Onterris Jobs Hiring Now
Onterris is hiring for 143 open roles on Migrate Mate as of July 16, 2026, concentrated in biotech & life sciences and consulting & professional services, with listed salaries up to about $270,000. Migrate Mate updates Onterris's live openings daily. Onterris is an environmental services and laboratory testing company offering field operations, air emissions monitoring, and hazardous waste analysis across industrial and commercial sites.
Find Onterris JobsOverview
Onterris hiring data on Migrate Mate, as of July 16, 2026.
- Open jobs
- 143
- Top team
- Biotech & Life Sciences
- Seniority
- Mid to senior level
- Work type
- 9% remote or hybrid
- Top location
- Deer Park
- Salary range
- $39,000–$270,000
Listed salaries for Onterris roles on Migrate Mate range from about $39,000 to $270,000 per year across 143 open roles, as of July 16, 2026. Some roles list hourly contract rates.
Open Roles at Onterris
Showing 25 of 143+ Onterris jobs
About Us
At Onterris, we build careers grounded in purpose, responsibility and real-world impact.
“For Planet and Progress” is our north star that guides everything we do. We believe environmental responsibility and human progress are interconnected, interwoven and international. Our scientists, engineers, field teams, consultants and professionals collaborate across disciplines and geographies, guiding industries and governments, ensuring that communities and environments thrive.
When you join us, you’re not just forging a career, you’re joining a movement. A movement for better thinking, smarter solutions and lasting impact.
Together, we will advance our way of life and protect the integrity of our environment every step of the way.
A Day in the Life
CT LIMS is our most significant piece of custom-built enterprise software: a proprietary Laboratory Information Management System (LIMS) that runs production operations across multiple Onterris labs and carries a live, real-time Workday integration. It is a strategic asset despite its legacy codebase . T he team is doing the disciplined work to decide this system’s future: codebase archaeology, durable documentation and architecture readiness ahead of a modernization effort . T he build starts fast. This is the engineer who helps make that build real. You’ll bring modern engineering rigor ( Spec-Driven, Test-First, AI-Augmented ) to a system that has run for years on hard-won domain knowledge and a long-lived legacy codebase. You’ll reverse-engineer what exists, document it so any competent engineer can navigate it and help architect what comes next. One level down from owning the corporate transformation, you are the senior builder who turns specs and architecture decisions into working, tested software. You’ll partner closely with the Staff Engineer, senior Labs developers, the cloud and landing-zone team, the platform architects and lab leadership. This is not pure archaeology and it is not a blank page. It is both at once.
The compensation range for this role is $200,000 - $210,000 USD, commensurate with experience, skills, and geographic location.
To thrive in this role, you'll be comfortable taking ownership of the following responsibilities:
Build through Spec-Driven Development (SDD)
Work “Blueprints Before Bricks”: the design is clarified in a Markdown specification before code is written.
Author specifications and architecture-as-code in Markdown and Mermaid.js, committed to Git alongside the code.
Help establish the templates and review habits that make spec-first development the default.
Deliver test-first development (TDD)
Build the automated test coverage that lets the team move fast with confidence.
Hold the line on coverage standards, particularly for AI-generated code.
Implement architectural guardrails that keep modular boundaries from eroding back into a monolith.
Use AI as a force multiplier
Use Cursor and Claude Code as primary instruments for codebase archaeology, documentation and prototyping.
Contribute to the . cursorrules and prompt libraries that encode our architectural standards.
Apply judgment about when AI accelerates (boilerplate, syntax, archaeology), when to collaborate (domain logic) and when to write manually (data integrity, edge cases).
Reverse-engineer and document the legacy system
Produce module-level documentation: purpose, inputs and outputs, dependencies, data models and known technical debt.
Build data-flow diagrams for the sample lifecycle, Workday integration, billing and invoicing triggers, instrument interfaces and user authentication and authorization.
Contribute to the integration inventory and technical-debt register, triaging components as Fix Now, Doc and Defer or Accept Risk.
Contribute to architecture and cloud readiness
Help shape CT LIMS placement within our Azure landing zone and environment tiers (production, non-production, sandbox).
Contribute to high-availability and hybrid on-prem design, including the instrument-integration constraints that require a local network presence.
Partner with the Staff Engineer, the cloud and landing-zone owner and the platform architects so the modernization aligns with adjacent Onterris platforms rather than duplicating them.
