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January
2.5
Lead Backend Platform Engineer
Menlo Park, CA
$180K - $300K (Employer provided)
Help define and enforce strong engineering standards around service design, testing, deployment, monitoring, and operational ownership.…
30d+
back end engineer jobs in Menlo Park, CA Menlo Park, CA jobs January jobs in Menlo Park, CA
January salaries back end engineer salaries in Menlo Park, CA
Employee reviews at January January interview experience Working at January
The Hershey Company
3.6
Lead Controls Systems Specialist - OSI PI
Lancaster, PA
$64K - $90K (Glassdoor est.)
Working knowledge of control system components and architecture which includes PLCs, Kepware OPC, Networking (TCP/IP), HMI/SCADA systems as well as other state……
30d+
The Hartford
3.8
Senior Security Engineer
Hartford, CT
$128K - $193K (Employer provided)
Provide technical leadership to an offshore engineering team, including design guidance, code reviews, mentoring, and delivery oversight.…
2d
Vanguard
3.7
Backend API Engineer Technical Lead II
Malvern, PA
$88K - $122K (Glassdoor est.)
Provides expert level IT technical lead services, including the direction, evaluation, selection, configuration, implementation, and integration of new and……
30d+
Hudson Manpower
Backend Modernization Engineer III / US Citizens and GC Candidates Only
Cincinnati, OH
$50.00 - $55.00 Per Hour (Employer provided)
Easy Apply
Communication skills that enable effective collaboration with technical and non-technical stakeholders. NET and Java Spring Boot expertise while actively……
30d+
RTX
3.8
Senior Mission Planning Engineer/ Senior Systems Engineer (Onsite)
Tucson, AZ
$87K - $165K (Employer provided)
Supporting this mission are teams driving flexible integrated solutions crossing all product areas (sensors, effectors, command and control, logistics and……
17d
SCOR
3.7
Director, Sr Software Engineer - Velogica
Charlotte, NC
$120K - $160K (Employer provided)
A bachelor’s degree in information services management, computer science, applied mathematics, or related field, or equivalent practical experience.…
30d+
General Dynamics Information Technology
3.9
Senior Full Stack Engineer
Arlington, VA
$147K - $199K (Employer provided)
Best Places to Work
The Senior Full Stack Engineer will lead backend design and development, build front-end interfaces, craft DevSecOps workflows, leverage AWS services, and……
18d
Raymond James Financial
4.1
Senior Backend Engineer (Oracle-PL/SQL/Java)
Saint Petersburg, FL
$123K - $174K (Glassdoor est.)
Best Places to Work
The Senior Engineer will analyze business requirements, design technical solutions, and support application development centered around Oracle Database and PL/……
30d+
Leidos
3.8
Software Engineer
Virginia
$131K - $237K (Employer provided)
Best Places to Work
Collaborate with cross-functional teams and stakeholders to translate requirements into technical solutions, clearly communicating complex concepts to both……
29d
dv01
4.7
Sr. Backend Engineer
New York, NY
$140K - $160K (Employer provided)
This includes working closely with the product team to understand the customer story, design team to understand the motivation behind the UI/UX, the data……
18d
Walt Disney Company
3.8
Lead Software Engineer
Bay Lake, Orange, FL
$148K - $180K (Employer provided)
Must have 3+ years of repeated cross-team technical leadership, end-to-end ownership of multi-service initiatives, and driving architecture decisions that……
30d+
Autonodyne
2.7
Unity Full Stack Developer
Boston, MA
$90K - $130K (Employer provided)
Easy Apply
Bachelor's degree in computer science/ programming or related field. They have experience working on fast paced software development teams as an individual……
30d+
Yoh
3.7
Senior Java Engineer with Low Latency in Java Multithreading, Socket Programming, AI tools (Claude Code, Codex, Gemini CLI) - Hybrid Onsite
Needham, MA
$70.00 - $85.00 Per Hour (Employer provided)
Easy Apply
Bachelor's degree in computer science or related field. We are looking for engineers who can effectively leverage AI tools (e.g., Claude Code, GitHub Copilot)……
30d+
PNC Financial Services Group
3.2
Software Engineer Principal Sr. - Javascript, GO, CI/CD, DevSecOps
