eaton Corporation
South Milwaukee, WI
- $71,000 to $105,000 USD / year
The Digital Factory Engineer is responsible for developing and executing the plant's digital transformation strategy through the design, deployment, integration, and continuous improvement…
Added 31 mins ago
Sr. Business Analyst Data Engineer
ROCKLINE INDUSTRIES INC
SHEBOYGAN, WI
Added 31 mins ago
Infrastructure Engineer I
EMERGENT HOLDINGS, INC.
NEW BERLIN, WI
Added 32 mins ago
Senior Design Engineer
Eaton Corporation
Waukesha, WI
Eaton’s ES AMER ESS division is currently seeking a Senior Design Engineer.
Added 32 mins ago
Environmental Engineer - Waste, Recycling & Disposal
WEC Energy Group
Milwaukee, WI
The Environmental Engineer is responsible for developing creative and cost effective solutions for a wide range of environmental issues. Lead projects to implement the company's…
Added 33 mins ago
EG
Dev Lead
Eliassen Group
Madison, WI
- $110 to $120 USD / hour
Our client seeks a Dev Lead to own architecture, code quality, and delivery for an Agile squad building AI solutions that enable knowledge discovery and reuse. The role balances hands-on…
Added 33 mins ago
EG
Knowledge Graph Architect
Eliassen Group
Madison, WI
- $100 to $120 USD / hour
Our client is seeking a Knowledge Graph Architect to lead the architecture and technical strategy for a construction-focused ontology, knowledge graph, and AI knowledge platform. You will…
Added 38 mins ago
GC
Environmental Programs Specialist
Gates Co
Denver, CO
- $40,123 USD / year
…transmission solutions. We push the boundaries of material science to engineer solutions that continually exceed customer…
Added 38 mins ago
BA
Remote Sensing Software Engineer, Senior
Booz Allen Hamilton
Aurora, CO
- $86,900 to $198,000 USD / year
As a senior Remote Sensing Software Engineer, you will architect advanced SDA and remote sensing exploitation pipelines, guide technical direction, and lead multi-disciplinary teams…

Microsoft

Principal Software Engineer

WA, United States
Redmond, WA, United States
Redmond, United States

$142,800 to $304,200 USD / year

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Job details

Pay: $142,800 to $304,200 USD / year
Apply by: Apr 28, 2027
Posting language: English
Posted: Oct 30, 2026

Original job description

Overview

We are looking for a Principal Software Engineer who lives and breathes Azure Cosmos DB and knows how it is implemented underneath. Your mission is to make throttling disappear from Microsoft's AI plugin registry with fast, surgical, high-ROI changes. Success is objective: throttling goes away, reliability goes up, and latency goes down, even as scale grows. You will see the results in days, not quarters. We are the Agent Tools and Lifecycle team in Microsoft's Copilot, Agents and Platform (CAP) organization. We build the service behind the AI plugin registry. Admins use it in the Microsoft 365 admin center to govern the plugins (skills, connectors, and agents) that extend Microsoft Copilot, and users discover and use those plugins across products such as Copilot Chat, Cowork, Teams, Word, Excel, and PowerPoint. The registry is a core part of Microsoft's AI architecture, alongside Work IQ, and Copilot experiences across Microsoft depend on it. If you use an AI solution from Microsoft, you likely are working with our service. Come join us at the center of AI transformation at Microsoft! As a hands-on individual contributor, you will be the technical leader for the AI plugin registry's Azure Cosmos DB tier. Our catalog of plugins and agents, and the entitlements and policies that decide who can use them, live in Cosmos DB in data centers worldwide, including sovereign clouds. Traffic keeps growing as the registry expands to experiences such as Copilot Studio, GitHub Copilot, and Microsoft Foundry. Experience working on the internals of Cosmos DB or a comparable database, such as MongoDB, Amazon DynamoDB, or Apache Cassandra, and an understanding of the hardware and network limits that make them throttle, are especially valuable. Our global reach means 24/7 on-call service. This position is based in Redmond, Washington and requires the employee be in the office a minimum of 3 days per week. Microsoft’s mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond.

