Senior Backend Software Engineer, Agents Job at Cohere

Senior Software Engineer, Backend

Location

United States , Philadelphia

Salary:

Not provided

Robert Half

Expiration Date

Until further notice

Requirements

5+ years of professional software engineering experience
Strong proficiency in Python 3.10+, writing idiomatic, well‑structured code
Deep experience with FastAPI or similar async web frameworks
Solid understanding of relational databases (PostgreSQL preferred), ORM patterns, and schema migration tools
Experience working with large‑scale datasets and maintaining strong data integrity
Working knowledge of concurrency, distributed execution, and async processing models
Hands‑on experience with AWS services, containerization, and CI/CD pipelines
Strong communication skills and experience working in Agile environments

Job Responsibility

Design, build, and maintain backend services and data pipelines that ingest, normalize, and analyze large volumes of cloud and security data
Write production‑quality Python code using established architectural patterns, testing practices, and documentation standards
Design and own medium‑complexity systems, including data models, API contracts, orchestration logic, and integrations
Leverage AI coding agents daily to accelerate development while maintaining code quality and architectural consistency
Craft structured prompts aligned with project conventions and critically evaluate AI‑generated output for correctness, security, and maintainability
Apply judgment to determine when to hand‑code versus delegate tasks to AI agents
Build and maintain services running on AWS, including containerized workloads and supporting cloud services
Implement resilient, long‑running processes with robust retry logic, progress tracking, and failure handling
Contribute to Infrastructure as Code and CI/CD pipelines supporting multi‑environment deployments and security scanning
Conduct thorough code reviews evaluating design intent, correctness, security, and long‑term sustainability

What we offer

Access to top jobs, competitive compensation and benefits, and free online training
Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance
Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan

Senior Software Engineer - Backend

Security represents the most critical priorities for our customers in a world aw...

Location

United States , Redmond

Salary:

119800.00 - 234700.00 USD / Year

Microsoft Corporation

Expiration Date

Until further notice

Requirements

Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
OR equivalent experience.
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.

Job Responsibility

Design, build, and own foundational platform services for data access platform, model execution, machine learning inference, and agent orchestration that are reused across the Microsoft Defender ecosystem
Lead the implementation of medium‑to‑large, scoped features and components, making sound architectural decisions that balance scalability, reliability, security, and long‑term maintainability
Collaborate closely with research, security, and product engineering teams to translate research needs into robust, reusable platform abstractions, rather than one‑off solutions.
Drive end‑to‑end ownership of services, including design, development, testing, deployment, monitoring, and live‑site operations.
Identify and address systemic platform gaps by consolidating shared capabilities and reducing fragmented or bespoke infrastructure across teams.
Contribute to platform standards and best practices for API design, service reliability, observability, and operational excellence
Participate actively in design and code reviews, raising the overall engineering quality and bar for platform development
Mentor and support other engineers through technical guidance, knowledge sharing, and example‑setting, without direct people management responsibility.
Proactively identify opportunities to improve performance, cost efficiency, security, and compliance across the fabric.

Fulltime

Senior Software Engineer, Backend (AI)

We’re looking for a Senior Backend Engineer to join our newly formed AI R&D pod—...

Location

United States , New York City

Salary:

200000.00 - 225000.00 USD / Year

Posh

Expiration Date

Until further notice

Requirements

3–6+ years of backend or full-stack engineering experience, with a proven track record of shipping high-quality, scalable systems in fast-paced environments
Deep expertise in Python and its ecosystem for web services and data processing
Strong experience with Infrastructure as Code (Terraform), a major cloud platform (e.g., GCP, AWS, Azure), and deploying containerized applications
A passion for shaping 0→1 products in a lean, fast-paced R&D environment where you'll help define new playbooks for AI-native experiences

Job Responsibility

Build and Scale AI Services: Design, build, and maintain scalable backend services and APIs for AI-powered features, writing primary production code in Python
Architect Multi-Agent Systems: Move beyond standard RAG to design and implement complex, hierarchical Multi-Agent Systems that can perform sophisticated, multi-step tasks
Implement Evaluation and Fine-Tuning: Build robust frameworks to evaluate the quality of AI systems and manage fine-tuning pipelines to continuously improve model performance
Own Cloud Infrastructure with IaC: Define, deploy, and manage our AI infrastructure using Terraform. You'll be responsible for scaling our container-based serverless solutions while ensuring reliability and performance
Optimize for Efficiency: Deeply analyze the tradeoffs between model performance, latency, and cost to make pragmatic, business-aware technical decisions when using managed AI services
Integrate Across the Stack: Collaborate with our core engineering teams by occasionally working in TypeScript (Node.js) to integrate AI features into our main application

What we offer

Health,Dental and Vision Insurance
Equinox Membership
Unlimited PTO
Team Events, Dinners, & Offsites, Free Event Tickets to Dope Shows
New MacBook
Daily Uber Eats Credit
Relocation bonuses are available for some out-of-state candidates
Offers Equity

Fulltime

Senior Software Engineer, Backend — Frontier Data

The Frontier Data team builds the data and systems that power Scale’s most advan...

Location

United States , San Francisco; New York

Salary:

216200.00 - 270250.00 USD / Year

Scale

Expiration Date

Until further notice

Requirements

5+ years of full-time software engineering experience (post-graduation)
Strong backend engineering fundamentals: distributed systems, API design, data modeling, and production reliability
Strong experience with Docker and containerized development/production environments (building images, debugging, and operating container-based services)
Demonstrated ability to ship quickly in ambiguous, fast-changing environments (high-growth startup experience is a plus)
Experience building systems that scale: queues, async processing, workflow engines, data pipelines, or similar
Comfort working close to AI/ML systems (production experience welcome
curiosity and strong fundamentals also valued)
Proficiency with SQL and modern database-backed application development

Job Responsibility

Own major backend systems for frontier agentic data products, driving projects from early exploration through production deployment
Build scalable services and pipelines that support agent workflows (e.g., coding, tool-use orchestration, GUI/computer-use tasks), with strong reliability and observability
Architect modular, reusable backend systems that adapt to evolving product needs while maintaining scalability, reliability, and clean interfaces
Operate in high-ambiguity environments: break down open-ended problems, propose approaches, and execute with speed and clarity
Partner cross-functionally with product, research/ML, and infrastructure teams to define requirements and ship impactful systems
Improve system performance and cost efficiency through thoughtful architecture, profiling, and iterative optimization
Raise the engineering bar through design reviews, code reviews, and pragmatic best practices

What we offer

Comprehensive health, dental and vision coverage
retirement benefits
a learning and development stipend
generous PTO
equity grant
commuter stipend

Fulltime