Birmingham, AL
$112K - $250K (Employer provided)
Ability to troubleshoot pipeline integrations, service endpoints, API calls, failed jobs, permissions issues, and application-level defects.…
15d
Disney Entertainment and ESPN Product & Technology
Principal Media Streaming Engineer
United States
$156K - $229K (Employer provided)
Experience writing technical documentation for consumption by both technical and non-technical people. Familiarity with front-end technologies for building……
30d+
Premier Trailer Manufacturing
3.6
Director of Product Development & Engineering
Visalia, CA
$150K - $200K (Employer provided)
Easy Apply
Oversee engineering design, CAD development, prototype fabrication, testing, validation, and manufacturing implementation.…
3d
Walt Disney Company
3.8
Sr Software Engineer
Bay Lake, Orange, FL
$135K - $165K (Employer provided)
Independently acts as technical liaison and communicates effectively with technical partners, business partners, and front line operators.…
30d+
General Dynamics Information Technology
3.9
Senior Principal AI Full Stack Software Engineer
Fort Bragg, NC
$146K - $198K (Employer provided)
Best Places to Work
Familiarity with component-based UI development, state management, and reusable front-end design patterns. Lead the technical design and implementation of AI-……
9d
System One
3.8
Lead AI Software Engineer
McLean, VA
$114K - $157K (Glassdoor est.)
Easy Apply
Experience mentoring technical teams and driving the adoption of secure, AI-enabled, cloud-native engineering practices. Employment Type: Contract-to-Hire.…
24h
Tuvoli
Principal Engineer
Nashua, NH
$150K - $200K (Employer provided)
Provide technical leadership and mentorship through influence, guiding engineers and elevating team standards. Strong system design and problem-solving skills.…
30d+
Fannie Mae
3.5
Advisor Software Engineer (AI/ML)
Reston, VA
$155K - $209K (Employer provided)
Ability to produce high-quality technical documentation, including architecture papers, solution design documents, technical white papers, AI/ML implementation……
16d
Walt Disney Company
3.8
Lead Full Stack Software Engineer - AI Assisted Engineering Practices
Celebration, FL
$148K - $180K (Employer provided)
Set front-end architecture direction for guest-facing web experiences (rendering strategy, component architecture, data/state patterns) and ensure consistency……
30d+
Leidos
3.8
Senior DevOps Engineer
Bethesda, MD
$131K - $237K (Employer provided)
Best Places to Work
BS in Engineering, Computer Science, Systems Engineering, or related field or equivalent experience with 12+ years in software development, system engineering……
25d
Emergent Staffing
5.0
Software Engineer Team Lead
Atlanta, GA
$120K - $140K (Employer provided)
Easy Apply
Lead and support a growing team of software engineers through mentorship, coaching, and technical guidance. Design and develop backend systems and cloud-based……
18d
Vanguard
3.7
Deputy Chief Engineer - React Native
Charlotte, NC
$95K - $136K (Glassdoor est.)
Provides expert level IT technical lead services, including the direction, evaluation, selection, configuration, implementation, and integration of new and……
15d
Brooksource
3.9
Technical Lead (Data Engineering)
Charlotte, NC
$80.00 Per Hour (Employer provided)
Easy Apply
In this role, you will *partner closely with existing technical leadership* within the Data & Analytics organization, including other technical leads,……
30d+
Cox Automotive
3.7
Lead Software Engineer
Atlanta, GA
$123K - $204K (Employer provided)
Best Places to Work
The Lead Software Engineer is a hands-on technical leader responsible for driving the full-stack design, development, and delivery of software solutions across……
3d
Hirschi Companies
4.2
Lead Engineer
North Las Vegas, NV
$130K - $180K (Employer provided)
Easy Apply
The Lead Engineer manages the day-to-day technical relationship with the contracted development team, sets technical and process standards, ships production……
22d
Freddie Mac
3.4
Software Engineer Senior
McLean, VA
$129K - $193K (Employer provided)
This role is for an experienced engineer who can independently drive solution design, influence engineering standards, and partner across Product, Architecture,……
30d+