Develop reference implementations and prototypes that de-risk the architecture choice while it is still being made.
Help the team move from “ready to start” to “shipping” without a standing start if the modernization is approved.
What success looks like …
A senior engineer with no prior CT LIMS exposure can navigate the system from your documentation alone, and it holds up under structured review.
Spec-Driven and Test-Driven Development is simply how you work. Specs and tests precede code, and it shows in the quality of what ships.
The legacy components you’ve touched are documented, diagrammed in Mermaid and committed to Git. No tribal knowledge, no binary files.
AI-assisted workflows you’ve helped build are reused across the team, not one-off.
Reference implementations exist for the riskiest parts of the target architectur e and rests on evidence, not opinion.
Y ou’re contributing production modernization code within the first 90 days , not still ramping up.
Your Expertise and Skills
These requirements reflect the knowledge, skills and abilities that help you do your best work here.
7+ years of professional software engineering experience.
Strong cloud-native engineering fundamentals (Azure preferred; AWS or GCP equivalent acceptable).
Demonstrated practice with Spec-Driven and Test-Driven Development, clean architecture and domain-driven design.
Hands-on experience with AI-assisted development tools (Cursor, Claude Code, GitHub Copilot or similar).
Ability to read, reverse-engineer and reason about an unfamiliar or legacy codebase you did not write.
Comfortable producing documentation and diagrams as code (Markdown, Mermaid.js) versioned in Git.
Strong communication . You can explain the “why” to experienced engineers and partner effectively across teams.
You respectfully challenge your peers, and welcome the opportunity when others challenge you.
You are flexible, resilient and curious.
You understand prior art but are compelled to iterate beyond it.
Preferred experience
Experience reverse-engineering or maintaining systems written in Perl or another long-lived legacy language.
Background in LIMS, scientific or other regulated and compliance-driven software (EPA reporting, chain-of-custody, lab accreditation).
Experience with Oracle, and with evaluating database migrations (for example, toward PostgreSQL and or Snowflake ).
Familiarity with containerization ( Podman or Docker) and hybrid on-prem and cloud deployment patterns.
Exposure to enterprise integrations such as Workday.
Familiarity with prompt engineering and AI workflow optimization.
Why this role is compelling
You’re joining at the inflection point of our most important custom system. The archaeology, documentation and reference architecture you produce are what defines subsequent systems . The tools are licensed. The leadership is committed. The standards are set.
This isn’t maintenance and it isn’t a blank page. It’s the rare chance to take deep institutional knowledge locked inside a legacy system and help rebuild it in a modern framework , with specs, tests and modern infrastructure, for every Onterris lab that depends on it. The labs you support protect the air we breathe, the water we drink and the soil that sustains communities. Your code becomes the foundation the rest is built on.
Onterris is a leading global environmental solutions company partnering with organizations to solve complex challenges where environmental pressures, regulatory expectations and operational risks intersect. Guided by our mission to advance the way of life without compromising the integrity of our environment, we believe environmental responsibility and human progress are fundamentally connected. Our scientists, engineers, field teams and consultants apply systems thinking that unites science, data and practical expertise to deliver solutions that strengthen our clients’ resilience, mitigate risk and protect the air, water and soil that sustain communities, while uncovering responsible paths forward for planet and progress. For more information, visit www.onterris.com .
We are an equal opportunity employer and encourage applications from people of all backgrounds. We acknowledge that these experiences and perspectives help to enrich our teams and contribute to our ongoing success. We are committed to providing access and reasonable accommodation in our employment for all applicants. For US residents, click here to learn more.
About Us
At Onterris, we build careers grounded in purpose, responsibility and real-world impact.
“For Planet and Progress” is our north star that guides everything we do. We believe environmental responsibility and human progress are interconnected, interwoven and international. Our scientists, engineers, field teams, consultants and professionals collaborate across disciplines and geographies, guiding industries and governments, ensuring that communities and environments thrive.
When you join us, you’re not just forging a career, you’re joining a movement. A movement for better thinking, smarter solutions and lasting impact.
Together, we will advance our way of life and protect the integrity of our environment every step of the way.