Responsibilities

Cut request unit (RU) consumption to make throttling go away, fast. Start with the queries that use the most RUs, where we see room for 50–90% reductions: turn cross-partition and fan-out queries into point reads from Cosmos DB or Azure Blob Storage, batched reads, or single-partition queries, and tune indexes.
Pick work by return on investment. Ship several targeted fixes in parallel, each within days, and measure each one in production. Take on a larger redesign only when the data shows smaller fixes cannot get there, and deliver it in steps that each pay off.
Fix hot partitions and size limits at the source: partition keys, document design, indexing policies, and API contracts that give high-traffic calls the keys they need for point reads. When data has to move, migrate it with zero downtime across all environments, including sovereign clouds.
Decide what belongs in Cosmos DB. Move large, binary, unbounded, or rarely queried content to Azure Blob Storage or other storage, weighing latency, availability, and data-residency needs.
Remove redundant and sequential database calls on our busiest paths with batching, request coalescing, and caching, and use retry budgets, load shedding, and graceful degradation so database pressure does not turn into failed requests.
Work with product management and the teams that call us to give each caller a throttling budget. Find callers that request the same unchanged data again and again, help them cache on their side, and lower the budgets of the heaviest callers over time.
Make success measurable: own the telemetry, dashboards, and alerts, RU use per API and per caller, partition skew, availability, and latency. Set targets, show the effect of every change, and spot limits before we hit them.
Raise the bar through AI: write AI skills that review designs and code for Cosmos DB mistakes, find high-RU queries, and show engineers how to fix them, so your expertise scales across the team. Use agentic tools to build and validate fixes faster, following Responsible AI practices. Mentor engineers and represent us with the Azure Cosmos DB product group.
Serve as a Designated Responsible Individual (DRI) in our 24/7 on-call rotation, lead data-tier incident response, and turn what we learn into lasting fixes.

Qualifications

Required Qualifications:

Bachelor's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
OR equivalent experience.

Other Requirements:

Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings:

Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter.

Preferred Qualifications:

Master's Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
OR Bachelor's Degree in Computer Science or related technical field AND 12+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
OR equivalent experience.
4+ years of experience building or operating large-scale distributed databases, such as Azure Cosmos DB, MongoDB, Amazon DynamoDB, or Apache Cassandra, including partitioning, indexing, and query performance.
Experience finding and fixing throttling, hot partitions, or resource-heavy cross-partition queries in production databases.
Experience building or improving the internals of Azure Cosmos DB, or of a comparable distributed database such as MongoDB, Amazon DynamoDB, or Apache Cassandra, in areas such as partitioning, replication, storage engines, query execution, indexing, or rate limiting.
Deep, hands-on Azure Cosmos DB expertise: what drives the RUs each operation uses, physical partitions and splits, hierarchical partition keys, indexing policies, point reads and ReadMany versus cross-partition queries, change feed, consistency levels, multi-region accounts, autoscale, SDK (software development kit) retries, and diagnosing errors.
Track record of making throttling go away quickly, raising availability, and cutting tail latency in production, with targeted, high-ROI changes and before-and-after measurements to prove it.
Deep understanding of why distributed databases throttle, from per-partition throughput and storage limits to hardware, network, and replication overhead, and how to design data models that stay within those limits.
Experience moving large or rarely queried content from a document database to Azure Blob Storage or comparable object storage, and serving it with point reads.
Experience with zero-downtime data migrations and re-partitioning on live production systems.
Experience designing rate limits, quotas, and noisy-neighbor isolation for a multi-tenant platform, and getting partner teams to cache on their side.
Proficiency in C# and .NET, and experience with Azure services such as Azure Functions, Service Bus, Azure Cache for Redis, and API (application programming interface) Management.
Understanding of modern AI technologies, including generative AI and foundation models, and experience writing AI skills and using agentic tools to engineer faster.

#CosmosDB, #MongoDB, #DynamoDB, #Cassandra,# AI,# Artificial Intelligence

Software Engineering IC5 - The typical base pay range for this role across the U.S. is USD $142,800 - $274,800 per year. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $188,000 - $304,200 per year.

Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here: https://careers.microsoft.com/us/en/us-corporate-pay

This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled.

Microsoft is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance with religious accommodations and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.

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