January

2.5

Lead Backend Platform Engineer

Menlo Park, CA

$180K - $300K (Employer provided)

Is your resume a good match?

Use AI to find out how well the skills on your resume fit this job description.

About January AI

At January AI, we believe every day is January 1st — a fresh start for better health.

Founded in 2017 and headquartered in Menlo Park, California, January AI is the first AI-powered precision health company focused on improving metabolic health and advancing personalized nutrition. Co-founded by tech executive Noosheen Hashemi and Stanford geneticist Dr. Michael Snyder, we bring together machine learning, multi-omic science, and real-world health data to empower individuals to take control of their health.

Our flagship January app uses data from continuous glucose monitors, wearables, and food logs to predict users’ blood sugar responses to more than 54 million foods, delivering real-time, personalized recommendations for nutrition, activity, and lifestyle.

In 2025, we introduced Mirror, which integrates genomics, wearable data, and at-home diagnostics to offer clinical-grade guidance—supporting both individuals and enterprise health partners with tailored insights and actions.

Recognized as one of Fast Company’s Most Innovative Companies (2025, Wellness), a CES Innovation Honoree (2025), and one of Inc.’s Best in Business (2024), January AI is backed by visionary investors including Marc Benioff, Jerry Yang, and Steve Chen. Our work has been featured in The Wall Street Journal, The New York Times, STAT, Financial Times, and TechCrunch.

About the role

We are hiring a Lead Backend Platform Engineer to own and strengthen a broad backend surface area spanning app APIs, partner APIs, EHR integrations, AI services, cloud infrastructure, and observability.

What you’ll do

Own backend services that power our app and partner-facing products
Lead design, implementation, and maintenance of APIs, microservices, EHR integration layer and service-to-service workflows
Manage the AI infrastructure that powers our health intelligence and evaluation harness
Improve production reliability, observability, alerting, incident response, and debugging workflows
Drive architectural improvements that simplify service boundaries and reduce operational fragility
Improve the quality, consistency, and maintainability of backend systems across the stack
Partner closely with product, frontend, and AI to deliver robust systems
Help define and enforce strong engineering standards around service design, testing, deployment, monitoring, and operational ownership
Step into ambiguous, cross-functional problems and drive them to resolution with minimal oversight

What success looks like

Within 90 days, a new partner can integrate against our API in roughly a week with you as their primary technical contact.
When a user-facing failure happens, you can localize the cause across ingestion, AI generation, and infrastructure and fix it without escalating.
Prompt and pipeline changes ship behind a regression evaluation that catches quality drops before production.
Auth, ingestion, and report incidents trend down because you've added the missing tracing, limits, and tests.
The team has a stronger technical leader who communicates clearly, takes ownership, and raises the bar.

What we’re looking for

7+ years of backend engineering experience in production environments
Strong experience building and operating backend systems at scale
Deep expertise in backend architecture, distributed systems, and microservices
Excellent written and verbal communication
Strong ownership mentality and the ability to proactively identify and solve problems
Comfort operating as a lead and wearing multiple hats across software, infrastructure, reliability, and cross-functional execution
Strong debugging and root-cause analysis skills
A track record of improving engineering quality, not just delivering features
A high level of care, accountability, and pride in your work

Technical qualifications

Strong backend development experience in languages relevant to our stack
Experience designing and operating microservices, REST APIs, and event-driven systems. Strong database skills, ideally with PostgreSQL
Experience with cloud infrastructure and infrastructure-as-code, especially Terraform
Experience with CI/CD, deployment pipelines, and production operations
Strong experience with monitoring, observability, tracing, logging, and alerting
Experience handling incidents, production debugging, and postmortem-driven improvement
Hands-on experience iterating prompts, retrieval, and evaluation in production — not just calling a model API
Day-to-day fluency with AI coding tools (Claude Code, Cursor, or equivalent) as part of your normal development loop

Nice to have

Experience in healthcare or health-tech. Familiarity with standards and healthcare data models such as FHIR and LOINC
Experience supporting systems used by both internal product teams and external customers or partners

This person will report directly to the CTO and work very closely with our AI Lead. For the right person, this is an opportunity to have outsized impact: solving hard systems problems, improving the technical foundation of the company, and helping shape how January builds production-grade AI products.

$180,000 - $300,000 a year

Why Join January AI

Real ownership across the stack: You'll own the systems that connect a person's clinical and lifestyle data to AI-generated insights — used by both our consumer app and the enterprise partners we serve.
A team that can back the work: You'll work alongside Stanford-trained scientists, AI researchers, and operators who've shipped at scale, reporting to the CTO with the AI Lead as a close partner.
Research-credentialed product: Our clinical reasoning model has published benchmarks that hold up against the largest general-purpose LLMs. We treat scientific credibility as a product requirement, not marketing.

Our HQ office is in sunny and beautiful downtown Menlo Park, CA, within walking distance to Caltrain and local cafes and restaurants.

Our team collaborates in real-time during standard working hours Pacific Time.

Benefits and Perks of working Full-time at January include: Competitive salary and equity packages; 401k with corporate matching; Health, dental, vision, life and AD&D insurance; Commuter benefits.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

See company reviews

Base pay range

The minimum salary is $180K and the max salary is $300K.

$180K – $300K/yr (Employer provided)

$240K

/yr Median

Menlo Park, CA

If an employer includes a salary or salary range on their job, we display it as "Employer Provided". If a job has no salary data, Glassdoor displays a "Glassdoor Estimate" if available. To learn more about "Glassdoor Estimates," see our FAQ page.