A Day in the Life
CT LIMS is our most significant piece of custom-built enterprise software: a proprietary Laboratory Information Management System (LIMS) that runs production operations across multiple Onterris labs and carries a live, real-time Workday integration. It is a strategic asset despite its legacy codebase . T he team is doing the disciplined work to decide this system’s future: codebase archaeology, durable documentation and architecture readiness ahead of a modernization effort . T he build starts fast. This is the engineer who helps make that build real. You’ll bring modern engineering rigor ( Spec-Driven, Test-First, AI-Augmented ) to a system that has run for years on hard-won domain knowledge and a long-lived legacy codebase. You’ll reverse-engineer what exists, document it so any competent engineer can navigate it and help architect what comes next. One level down from owning the corporate transformation, you are the senior builder who turns specs and architecture decisions into working, tested software. You’ll partner closely with the Staff Engineer, senior Labs developers, the cloud and landing-zone team, the platform architects and lab leadership. This is not pure archaeology and it is not a blank page. It is both at once.
The compensation range for this role is $200,000 - $210,000 USD, commensurate with experience, skills, and geographic location.
To thrive in this role, you'll be comfortable taking ownership of the following responsibilities:
Build through Spec-Driven Development (SDD)
Work “Blueprints Before Bricks”: the design is clarified in a Markdown specification before code is written.
Author specifications and architecture-as-code in Markdown and Mermaid.js, committed to Git alongside the code.
Help establish the templates and review habits that make spec-first development the default.
Deliver test-first development (TDD)
Build the automated test coverage that lets the team move fast with confidence.
Hold the line on coverage standards, particularly for AI-generated code.
Implement architectural guardrails that keep modular boundaries from eroding back into a monolith.
Use AI as a force multiplier
Use Cursor and Claude Code as primary instruments for codebase archaeology, documentation and prototyping.
Contribute to the . cursorrules and prompt libraries that encode our architectural standards.
Apply judgment about when AI accelerates (boilerplate, syntax, archaeology), when to collaborate (domain logic) and when to write manually (data integrity, edge cases).
Reverse-engineer and document the legacy system
Produce module-level documentation: purpose, inputs and outputs, dependencies, data models and known technical debt.
Build data-flow diagrams for the sample lifecycle, Workday integration, billing and invoicing triggers, instrument interfaces and user authentication and authorization.
Contribute to the integration inventory and technical-debt register, triaging components as Fix Now, Doc and Defer or Accept Risk.
Contribute to architecture and cloud readiness
Help shape CT LIMS placement within our Azure landing zone and environment tiers (production, non-production, sandbox).
Contribute to high-availability and hybrid on-prem design, including the instrument-integration constraints that require a local network presence.
Partner with the Staff Engineer, the cloud and landing-zone owner and the platform architects so the modernization aligns with adjacent Onterris platforms rather than duplicating them.
Develop reference implementations and prototypes that de-risk the architecture choice while it is still being made.
Help the team move from “ready to start” to “shipping” without a standing start if the modernization is approved.
What success looks like …
A senior engineer with no prior CT LIMS exposure can navigate the system from your documentation alone, and it holds up under structured review.
Spec-Driven and Test-Driven Development is simply how you work. Specs and tests precede code, and it shows in the quality of what ships.
The legacy components you’ve touched are documented, diagrammed in Mermaid and committed to Git. No tribal knowledge, no binary files.
AI-assisted workflows you’ve helped build are reused across the team, not one-off.
Reference implementations exist for the riskiest parts of the target architectur e and rests on evidence, not opinion.
Y ou’re contributing production modernization code within the first 90 days , not still ramping up.
Your Expertise and Skills
These requirements reflect the knowledge, skills and abilities that help you do your best work here.
7+ years of professional software engineering experience.
Strong cloud-native engineering fundamentals (Azure preferred; AWS or GCP equivalent acceptable).
Demonstrated practice with Spec-Driven and Test-Driven Development, clean architecture and domain-driven design.
Hands-on experience with AI-assisted development tools (Cursor, Claude Code, GitHub Copilot or similar).
Ability to read, reverse-engineer and reason about an unfamiliar or legacy codebase you did not write.
Comfortable producing documentation and diagrams as code (Markdown, Mermaid.js) versioned in Git.
Strong communication . You can explain the “why” to experienced engineers and partner effectively across teams.
You respectfully challenge your peers, and welcome the opportunity when others challenge you.
You are flexible, resilient and curious.
You understand prior art but are compelled to iterate beyond it.
