Sensor Controls & Algorithms Engineer

Join Us in Revolutionizing Water Chemistry SensingWe've developed breakthrough sensor technology that will transform how water chemistry is monitored across industrial applications. Our innovative sensors deliver real-time, accurate measurements that were previously impossible with traditional methods. The RoleWe are looking for a Sensor Algorithm Engineer to take lead on the full chain from raw sensor signal to reliable, production-quality measurement. This is a core technical role — sensor performance is the product, and you will be driving it forward.Aquatic Labs is building something that hasn't existed before in the market: a solid-state sensor capable of reagent-free measurement of total alkalinity, and that’s just the beginning. The measurement problem is inherently multi-disciplinary — it requires modeling and deep understanding of both chemical and electrical systems. If you're drawn to problems where the algorithm can't be separated from the physics, this is the role.You will work closely with our electrical, mechanical, and firmware engineers, as well as our scientists and lab team, to develop and validate the algorithms and models that underpin sensor accuracy, precision, and robustness across real-world conditions. You will also be responsible for processing and communicating data from internal product testing and customer testing.This is not a research role. We need someone who can implement, iterate, and ship.ResponsibilitiesAlgorithm & Data Science (primary focus)Develop and own algorithms that convert raw sensor signals into accurate, reliable measurementsBuild physics-based sensor measurement models alongside data-driven components, with sound judgment about where each approach belongsDesign and implement signal processing routines on time-series data streamsSignal ProcessingCharacterize sensor response and develop compensation strategies for non-ideal behaviors including noise, drift, and environmental interferenceApply systems and control theory fundamentals to sensor response characterization and filter designCalibrationDesign and maintain calibration models and the experimental workflows that support themQuantify and manage measurement uncertainty across operating conditionsDevelop controlled experiments to isolate specific error sources including DOE/factorial designs and sample size reasoningFirmware / EmbeddedImplement algorithms in C++ for embedded deployment alongside Python-based development and analysis workflowsData Reporting & Cross-Functional CommunicationTranslate algorithm and measurement results into clear, actionable findings for electrical, mechanical, and firmware teammatesProduce external-facing data reports and curated datasets for customers and pilot partnersHard RequirementsStrong applied math, modeling, and signal processing foundation, including:Time-series analysis: filter design, frequency analysis, outlier rejection, and feature detectionApplied statistics: regression, uncertainty quantification, and experimental designCalibration and error modelingNumerical methods: interpolation, optimization, and root-findingExperience building physics-based measurement models as well as data-driven subcomponentsFamiliarity with systems and control theory and its application to sensor characterization and filter designProficiency in Python (NumPy, SciPy, Pandas) and C++ (Eigen, STL) for scientific computing and algorithm developmentHands-on experience working with hardware-generated instrument data through to reliable measurement outputFamiliarity with electrical engineering fundamentals (transistors, ADCs, DACs)Ability to design controlled experiments that validate models and generate calibration dataStrong cross-functional communication skills; experience producing both internal technical analyses and external-facing reportsStartup-compatible: you take ownership, identify problems independently, and don't wait for someone else to solve a problem or write a spec.Nice To HavesExperience with measurement traceability and metrologyFamiliarity with analog electronics and mixed-signal circuitsExperience with chemical or electrochemical measurement systemsExperience with production data infrastructure: warehousing, pipeline orchestration, or time-series storage at sensor-scale write volumesWhy Join Aquatic LabsYou will own a core technical function at a company building revolutionary sensing technology where sensor performance is the productThe problems are real, the team is small, and your fingerprints will be on everythingCompetitive compensation including equityAquatic Labs is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.