Working here doesn’t have to be a secret

2.5

Recommend to a friend
Approve of CEO
CEO: 0 Ratings

January

2.5

Lead Backend Platform Engineer

Menlo Park, CA

$180K - $300K (Employer provided)

January

2.5

Lead Backend Platform Engineer

Menlo Park, CA

$180K - $300K (Employer provided)

Is your resume a good match?

Use AI to find out how well the skills on your resume fit this job description.

About January AI

At January AI, we believe every day is January 1st — a fresh start for better health.

About the role

What you’ll do

Own backend services that power our app and partner-facing products
Lead design, implementation, and maintenance of APIs, microservices, EHR integration layer and service-to-service workflows
Manage the AI infrastructure that powers our health intelligence and evaluation harness
Improve production reliability, observability, alerting, incident response, and debugging workflows
Drive architectural improvements that simplify service boundaries and reduce operational fragility
Improve the quality, consistency, and maintainability of backend systems across the stack
Partner closely with product, frontend, and AI to deliver robust systems
Help define and enforce strong engineering standards around service design, testing, deployment, monitoring, and operational ownership
Step into ambiguous, cross-functional problems and drive them to resolution with minimal oversight

What success looks like

Within 90 days, a new partner can integrate against our API in roughly a week with you as their primary technical contact.
When a user-facing failure happens, you can localize the cause across ingestion, AI generation, and infrastructure and fix it without escalating.
Prompt and pipeline changes ship behind a regression evaluation that catches quality drops before production.
Auth, ingestion, and report incidents trend down because you've added the missing tracing, limits, and tests.
The team has a stronger technical leader who communicates clearly, takes ownership, and raises the bar.

What we’re looking for

7+ years of backend engineering experience in production environments
Strong experience building and operating backend systems at scale
Deep expertise in backend architecture, distributed systems, and microservices
Excellent written and verbal communication
Strong ownership mentality and the ability to proactively identify and solve problems
Comfort operating as a lead and wearing multiple hats across software, infrastructure, reliability, and cross-functional execution
Strong debugging and root-cause analysis skills
A track record of improving engineering quality, not just delivering features
A high level of care, accountability, and pride in your work

Technical qualifications

Strong backend development experience in languages relevant to our stack
Experience designing and operating microservices, REST APIs, and event-driven systems. Strong database skills, ideally with PostgreSQL
Experience with cloud infrastructure and infrastructure-as-code, especially Terraform
Experience with CI/CD, deployment pipelines, and production operations
Strong experience with monitoring, observability, tracing, logging, and alerting
Experience handling incidents, production debugging, and postmortem-driven improvement
Hands-on experience iterating prompts, retrieval, and evaluation in production — not just calling a model API
Day-to-day fluency with AI coding tools (Claude Code, Cursor, or equivalent) as part of your normal development loop

Nice to have

Experience in healthcare or health-tech. Familiarity with standards and healthcare data models such as FHIR and LOINC
Experience supporting systems used by both internal product teams and external customers or partners

$180,000 - $300,000 a year

Why Join January AI

Real ownership across the stack: You'll own the systems that connect a person's clinical and lifestyle data to AI-generated insights — used by both our consumer app and the enterprise partners we serve.
A team that can back the work: You'll work alongside Stanford-trained scientists, AI researchers, and operators who've shipped at scale, reporting to the CTO with the AI Lead as a close partner.
Research-credentialed product: Our clinical reasoning model has published benchmarks that hold up against the largest general-purpose LLMs. We treat scientific credibility as a product requirement, not marketing.

Our HQ office is in sunny and beautiful downtown Menlo Park, CA, within walking distance to Caltrain and local cafes and restaurants.

Our team collaborates in real-time during standard working hours Pacific Time.

Benefits and Perks of working Full-time at January include: Competitive salary and equity packages; 401k with corporate matching; Health, dental, vision, life and AD&D insurance; Commuter benefits.

See company reviews

Base pay range

The minimum salary is $180K and the max salary is $300K.

$180K – $300K/yr (Employer provided)

$240K

/yr Median

Menlo Park, CA

Working here doesn’t have to be a secret

2.5

Recommend to a friend
Approve of CEO
CEO: 0 Ratings

Are you open to new opportunities?

6,511 Lead Engineer - Backend jobs in United States

About January AI

About the role

What you’ll do

What success looks like

What we’re looking for

Technical qualifications

Nice to have

Why Join January AI

Base pay range

Working here doesn’t have to be a secret

About January AI

About the role

What you’ll do

What success looks like

What we’re looking for

Technical qualifications

Nice to have

Why Join January AI

Base pay range

Working here doesn’t have to be a secret