Preferred experience
Experience reverse-engineering or maintaining systems written in Perl or another long-lived legacy language.
Background in LIMS, scientific or other regulated and compliance-driven software (EPA reporting, chain-of-custody, lab accreditation).
Experience with Oracle, and with evaluating database migrations (for example, toward PostgreSQL and or Snowflake ).
Familiarity with containerization ( Podman or Docker) and hybrid on-prem and cloud deployment patterns.
Exposure to enterprise integrations such as Workday.
Familiarity with prompt engineering and AI workflow optimization.
Why this role is compelling
You’re joining at the inflection point of our most important custom system. The archaeology, documentation and reference architecture you produce are what defines subsequent systems . The tools are licensed. The leadership is committed. The standards are set.
This isn’t maintenance and it isn’t a blank page. It’s the rare chance to take deep institutional knowledge locked inside a legacy system and help rebuild it in a modern framework , with specs, tests and modern infrastructure, for every Onterris lab that depends on it. The labs you support protect the air we breathe, the water we drink and the soil that sustains communities. Your code becomes the foundation the rest is built on.
Onterris is a leading global environmental solutions company partnering with organizations to solve complex challenges where environmental pressures, regulatory expectations and operational risks intersect. Guided by our mission to advance the way of life without compromising the integrity of our environment, we believe environmental responsibility and human progress are fundamentally connected. Our scientists, engineers, field teams and consultants apply systems thinking that unites science, data and practical expertise to deliver solutions that strengthen our clients’ resilience, mitigate risk and protect the air, water and soil that sustain communities, while uncovering responsible paths forward for planet and progress. For more information, visit www.onterris.com .
We are an equal opportunity employer and encourage applications from people of all backgrounds. We acknowledge that these experiences and perspectives help to enrich our teams and contribute to our ongoing success. We are committed to providing access and reasonable accommodation in our employment for all applicants. For US residents, click here to learn more.
Job Roles at Onterris
Working at Onterris
Onterris's 143 open roles are mid to senior level, and about 9% are remote or hybrid. The most active teams are biotech & life sciences, consulting & professional services, and compliance & risk. Onterris provides environmental compliance, industrial hygiene, and laboratory services to clients in regulated industries, with work spanning field technician roles, project management, laboratory analysis, and business development. Most Onterris roles are based in Deer Park, with some in Richmond and Denver.
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Browse jobs by roleOnterris Jobs: Frequently Asked Questions
How many jobs is Onterris hiring for right now?
Onterris is hiring for 143 open roles on Migrate Mate as of July 16, 2026, updated daily, concentrated in biotech & life sciences and consulting & professional services. Roles span field operations, laboratory services, project management, and environmental health and safety, serving industrial clients across multiple U.S. locations.
What kinds of roles does Onterris hire for?
The most active teams are biotech & life sciences, consulting & professional services, and compliance & risk. Onterris regularly recruits for environmental field technicians, laboratory technicians and assistants, project managers, OGI and ambient monitoring technicians, environmental health and safety coordinators, and business development managers. Most postings are mid to senior level, covering both technical field work and laboratory or office-based positions.
Are Onterris jobs remote or in-person?
Mostly on-site. About 9% of Onterris's open roles on Migrate Mate are remote or hybrid as of July 16, 2026, with the rest based in Deer Park. Each Onterris listing shows its work location so you can filter before applying.
How do I apply to a job at Onterris?
Find an Onterris role on Migrate Mate, then follow the listing directly through to Onterris's own application portal. Onterris manages its own hiring process, including screening, interviews, and offers. Migrate Mate keeps the listings current so the role you see is open at the time you apply.
What do Onterris jobs pay?
Listed salaries for Onterris roles on Migrate Mate range from about $39,000 to $270,000 per year as of July 16, 2026, with most postings at mid to senior level. Some roles list hourly contract rates. Exact pay is set by Onterris and shown on each listing.
Does Onterris hire entry-level?
Most of Onterris's open roles on Migrate Mate are mid to senior level as of July 16, 2026. Entry-level openings are limited. Check individual Onterris listings for stated experience requirements.
Where is Onterris hiring?
Most Onterris roles are based in Deer Park, with some in Richmond and Denver, and about 9% offer remote or hybrid work as of July 16, 2026. Migrate Mate shows the location on each listing.